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2. L'évolution des pratiques agricoles au lac Alaotra à Madagascar. Une approche par les temporalités

Author

Penot, E., Dabat, MH., Rakotoarimanana, A., and Grandjean, P.

Subjects
Agricultural development, agricultural policies, rice, cultivation, agricultural planning, Madagascar, Biotechnology, TP248.13-248.65, Environmental sciences, GE1-350
Abstract

The evolution of cropping systems in the Lake Alaotra region of Madagascar. An approach based on temporalities. Lake Alaotra, the rice barn of Madagascar, is a region with high immigration and long term official development assistance. The history of agricultural development in the region displays various temporalities. In examining this issue, the authors propose an analytical framework that puts into perspective firstly, the instability of agricultural policies, secondly, the limited timeframe given to research and development projects supporting technical change, and thirdly, the generally irregular progression of the adoption of technical proposals, of innovation and ultimately of the evolution of agricultural practices. In spite of disconnected temporalities, a reserve of knowledge and various skills has being built up, which provides farmers with the ability to adapt to various types of risk.

Published
2014

6. Isotope effects on L-H threshold and confinement in tokamak plasmas

Author

Maggi, C. F., Weisen, H., Hillesheim, J. C., Chankin, A., Delabie, E., Horvath, L., Auriemma, F., Carvalho, I. S., Corrigan, G., Flanagan, J., Garzotti, L., Keeling, D., King, D., Lerche, E., Lorenzini, R., Maslov, M., Menmuir, S., Saarelma, S., Sips, A. C. C., Solano, E. R., Belonohy, E., Casson, F. J., Challis, C., Giroud, C., Parail, V., Silva, C., Valisa, M., Lambertz, N., Lane, H. T., Lang, C., Lanthaler, P. T., Lapins, S., Lasa, J., Last, A., Łaszyå„ska, J. R., Lawless, E., Lawson, R., Lawson, A., Lazaros, K. D., Lazzaro, A., Leddy, E., Lee, J., Lefebvre, S., Leggate, X., Lehmann, H. J., Lehnen, J., Leichtle, M., Leichuer, D., Leipold, P., Lengar, F., Lennholm, I., Lerche, M., Lescinskis, E., Lesnoj, A., Letellier, S., Leyland, E., Leysen, M., Li, W., Liang, L., Likonen, Y., Linke, J., Linsmeier, J., Lipschultz, C. h., Liu, B., Liu, G., Schiavo, Lo, Loarer, V. P., Loarte, T., Lobel, A., Lomanowski, R. C., Lomas, B., Lã¶nnroth, P. J., Lã³pez, J., J. M., Lã³pez, Razola, Lorenzini, J., Losada, R., Lovell, U., Loving, J. J., Lowry, A. B., Luce, C., Lucock, T., Lukin, R. M. A., Luna, A., Lungaroni, C., Lungu, M., Lungu, C. P., Lunniss, M., Lupelli, A., Lyssoivan, I., Macdonald, A., Macheta, N., Maczewa, P., Magesh, K., Maget, B., Maggi, P., Maier, C., Mailloux, H., Makkonen, J., Makwana, T., Malaquias, R., Malizia, A., Manas, A., Manning, P., Manso, A., Mantica, M. E., Mantsinen, P., Manzanares, M., Maquet, A., Marandet, P. h., Marcenko, Y., Marchetto, N., Marchuk, C., Marinelli, O., Marinucci, M., Markoviä, M., Marocco, T., Marot, D., Marren, L., Marshal, C. A., Martin, R., Martin, A., Martìn De Aguilera, Martã¬nez, A., F. J., Martã¬n, Solã¬s, Martynova, J. R., Maruyama, Y., Masiello, S., Maslov, A., Matejcik, M., Mattei, S., Matthews, M., Maviglia, G. F., Mayer, F., Mayoral, M., M. L., May, Smith, Mazon, T., Mazzotta, D., Mcadams, C., Mccarthy, R., Mcclements, P. J., Mccormack, K. G., Mccullen, O., Mcdonald, P. A., Mcintosh, D., Mckean, S., Mckehon, R., Meadows, J., Meakins, R. C., Medina, A., Medland, F., Medley, M., Meigh, S., Meigs, S., Meisl, A. G., Meitner, G., Meneses, S., Menmuir, L., Mergia, S., Merrigan, K., Mertens, I. R., Meshchaninov, P. h., Messiaen, S., Meyer, A., Mianowski, H., Michling, S., Middleton, Gear, Miettunen, D., Militello, J., Militello, Asp, Miloshevsky, E., Mink, G., Minucci, F., Miyoshi, S., Mlynã¡å™, Y., Molina, J., Monakhov, D., Moneti, I., Mooney, M., Moradi, R., Mordijck, S., Moreira, S., Moreno, L., Moro, R., Morris, F., Morris, A. W., Moser, J., Mosher, L., Moulton, S., Murari, D., Muraro, A., Murphy, A., Asakura, S., N. N., Na, Nabais, Y. S., Naish, F., Nakano, R., Nardon, T., Naulin, E., Nave, V., Nedzelski, M. F. F., Nemtsev, I., Nespoli, G., Neto, F., Neu, A., Neverov, R., Newman, V. S., Nicholls, M., Nicolas, K. J., Nielsen, T., Nielsen, A. H., Nilsson, P., Nishijima, E., Noble, D., Nocente, C., Nodwell, M., Nordlund, D., Nordman, K., Nouailletas, H., Nunes, R., Oberkofler, I., Odupitan, M., Ogawa, T., O'Gorman, M. T., Okabayashi, T., Olney, M., Omolayo, R., O'Mullane, O., Ongena, M., Orsitto, J., Orszagh, F., Oswuigwe, J., Otin, B. I., Owen, R., Paccagnella, A., Pace, R., Pacella, N., Packer, D., Page, L. W., Pajuste, A., Palazzo, E., Pamela, S., Panja, S., Papp, S., Paprok, P., Parail, R., Park, V., Parra, Diaz, Parsons, F., Pasqualotto, M., Patel, R., Pathak, A., Paton, S., Patten, D., Pau, H., Pawelec, A., Paz, Soldan, Peackoc, C., Pearson, A., Pehkonen, I. J., Peluso, S. P., Penot, E., Pereira, C., Pereira, A., Pereira, Puglia, P. P., Perez Von Thun, Peruzzo, C., Peschanyi, S., Peterka, S., Petersson, M., Petravich, P., Petre, G., Petrella, A., Petråilka, N., Peysson, V., Pfefferlã©, Y., Philipps, D., Pillon, V., Pintsuk, M., Piovesan, G., Pires Dos Reis, Piron, Lidia, Pironti, A., Pisano, F., Pitts, R., Pizzo, F., Plyusnin, V., Pomaro, N., Pompilian, O. G., Pool, P. J., Popovichev, S., Porfiri, M. T., Porosnicu, C., Porton, M., Possnert, G., Potzel, S., Powell, T., Pozzi, J., Prajapati, V., Prakash, R., Prestopino, G., Price, D., Price, M., Price, R., Prior, P., Proudfoot, R., Pucella, G., Puglia, P., Puiatti, M. E., Pulley, D., Purahoo, K., Pã¼tterich, T. h., Rachlew, E., Rack, M., Ragona, R., Rainford, M. S. J., Rakha, A., Ramogida, G., Ranjan, S., Rapson, C. J., Rasmussen, J. J., Rathod, K., Rattã¡, G., Ratynskaia, S., Ravera, G., Rayner, C., Rebai, M., Reece, D., Reed, A., Rã©fy, D., Regan, B., Regaã±a, J., Reich, M., Reid, N., Reimold, F., Reinhart, M., Reinke, M., Reiser, D., Rendell, D., Reux, C., Reyes, Cortes, Reynolds, S. D. A., Riccardo, S., Richardson, V., Riddle, N., Rigamonti, K., Rimini, D., Risner, F. G., Riva, J., Roach, M., Robins, C., Robinson, R. J., Robinson, S. A., Robson, T., Roccella, D. W., Rodionov, R., Rodrigues, R., Rodriguez, P., Rohde, J., Romanelli, V., Romanelli, F., Romanelli, M., Romazanov, S., Rowe, J., Rubel, S., Rubinacci, M., Rubino, G., Ruchko, G., Ruiz, L., Ruset, M., Rzadkiewicz, C., Saarelma, J., Sabot, S., Safi, R., Sagar, E., Saibene, P., Saint, Laurent, Salewski, F., Salmi, M., Salmon, A., Salzedas, R., Samaddar, F., Samm, D., Sandiford, U., Santa, D., Santala, P., Santos, M. I. K., Santucci, B., Sartori, A., Sartori, F., Sauter, R., Scannell, O., Schlummer, R., Schmid, T., Schmidt, K., Schmuck, V., Schneider, S., Schã¶pf, M., Schwã¶rer, K., Scott, D., Sergienko, S. D., Sertoli, G., Shabbir, M., Sharapov, A., Shaw, S. E., Shaw, A., Sheikh, R., Shepherd, H., Shevelev, A., Shumack, A., Sias, A., Sibbald, G., Sieglin, M., Silburn, B., Silva, S., Silva, A., Simmons, C., Simpson, P. A., Simpson, Hutchinson, Sinha, J., Sipilã¤, A., Sips, S. K., Sirã©n, A. C. C., Sirinelli, P., Sjã¶strand, A., Skiba, H., Skilton, M., Slabkowska, R., Slade, K., Smith, B., Smith, N., Smith, P. G., Smith, R., Smithies, T. J., Snoj, M., Soare, L., Solano, S., Somers, E. R., Sommariva, A., Sonato, C., Piergiorgio, Sopplesa, Sousa, A., Sozzi, J., Spagnolo, C., Silvia, Spelzini, Spineanu, T., Stables, F., Stamatelatos, G., Stamp, I., Staniec, M. F., Stankå«nas, P., Stan, Sion, Stead, C., Stefanikova, M. J., Stepanov, E., Stephen, I., Stephen, A. V., Stevens, M., Stevens, A., Strachan, B. D., Strand, J., Strauss, P., Strã¶m, H. R., Stubbs, P., Studholme, G., Subba, W., Summers, F., Svensson, H. P., Åšwiderski, J., Szabolics, Å. ., Szawlowski, T., Szepesi, M., Suzuki, G., Tã¡l, T. T., Tala, B., Talbot, T., Talebzadeh, A. R., Taliercio, S., Cesare, Tamain, Tame, P., Tang, C., Tardocchi, W., Taroni, M., Taylor, L., Taylor, D., Tegnered, K. A., Telesca, D., Teplova, G., Terranova, N., David, Testa, Tholerus, D., Thomas, E., Thomas, J., Thomas, J. D., Thompson, P., Thompson, A., Thompson, C. A., Thorne, V. K., Thornton, L., Thrysã¸e, A., Tigwell, A. S., Tipton, P. A., Tiseanu, N., Tojo, I., Tokitani, H., Tolias, M., Tomeå¡, P., Tonner, M., Towndrow, P., Trimble, M., Tripsky, P., Tsalas, M., Tsavalas, M., Tskhakaya, Jun, Turner, D., Turner, I., Turnyanskiy, M. M., Tvalashvili, M., Tyrrell, G., Uccello, S. G. J., Abidin, Ul, Uljanovs, Z., Ulyatt, J., Urano, D., Uytdenhouwen, H., Vadgama, I., Valcarcel, A. P., Valentinuzzi, D., Vallejos, Olivares, Valovic, P., Van De Mortel, Van, Eester, Van, Renterghem, Van, Rooij, Varje, G. J., Varoutis, J., Vartanian, S., Vasava, S., Vasilopoulou, K., Vega, T., Verdoolaege, J., Verhoeven, G., Verona, R., Verona, Rinati, Veshchev, G., Vianello, E., Vicente, N., Viezzer, J., Villari, E., Villone, S., Vincenzi, F., Pietro, Vinyar, Viola, I., Vitins, B., Vizvary, A., Vlad, Z., Voitsekhovitch, M., Vondrã¡äek, I., Vora, P., Vu, N., Pires De Sa, Wakeling, W. W., Waldon, B., Walkden, C. W. F., Walker, N., Walker, M., Walsh, R., Wang, M., Wang, E., Warder, N., Warren, S., Waterhouse, R. J., Watkins, J., Watts, N. W., Wauters, C., Weckmann, T., Weiland, A., Weisen, J., Weiszflog, H., Wellstood, M., West, C., Wheatley, A. T., Whetham, M. R., Whitehead, S., Whitehead, A. M., Widdowson, B. D., Wiesen, A. M., Wilkinson, S., Williams, J., Wilson, M., Wilson, A. R., Wilson, D. J., Wilson, H. R., Wischmeier, J., Withenshaw, M., Withycombe, G., Witts, A., Wood, D. M., Wood, D., Woodley, R., Wray, C., Wright, S., Wright, J., J. C., Wu, Wukitch, J., Wynn, S., Xu, A., Yadikin, T., Yanling, D., Yao, W., Yavorskij, L., Yoo, V., Young, M. G., Young, C., Young, D., Young, I. D., Zacks, R., Zagorski, J., Zaitsev, R., Zanino, F. S., Zarins, R., Zastrow, A., Zerbini, K. D., Zhang, M., Zhou, W., Zilli, Y., Zoita, E., Zoletnik, V., Zychor, S., and JET Contributors

Subjects
Tokamak, Materials science, Isotope, Turbulence, Magnetic confinement fusion, L-H threshold, Plasma, Condensed Matter Physics, 01 natural sciences, confinement, isotope effects, tokamaks, 010305 fluids & plasmas, law.invention, Ion, Nuclear Energy and Engineering, Physics::Plasma Physics, law, Physics::Space Physics, 0103 physical sciences, Kinetic isotope effect, Physics::Atomic Physics, Atomic physics, 010306 general physics
Abstract

The dependence of plasma transport and confinement on the main hydrogenic ion isotope mass is of fundamental importance for understanding turbulent transport and, therefore, for accurate extrapolations of confinement from present tokamak experiments, which typically use a single hydrogen isotope, to burning plasmas such as ITER, which will operate in deuterium-tritium mixtures. Knowledge of the dependence of plasma properties and edge transport barrier formation on main ion species is critical in view of the initial, low-activation phase of ITER operations in hydrogen or helium and of its implications on the subsequent operation in deuterium-tritium. The favourable scaling of global energy confinement time with isotope mass, which has been observed in many tokamak experiments, remains largely unexplained theoretically. Moreover, the mass scaling observed in experiments varies depending on the plasma edge conditions. In preparation for upcoming deuterium-tritium experiments in the JET tokamak with the ITER-like Be/W Wall (JET-ILW), a thorough experimental investigation of isotope effects in hydrogen, deuterium and tritium plasmas is being carried out, in order to provide stringent tests of plasma energy, particle and momentum transport models. Recent hydrogen and deuterium isotope experiments in JET-ILW on L-H power threshold, L-mode and H-mode confinement are reviewed and discussed in the context of past and more recent isotope experiments in tokamak plasmas, highlighting common elements as well as contrasting observations that have been reported. The experimental findings are discussed in the context of fundamental aspects of plasma transport models.

Published
2018

7. Erosion and deposition in the JET divertor during the second ITER-like wall campaign

Author

Mayer, M., Krat, S., Baron-Wiechec, A., Gasparyan, Y., Heinola, K., Koivuranta, S., Likonen, J., Ruset, C., De Saint-Aubin, G., Litaudon, Widdowson A., Abduallev, X., Abhangi, S., Abreu, M., Afzal, P., Aggarwal, M., Ahlgren, K. M., Ahn, T., J. H., Aho, Mantila, Aiba, L., Airila, N., Albanese, M., Aldred, R., Alegre, V., Alessi, D., Aleynikov, E., Alfier, P., Alberto, Alkseev, Allinson, A., Alper, M., Alves, B., Ambrosino, E., Ambrosino, G., Amicucci, R., Amosov, L., Andersson, Sundã©n, Angelone, E., Anghel, M., Angioni, M., Appel, C., Appelbee, L., Arena, C., Ariola, P., Arnichand, M., Arshad, H., Ash, S., Ashikawa, A., Aslanyan, N., Asunta, V., Auriemma, O., Fulvio, Austin, Avotina, Y., Axton, L., Ayres, M. D., Bacharis, C., Baciero, M., Baiã¡o, A., Bailey, D., Baker, S., Balboa, A., Balden, I., Balshaw, M., Bament, N., Banks, R., Baranov, J. W., Barnard, Y. F., Barnes, M. A., Barnes, D., Barnsley, M., Baron, Wiechec, Barrera, Orte, Baruzzo, L., Matteo, Basiuk, Bassan, V., Bastow, M., Batista, R., Batistoni, A., Baughan, P., Bauvir, R., Baylor, B., Bazylev, L., Beal, B., Beaumont, J., Beckers, P. S., Beckett, M., Becoulet, B., Bekris, A., Beldishevski, N., Bell, M., Belli, K., Bellinger, F., Belonohy, M., Ben, Ayed, Benterman, N., Bergsã¥ker, N. A., Bernardo, H., Bernert, J., Berry, M., Bertalot, M., Besliu, L., Beurskens, C., Bieg, M., Bielecki, B., Biewer, J., Bigi, T., Bã¬lkovã¡, M., Binda, P., Bisoffi, F., Bizarro, A., Bjã¶rkas, J. P. S., Blackburn, C., Blackman, J., Blackman, K., Blanchard, T. R., Blatchford, P., Bobkov, P., Boboc, V., Bodnã¡r, A., Bogar, G., Bolshakova, O., Bolzonella, I., Tommaso, Bonanomi, Bonelli, N., Boom, F., Booth, J., Borba, J., Borodin, D., Borodkina, D., Botrugno, I., Bottereau, A., Boulting, C., Bourdelle, P., Bowden, C., Bower, M., Bowman, C., Boyce, C., Boyd, T., Boyer, C., Bradshaw, H. J., Braic, J. M. A., Bravanec, V., Breizman, R., Bremond, B., Brennan, S., Breton, P. D., Brett, S., Brezinsek, A., Bright, S., Brix, M. D. J., Broeckx, M., Brombin, W., Matteo, Broså‚awski, Brown, A., Brown, D. P. D., Bruno, M., Bucalossi, E., Buch, J., Buchanan, J., Buckley, J., Budny, M. A., Bufferand, R., Bulman, H., Bulmer, M., Bunting, N., Buratti, P., Burckhart, P., Buscarino, A., Busse, A., Butler, A., Bykov, N. K., Byrne, I., Cahyna, J., Calabrã², P., Calvo, G., Camenen, I., Camp, Y., Campling, P., Cane, D. C., Cannas, J., Capel, B., Card, A. J., Cardinali, P. J., Carman, A., Carr, P., Carralero, M., Carraro, D., Carvalho, L., Carvalho, B. B., Carvalho, I., Casson, P., Castaldo, F. J., Catarino, C., Caumont, N., Causa, J., Cavazzana, F., Cave, Ayland, Cavinato, K., Cecconello, M., Ceccuzzi, M., Cecil, S., Cenedese, E., Angelo, Cesario, Challis, R., Chandler, C. D., Chandra, M., Chang, D., Chankin, C. S., Chapman, A., Chapman, I. T., Chernyshova, S. C., Chitarin, M., Giuseppe, Ciraolo, Ciric, G., Citrin, D., Clairet, J., Clark, F., Clark, E., Clarkson, M., Clatworthy, R., Clements, D., Cleverly, C., Coad, M., Coates, J. P., Cobalt, P. A., Coccorese, A., Cocilovo, V., Coda, V., Coelho, S., Coenen, R., Coffey, J. W., Colas, I., Collins, L., Conka, S., Conroy, D., Conway, S., Coombs, N., Cooper, D., Corradino, S. R., Corre, C., Corrigan, Y., Cortes, G., Coster, S., Couchman, D., Cox, A. S., Craciunescu, M. P., Cramp, T., Craven, S., Crisanti, R., Croci, F., Croft, G., Crombã©, D., Crowe, K., Cruz, R., Cseh, N., Cufar, G., Cullen, A., Curuia, A., Czarnecka, M., Dabirikhah, A., Dalgliesh, H., Dalley, P., Dankowski, S., Darrow, J., Davies, D., Davis, O., Day, W., Day, C., I. E., Bock, De, Castro, De, De La Cal, De La Luna, Masi, De, Pablos, De, J. L., Temmerman, De, Tommasi, De, Vries, De, Deakin, P., Deane, K., Degli, Agostini, Dejarnac, F., Delabie, R., Den, Harder, Dendy, N., Denis, R. O., Denner, J., Devaux, P., Devynck, S., Maio, Di, Siena, Di, Troia, Di, Dinca, C., D'Inca, P., Ding, R., Dittmar, B., Doerk, T., Doerner, H., Donnã©, R. P., Dorling, T., S. E., Dormido, Canto, Doswon, S., Douai, S., Doyle, D., Drenik, P. T., Drewelow, A., Drews, P., Duckworth, P., Dumont, P. h., Dumortier, R., Dunai, P., Dunne, D., Äžuran, M., Durodiã©, I., Dutta, F., Duval, P., Dux, B. P., Dylst, R., Dzysiuk, K., Edappala, N., Edmond, P. V., Edwards, J., Edwards, A. M., Eich, J., Ekedahl, T. h., Jorf, El, Elsmore, R., Enachescu, C. G., Ericsson, M., Eriksson, G., Eriksson, F., Eriksson, J., Esposito, L. G., Esquembri, B., Esser, S., Esteve, H. G., Evans, D., Evans, B., Evison, G. E., Ewart, G., Fagan, G. D., Faitsch, D., Falie, M., Fanni, D., Fasoli, A., Faustin, A., Fawlk, J. M., Fazendeiro, N., Fedorczak, L., Felton, N., Fenton, R. C., Fernades, K., Fernandes, A., Ferreira, H., Fessey, J., Fã©vrier, J. A., Ficker, O., Field, O., Fietz, A., Figueiredo, S., Figueiredo, A., Fil, J., Finburg, A., Firdaouss, P., Fischer, M., Fittill, U., Fitzgerald, L., Flammini, M., Flanagan, D., Fleming, J., Flinders, C., Fonnesu, K., Fontdecaba, N., Formisano, J. M., Forsythe, A., Fortuna, L., Fortuna, Zalesna, Fortune, E., Foster, M., Franke, S., Franklin, T., Frasca, T., Frassinetti, M., Freisinger, L., Fresa, M., Frigione, R., Fuchs, D., Fuller, V., Futatani, D., Fyvie, S., Gã¡l, J., Galassi, K., Gaå‚azka, D., Galdon, Quiroga, Gallagher, J., Gallart, J., Galvã¡o, D., Gao, R., Gao, X., Garcia, Y., Garcia, Carrasco, Garcã¬a, Muã±oz, Gardarein, M., Garzotti, J. L., Gaudio, L., Gauthier, P., Gear, E., Gee, D. F., Geiger, S. J., Gelfusa, B., Gerasimov, M., Gervasini, S., Gethins, G., Ghani, M., Ghate, Z., Gherendi, M., Giacalone, M., Giacomelli, J. C., Gibson, L., Giegerich, C. S., Gil, T., Gil, C., Gilligan, L., Gin, S., Giovannozzi, D., Girardo, E., Giroud, J. B., Giruzzi, C., Gerardo, Glã¶ggler, Godwin, S., Goff, J., Gohil, J., Goloborod'Ko, P., Gomes, V., Goncalves, R., Goniche, B., Goodliffe, M., Goodyear, M., Gorini, A., Gosk, G., Goulding, M., Goussarov, R., Gowland, A., Graham, R., Graham, B., Graves, M. E., Grazier, J. P., Grazier, N., Green, P., Greuner, N. R., Grierson, H., Griph, B., Grisolia, F. S., Grist, C., Groth, D., Grove, M., Grundy, R., Grzonka, C. N., Guard, J., Guã©rard, D., Guillemaut, C., Guirlet, C., Gurl, R., Utoh, C., Hackett, H. H., Hacquin, L. J., Hagar, S., Hager, A., Hakola, R., Halitovs, A., Hall, M., S. J., Hallworth, Cook, S. P., Hamlyn, Harris, Hammond, C., Harrington, K., Harrison, C., Harting, J., Hasenbeck, D., Hatano, F., Hatch, Y., Haupt, D. R., Hawes, T. D. V., Hawkes, J., Hawkins, N. C., Hawkins, J., Haydon, P., Hayter, P. W., Hazel, N., Heesterman, S., Heinola, P. J. L., Hellesen, K., Hellsten, C., Helou, T., Hemming, W., Hender, O. N., Henderson, T. C., Henderson, M., Henriques, S. S., Hepple, R., Hermon, D., Hertout, G., Hidalgo, P., Highcock, C., Hill, E. G., Hillairet, M., Hillesheim, J., Hillis, J., Hizanidis, D., Hjalmarsson, K., Hobirk, A., Hodille, J., Hogben, E., Hogeweij, C. H. A., Hollingsworth, G. M. D., Hollis, A., Homfray, S., Horã¡äek, D. A., Hornung, J., Horton, G., Horton, A. R., Horvath, L. D., Hotchin, L., Hough, S. P., Howarth, M. R., Hubbard, P. J., Huber, A., Huddleston, V., Hughes, T. M., Huijsmans, M., Hunter, G. T. A., Huynh, C. L., Hynes, P., Iglesias, A. M., Imazawa, D., Imbeaux, N., Imrã¬å¡ek, F., Incelli, M., Innocente, M., Irishkin, P., Ivanova, Stanik, Jachmich, I., Jacobsen, S., Jacquet, A. S., Jansons, P., Jardin, J., Jã¤rvinen, A., Jaulmes, A., Jednorã³g, F., Jenkins, S., Jeong, I., Jepu, C., Joffrin, I., Johnson, E., Johnson, R., Johnston, T., Jane, Joita, Jones, L., Jones, G., Hoshino, T. T. C., Kallenbach, K. K., Kamiya, A., Kaniewski, K., Kantor, J., Kappatou, A., Karhunen, A., Karkinsky, J., Karnowska, D., Kaufman, I., Kaveney, M., Kazakov, G., Kazantzidis, Y., Keeling, V., Keenan, D. L., Keep, T., Kempenaars, J., Kennedy, M., Kenny, C., Kent, D., Kent, J., Khilkevich, O. N., Kim, E., Kim, H. T., Kinch, H. S., King, A., King, C., King, D., Kinna, R. F., Kiptily, D. J., Kirk, V., Kirov, A., Kirschner, K., Kizane, A., Klepper, G., Klix, C., Knight, A., Knipe, P., Knott, S. J., Kobuchi, S., Kã¶chl, T., Kocsis, F., Kodeli, G., Kogan, I., Kogut, L., Koivuranta, D., Kominis, S., Kã¶ppen, Y., Kos, M., Koskela, B., Koslowski, T., Koubiti, H. R., Kovari, M., Kowalska, Strzè©ciwilk, Krasilnikov, E., Krasilnikov, A., Krawczyk, V., Kresina, N., Krieger, M., Krivska, K., Kruezi, A., Ksiaå¼ek, U., Kukushkin, I., Kundu, A., Kurki, Suonio, Kwak, T., Kwiatkowski, S., Kwon, R., Laguardia, O. J., Lahtinen, L., Laing, A., Lam, A., Lambertz, N., Lane, H. T., Lang, C., Lanthaler, P. T., Lapins, S., Lasa, J., Last, A., Łaszyå„ska, J. R., Lawless, E., Lawson, R., Lawson, A., Lazaros, K. D., Lazzaro, A., Leddy, E., Lee, J., Lefebvre, S., Leggate, X., Lehmann, H. J., Lehnen, J., Leichtle, M., Leichuer, D., Leipold, P., Lengar, F., Lennholm, I., Lerche, M., Lescinskis, E., Lesnoj, A., Letellier, S., Leyland, E., Leysen, M., Li, W., Liang, L., Likonen, Y., Linke, J., Linsmeier, J., Lipschultz, C. h., Liu, B., Liu, G., Schiavo, Lo, Loarer, V. P., Loarte, T., Lobel, A., Lomanowski, R. C., Lomas, B., Lã¶nnroth, P. J., Lã³pez, J., J. M., Lã³pez, Razola, Lorenzini, J., Losada, R., Lovell, U., Loving, J. J., Lowry, A. B., Luce, C., Lucock, T., Lukin, R. M. A., Luna, A., Lungaroni, C., Lungu, M., Lungu, C. P., Lunniss, M., Lupelli, A., Lyssoivan, I., Macdonald, A., Macheta, N., Maczewa, P., Magesh, K., Maget, B., Maggi, P., Maier, C., Mailloux, H., Makkonen, J., Makwana, T., Malaquias, R., Malizia, A., Manas, A., Manning, P., Manso, A., Mantica, M. E., Mantsinen, P., Manzanares, M., Maquet, A., Marandet, P. h., Marcenko, Y., Marchetto, N., Marchuk, C., Marinelli, O., Marinucci, M., Markoviä, M., Marocco, T., Marot, D., Marren, L., Marshal, C. A., Martin, R., Martin, A., Martìn De Aguilera, Martã¬nez, A., F. J., Martã¬n, Solã¬s, Martynova, J. R., Maruyama, Y., Masiello, S., Maslov, A., Matejcik, M., Mattei, S., Matthews, M., Maviglia, G. F., Mayer, F., Mayoral, M., M. L., May, Smith, Mazon, T., Mazzotta, D., Mcadams, C., Mccarthy, R., Mcclements, P. J., Mccormack, K. G., Mccullen, O., Mcdonald, P. A., Mcintosh, D., Mckean, S., Mckehon, R., Meadows, J., Meakins, R. C., Medina, A., Medland, F., Medley, M., Meigh, S., Meigs, S., Meisl, A. G., Meitner, G., Meneses, S., Menmuir, L., Mergia, S., Merrigan, K., Mertens, I. R., Meshchaninov, P. h., Messiaen, S., Meyer, A., Mianowski, H., Michling, S., Middleton, Gear, Miettunen, D., Militello, J., Militello, Asp, Miloshevsky, E., Mink, G., Minucci, F., Miyoshi, S., Mlynã¡å™, Y., Molina, J., Monakhov, D., Moneti, I., Mooney, M., Moradi, R., Mordijck, S., Moreira, S., Moreno, L., Moro, R., Morris, F., Morris, A. W., Moser, J., Mosher, L., Moulton, S., Murari, D., Muraro, A., Murphy, A., Asakura, S., N. N., Na, Nabais, Y. S., Naish, F., Nakano, R., Nardon, T., Naulin, E., Nave, V., Nedzelski, M. F. F., Nemtsev, I., Nespoli, G., Neto, F., Neu, A., Neverov, R., Newman, V. S., Nicholls, M., Nicolas, K. J., Nielsen, T., Nielsen, A. H., Nilsson, P., Nishijima, E., Noble, D., Nocente, C., Nodwell, M., Nordlund, D., Nordman, K., Nouailletas, H., Nunes, R., Oberkofler, I., Odupitan, M., Ogawa, T., O'Gorman, M. T., Okabayashi, T., Olney, M., Omolayo, R., O'Mullane, O., Ongena, M., Orsitto, J., Orszagh, F., Oswuigwe, J., Otin, B. I., Owen, R., Paccagnella, A., Pace, R., Pacella, N., Packer, D., Page, L. W., Pajuste, A., Palazzo, E., Pamela, S., Panja, S., Papp, S., Paprok, P., Parail, R., Park, V., Parra, Diaz, Parsons, F., Pasqualotto, M., Patel, R., Pathak, A., Paton, S., Patten, D., Pau, H., Pawelec, A., Paz, Soldan, Peackoc, C., Pearson, A., Pehkonen, I. J., Peluso, S. P., Penot, E., Pereira, C., Pereira, A., Pereira, Puglia, P. P., Perez Von Thun, Peruzzo, C., Peschanyi, S., Peterka, S., Petersson, M., Petravich, P., Petre, G., Petrella, A., Petrå¾ilka, N., Peysson, V., Pfefferlã©, Y., Philipps, D., Pillon, V., Pintsuk, M., Piovesan, G., Pires Dos Reis, Piron, Lidia, Pironti, A., Pisano, F., Pitts, R., Pizzo, F., Plyusnin, V., Pomaro, N., Pompilian, O. G., Pool, P. J., Popovichev, S., Porfiri, M. T., Porosnicu, C., Porton, M., Possnert, G., Potzel, S., Powell, T., Pozzi, J., Prajapati, V., Prakash, R., Prestopino, G., Price, D., Price, M., Price, R., Prior, P., Proudfoot, R., Pucella, G., Puglia, P., Puiatti, M. E., Pulley, D., Purahoo, K., Pã¼tterich, T. h., Rachlew, E., Rack, M., Ragona, R., Rainford, M. S. J., Rakha, A., Ramogida, G., Ranjan, S., Rapson, C. J., Rasmussen, J. J., Rathod, K., Rattã¡, G., Ratynskaia, S., Ravera, G., Rayner, C., Rebai, M., Reece, D., Reed, A., Rã©fy, D., Regan, B., Regaã±a, J., Reich, M., Reid, N., Reimold, F., Reinhart, M., Reinke, M., Reiser, D., Rendell, D., Reux, C., Reyes, Cortes, Reynolds, S. D. A., Riccardo, S., Richardson, V., Riddle, N., Rigamonti, K., Rimini, D., Risner, F. G., Riva, J., Roach, M., Robins, C., Robinson, R. J., Robinson, S. A., Robson, T., Roccella, D. W., Rodionov, R., Rodrigues, R., Rodriguez, P., Rohde, J., Romanelli, V., Romanelli, F., Romanelli, M., Romazanov, S., Rowe, J., Rubel, S., Rubinacci, M., Rubino, G., Ruchko, G., Ruiz, L., Ruset, M., Rzadkiewicz, C., Saarelma, J., Sabot, S., Safi, R., Sagar, E., Saibene, P., Saint, Laurent, Salewski, F., Salmi, M., Salmon, A., Salzedas, R., Samaddar, F., Samm, D., Sandiford, U., Santa, D., Santala, P., Santos, M. I. K., Santucci, B., Sartori, A., Sartori, F., Sauter, R., Scannell, O., Schlummer, R., Schmid, T., Schmidt, K., Schmuck, V., Schneider, S., Schã¶pf, M., Schwã¶rer, K., Scott, D., Sergienko, S. D., Sertoli, G., Shabbir, M., Sharapov, A., Shaw, S. E., Shaw, A., Sheikh, R., Shepherd, H., Shevelev, A., Shumack, A., Sias, A., Sibbald, G., Sieglin, M., Silburn, B., Silva, S., Silva, A., Simmons, C., Simpson, P. A., Simpson, Hutchinson, Sinha, J., Sipilã¤, A., Sips, S. K., Sirã©n, A. C. C., Sirinelli, P., Sjã¶strand, A., Skiba, H., Skilton, M., Slabkowska, R., Slade, K., Smith, B., Smith, N., Smith, P. G., Smith, R., Smithies, T. J., Snoj, M., Soare, L., Solano, S., Somers, E. R., Sommariva, A., Sonato, C., Piergiorgio, Sopplesa, Sousa, A., Sozzi, J., Spagnolo, C., Silvia, Spelzini, Spineanu, T., Stables, F., Stamatelatos, G., Stamp, I., Staniec, M. F., Stankå«nas, P., Stan, Sion, Stead, C., Stefanikova, M. J., Stepanov, E., Stephen, I., Stephen, A. V., Stevens, M., Stevens, A., Strachan, B. D., Strand, J., Strauss, P., Strã¶m, H. R., Stubbs, P., Studholme, G., Subba, W., Summers, F., Svensson, H. P., Åšwiderski, J., Szabolics, Å. ., Szawlowski, T., Szepesi, M., Suzuki, G., Tã¡l, T. T., Tala, B., Talbot, T., Talebzadeh, A. R., Taliercio, S., Cesare, Tamain, Tame, P., Tang, C., Tardocchi, W., Taroni, M., Taylor, L., Taylor, D., Tegnered, K. A., Telesca, D., Teplova, G., Terranova, N., David, Testa, Tholerus, D., Thomas, E., Thomas, J., Thomas, J. D., Thompson, P., Thompson, A., Thompson, C. A., Thorne, V. K., Thornton, L., Thrysã¸e, A., Tigwell, A. S., Tipton, P. A., Tiseanu, N., Tojo, I., Tokitani, H., Tolias, M., Tomeå¡, P., Tonner, M., Towndrow, P., Trimble, M., Tripsky, P., Tsalas, M., Tsavalas, M., Tskhakaya, Jun, Turner, D., Turner, I., Turnyanskiy, M. M., Tvalashvili, M., Tyrrell, G., Uccello, S. G. J., Abidin, Ul, Uljanovs, Z., Ulyatt, J., Urano, D., Uytdenhouwen, H., Vadgama, I., Valcarcel, A. P., Valentinuzzi, D., Valisa, M., Vallejos, Olivares, Valovic, P., Van De Mortel, Van, Eester, Van, Renterghem, Van, Rooij, Varje, G. J., Varoutis, J., Vartanian, S., Vasava, S., Vasilopoulou, K., Vega, T., Verdoolaege, J., Verhoeven, G., Verona, R., Verona, Rinati, Veshchev, G., Vianello, E., Vicente, N., Viezzer, J., Villari, E., Villone, S., Vincenzi, F., Pietro, Vinyar, Viola, I., Vitins, B., Vizvary, A., Vlad, Z., Voitsekhovitch, M., Vondrã¡äek, I., Vora, P., Vu, N., Pires De Sa, Wakeling, W. W., Waldon, B., Walkden, C. W. F., Walker, N., Walker, M., Walsh, R., Wang, M., Wang, E., Warder, N., Warren, S., Waterhouse, R. J., Watkins, J., Watts, N. W., Wauters, C., Weckmann, T., Weiland, A., Weisen, J., Weiszflog, H., Wellstood, M., West, C., Wheatley, A. T., Whetham, M. R., Whitehead, S., Whitehead, A. M., Widdowson, B. D., Wiesen, A. M., Wilkinson, S., Williams, J., Wilson, M., Wilson, A. R., Wilson, D. J., Wilson, H. R., Wischmeier, J., Withenshaw, M., Withycombe, G., Witts, A., Wood, D. M., Wood, D., Woodley, R., Wray, C., Wright, S., Wright, J., J. C., Wu, Wukitch, J., Wynn, S., Xu, A., Yadikin, T., Yanling, D., Yao, W., Yavorskij, L., Yoo, V., Young, M. G., Young, C., Young, D., Young, I. D., Zacks, R., Zagorski, J., Zaitsev, R., Zanino, F. S., Zarins, R., Zastrow, A., Zerbini, K. D., Zhang, M., Zhou, W., Zilli, Y., Zoita, E., Zoletnik, V., Zychor, S., I, and JET Contributors

Subjects
Jet (fluid), Surface analysis, Materials science, Divertor, JET-ILW, Material deposition, Material erosion, Nuclear engineering, Condensed Matter Physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, 13. Climate action, Material Erosion, 0103 physical sciences, Erosion, 010306 general physics, Deposition (chemistry), Mathematical Physics
Abstract

Erosion of plasma-facing materials and successive transport and redeposition of eroded material are crucial processes determining the lifetime of plasma-facing components and the trapped tritium inventory in redeposited material layers. Erosion and deposition in the JET divertor were studied during the second JET ITER-like wall campaign ILW-2 in 2013-2014 by using a poloidal row of specially prepared divertor marker tiles including the tungsten bulk tile 5. The marker tiles were analyzed using elastic backscattering with 3-4.5 MeV incident protons and nuclear reaction analysis using 0.8-4.5 MeV 3He ions before and after the campaign. The erosion/deposition pattern observed during ILW-2 is qualitatively comparable to the first campaign ILW-1 in 2011-2012: deposits consist mainly of beryllium with 5-20 at.% of carbon and oxygen and small amounts of Ni and W. The highest deposition with deposited layer thicknesses up to 30 μm per campaign is still observed on the upper and horizontal parts of the inner divertor. Outer divertor tiles 5, 6, 7 and 8 are net W erosion areas. The observed D inventory is roughly comparable to the inventory observed during ILW-1. The results obtained during ILW-2 therefore confirm the positive results observed in ILW-1 with respect to reduced material deposition and hydrogen isotopes retention in the divertor.

Published
2017

8. Overview of fuel inventory in JET with the ITER-like wall

Author

Widdowson, A., Coad, J. P., Alves, E., Baron-Wiechec, A., Barradas, N. P., Brezinsek, S., Catarino, N., Corregidor, V., Heinola, K., Koivuranta, S., Krat, S., Lahtinen, A., Likonen, J., Matthews, G. F., Mayer, M., Petersson, P., Litaudon, Rubel M., Abduallev, X., Abhangi, S., Abreu, M., Afzal, P., Aggarwal, M., Ahlgren, K. M., Ahn, T., J. H., Aho, Mantila, Aiba, L., Airila, N., Albanese, M., Aldred, R., Alegre, V., Alessi, D., Aleynikov, E., Alfier, P., Alberto, Alkseev, Allinson, A., Alper, M., Alves, B., Ambrosino, E., Ambrosino, G., Amicucci, R., Amosov, L., Andersson, Sundã©n, Angelone, E., Anghel, M., Angioni, M., Appel, C., Appelbee, L., Arena, C., Ariola, P., Arnichand, M., Arshad, H., Ash, S., Ashikawa, A., Aslanyan, N., Asunta, V., Auriemma, O., Fulvio, Austin, Avotina, Y., Axton, L., Ayres, M. D., Bacharis, C., Baciero, M., Baiã¡o, A., Bailey, D., Baker, S., Balboa, A., Balden, I., Balshaw, M., Bament, N., Banks, R., Baranov, J. W., Barnard, Y. F., Barnes, M. A., Barnes, D., Barnsley, M., Baron, Wiechec, Barrera, Orte, Baruzzo, L., Matteo, Basiuk, Bassan, V., Bastow, M., Batista, R., Batistoni, A., Baughan, P., Bauvir, R., Baylor, B., Bazylev, L., Beal, B., Beaumont, J., Beckers, P. S., Beckett, M., Becoulet, B., Bekris, A., Beldishevski, N., Bell, M., Belli, K., Bellinger, F., Belonohy, M., Ben, Ayed, Benterman, N., Bergsã¥ker, N. A., Bernardo, H., Bernert, J., Berry, M., Bertalot, M., Besliu, L., Beurskens, C., Bieg, M., Bielecki, B., Biewer, J., Bigi, T., Bã¬lkovã¡, M., Binda, P., Bisoffi, F., Bizarro, A., Bjã¶rkas, J. P. S., Blackburn, C., Blackman, J., Blackman, K., Blanchard, T. R., Blatchford, P., Bobkov, P., Boboc, V., Bodnã¡r, A., Bogar, G., Bolshakova, O., Bolzonella, I., Tommaso, Bonanomi, Bonelli, N., Boom, F., Booth, J., Borba, J., Borodin, D., Borodkina, D., Botrugno, I., Bottereau, A., Boulting, C., Bourdelle, P., Bowden, C., Bower, M., Bowman, C., Boyce, C., Boyd, T., Boyer, C., Bradshaw, H. J., Braic, J. M. A., Bravanec, V., Breizman, R., Bremond, B., Brennan, S., Breton, P. D., Brett, S., Brezinsek, A., Bright, S., Brix, M. D. J., Broeckx, M., Brombin, W., Matteo, Broså‚awski, Brown, A., Brown, D. P. D., Bruno, M., Bucalossi, E., Buch, J., Buchanan, J., Buckley, J., Budny, M. A., Bufferand, R., Bulman, H., Bulmer, M., Bunting, N., Buratti, P., Burckhart, P., Buscarino, A., Busse, A., Butler, A., Bykov, N. K., Byrne, I., Cahyna, J., Calabrã², P., Calvo, G., Camenen, I., Camp, Y., Campling, P., Cane, D. C., Cannas, J., Capel, B., Card, A. J., Cardinali, P. J., Carman, A., Carr, P., Carralero, M., Carraro, D., Carvalho, L., Carvalho, B. B., Carvalho, I., Casson, P., Castaldo, F. J., Catarino, C., Caumont, N., Causa, J., Cavazzana, F., Cave, Ayland, Cavinato, K., Cecconello, M., Ceccuzzi, M., Cecil, S., Cenedese, E., Angelo, Cesario, Challis, R., Chandler, C. D., Chandra, M., Chang, D., Chankin, C. S., Chapman, A., Chapman, I. T., Chernyshova, S. C., Chitarin, M., Giuseppe, Ciraolo, Ciric, G., Citrin, D., Clairet, J., Clark, F., Clark, E., Clarkson, M., Clatworthy, R., Clements, D., Cleverly, C., Coad, M., Coates, J. P., Cobalt, P. A., Coccorese, A., Cocilovo, V., Coda, V., Coelho, S., Coenen, R., Coffey, J. W., Colas, I., Collins, L., Conka, S., Conroy, D., Conway, S., Coombs, N., Cooper, D., Corradino, S. R., Corre, C., Corrigan, Y., Cortes, G., Coster, S., Couchman, D., Cox, A. S., Craciunescu, M. P., Cramp, T., Craven, S., Crisanti, R., Croci, F., Croft, G., Crombã©, D., Crowe, K., Cruz, R., Cseh, N., Cufar, G., Cullen, A., Curuia, A., Czarnecka, M., Dabirikhah, A., Dalgliesh, H., Dalley, P., Dankowski, S., Darrow, J., Davies, D., Davis, O., Day, W., Day, C., I. E., Bock, De, Castro, De, De La Cal, De La Luna, Masi, De, Pablos, De, J. L., Temmerman, De, Tommasi, De, Vries, De, Deakin, P., Deane, K., Degli, Agostini, Dejarnac, F., Delabie, R., Den, Harder, Dendy, N., Denis, R. O., Denner, J., Devaux, P., Devynck, S., Maio, Di, Siena, Di, Troia, Di, Dinca, C., D'Inca, P., Ding, R., Dittmar, B., Doerk, T., Doerner, H., Donnã©, R. P., Dorling, T., S. E., Dormido, Canto, Doswon, S., Douai, S., Doyle, D., Drenik, P. T., Drewelow, A., Drews, P., Duckworth, P., Dumont, P. h., Dumortier, R., Dunai, P., Dunne, D., Äžuran, M., Durodiã©, I., Dutta, F., Duval, P., Dux, B. P., Dylst, R., Dzysiuk, K., Edappala, N., Edmond, P. V., Edwards, J., Edwards, A. M., Eich, J., Ekedahl, T. h., Jorf, El, Elsmore, R., Enachescu, C. G., Ericsson, M., Eriksson, G., Eriksson, F., Eriksson, J., Esposito, L. G., Esquembri, B., Esser, S., Esteve, H. G., Evans, D., Evans, B., Evison, G. E., Ewart, G., Fagan, G. D., Faitsch, D., Falie, M., Fanni, D., Fasoli, A., Faustin, A., Fawlk, J. M., Fazendeiro, N., Fedorczak, L., Felton, N., Fenton, R. C., Fernades, K., Fernandes, A., Ferreira, H., Fessey, J., Fã©vrier, J. A., Ficker, O., Field, O., Fietz, A., Figueiredo, S., Figueiredo, A., Fil, J., Finburg, A., Firdaouss, P., Fischer, M., Fittill, U., Fitzgerald, L., Flammini, M., Flanagan, D., Fleming, J., Flinders, C., Fonnesu, K., Fontdecaba, N., Formisano, J. M., Forsythe, A., Fortuna, L., Fortuna, Zalesna, Fortune, E., Foster, M., Franke, S., Franklin, T., Frasca, T., Frassinetti, M., Freisinger, L., Fresa, M., Frigione, R., Fuchs, D., Fuller, V., Futatani, D., Fyvie, S., Gã¡l, J., Galassi, K., Gaå‚azka, D., Galdon, Quiroga, Gallagher, J., Gallart, J., Galvã¡o, D., Gao, R., Gao, X., Garcia, Y., Garcia, Carrasco, Garcã¬a, Muã±oz, Gardarein, M., Garzotti, J. L., Gaudio, L., Gauthier, P., Gear, E., Gee, D. F., Geiger, S. J., Gelfusa, B., Gerasimov, M., Gervasini, S., Gethins, G., Ghani, M., Ghate, Z., Gherendi, M., Giacalone, M., Giacomelli, J. C., Gibson, L., Giegerich, C. S., Gil, T., Gil, C., Gilligan, L., Gin, S., Giovannozzi, D., Girardo, E., Giroud, J. B., Giruzzi, C., Gerardo, Glã¶ggler, Godwin, S., Goff, J., Gohil, J., Goloborod'Ko, P., Gomes, V., Goncalves, R., Goniche, B., Goodliffe, M., Goodyear, M., Gorini, A., Gosk, G., Goulding, M., Goussarov, R., Gowland, A., Graham, R., Graham, B., Graves, M. E., Grazier, J. P., Grazier, N., Green, P., Greuner, N. R., Grierson, H., Griph, B., Grisolia, F. S., Grist, C., Groth, D., Grove, M., Grundy, R., Grzonka, C. N., Guard, J., Guã©rard, D., Guillemaut, C., Guirlet, C., Gurl, R., Utoh, C., Hackett, H. H., Hacquin, L. J., Hagar, S., Hager, A., Hakola, R., Halitovs, A., Hall, M., S. J., Hallworth, Cook, S. P., Hamlyn, Harris, Hammond, C., Harrington, K., Harrison, C., Harting, J., Hasenbeck, D., Hatano, F., Hatch, Y., Haupt, D. R., Hawes, T. D. V., Hawkes, J., Hawkins, N. C., Hawkins, J., Haydon, P., Hayter, P. W., Hazel, N., Heesterman, S., Heinola, P. J. L., Hellesen, K., Hellsten, C., Helou, T., Hemming, W., Hender, O. N., Henderson, T. C., Henderson, M., Henriques, S. S., Hepple, R., Hermon, D., Hertout, G., Hidalgo, P., Highcock, C., Hill, E. G., Hillairet, M., Hillesheim, J., Hillis, J., Hizanidis, D., Hjalmarsson, K., Hobirk, A., Hodille, J., Hogben, E., Hogeweij, C. H. A., Hollingsworth, G. M. D., Hollis, A., Homfray, S., Horã¡äek, D. A., Hornung, J., Horton, G., Horton, A. R., Horvath, L. D., Hotchin, L., Hough, S. P., Howarth, M. R., Hubbard, P. J., Huber, A., Huddleston, V., Hughes, T. M., Huijsmans, M., Hunter, G. T. A., Huynh, C. L., Hynes, P., Iglesias, A. M., Imazawa, D., Imbeaux, N., Imrã¬å¡ek, F., Incelli, M., Innocente, M., Irishkin, P., Ivanova, Stanik, Jachmich, I., Jacobsen, S., Jacquet, A. S., Jansons, P., Jardin, J., Jã¤rvinen, A., Jaulmes, A., Jednorã³g, F., Jenkins, S., Jeong, I., Jepu, C., Joffrin, I., Johnson, E., Johnson, R., Johnston, T., Jane, Joita, Jones, L., Jones, G., Hoshino, T. T. C., Kallenbach, K. K., Kamiya, A., Kaniewski, K., Kantor, J., Kappatou, A., Karhunen, A., Karkinsky, J., Karnowska, D., Kaufman, I., Kaveney, M., Kazakov, G., Kazantzidis, Y., Keeling, V., Keenan, D. L., Keep, T., Kempenaars, J., Kennedy, M., Kenny, C., Kent, D., Kent, J., Khilkevich, O. N., Kim, E., Kim, H. T., Kinch, H. S., King, A., King, C., King, D., Kinna, R. F., Kiptily, D. J., Kirk, V., Kirov, A., Kirschner, K., Kizane, A., Klepper, G., Klix, C., Knight, A., Knipe, P., Knott, S. J., Kobuchi, S., Kã¶chl, T., Kocsis, F., Kodeli, G., Kogan, I., Kogut, L., Koivuranta, D., Kominis, S., Kã¶ppen, Y., Kos, M., Koskela, B., Koslowski, T., Koubiti, H. R., Kovari, M., Kowalska, Strzè©ciwilk, Krasilnikov, E., Krasilnikov, A., Krawczyk, V., Kresina, N., Krieger, M., Krivska, K., Kruezi, A., Ksiaå¼ek, U., Kukushkin, I., Kundu, A., Kurki, Suonio, Kwak, T., Kwiatkowski, S., Kwon, R., Laguardia, O. J., Lahtinen, L., Laing, A., Lam, A., Lambertz, N., Lane, H. T., Lang, C., Lanthaler, P. T., Lapins, S., Lasa, J., Last, A., Łaszyå„ska, J. R., Lawless, E., Lawson, R., Lawson, A., Lazaros, K. D., Lazzaro, A., Leddy, E., Lee, J., Lefebvre, S., Leggate, X., Lehmann, H. J., Lehnen, J., Leichtle, M., Leichuer, D., Leipold, P., Lengar, F., Lennholm, I., Lerche, M., Lescinskis, E., Lesnoj, A., Letellier, S., Leyland, E., Leysen, M., Li, W., Liang, L., Likonen, Y., Linke, J., Linsmeier, J., Lipschultz, C. h., Liu, B., Liu, G., Schiavo, Lo, Loarer, V. P., Loarte, T., Lobel, A., Lomanowski, R. C., Lomas, B., Lã¶nnroth, P. J., Lã³pez, J., J. M., Lã³pez, Razola, Lorenzini, J., Losada, R., Lovell, U., Loving, J. J., Lowry, A. B., Luce, C., Lucock, T., Lukin, R. M. A., Luna, A., Lungaroni, C., Lungu, M., Lungu, C. P., Lunniss, M., Lupelli, A., Lyssoivan, I., Macdonald, A., Macheta, N., Maczewa, P., Magesh, K., Maget, B., Maggi, P., Maier, C., Mailloux, H., Makkonen, J., Makwana, T., Malaquias, R., Malizia, A., Manas, A., Manning, P., Manso, A., Mantica, M. E., Mantsinen, P., Manzanares, M., Maquet, A., Marandet, P. h., Marcenko, Y., Marchetto, N., Marchuk, C., Marinelli, O., Marinucci, M., Markoviä, M., Marocco, T., Marot, D., Marren, L., Marshal, C. A., Martin, R., Martin, A., Martìn De Aguilera, Martã¬nez, A., F. J., Martã¬n, Solã¬s, Martynova, J. R., Maruyama, Y., Masiello, S., Maslov, A., Matejcik, M., Mattei, S., Matthews, M., Maviglia, G. F., Mayer, F., Mayoral, M., M. L., May, Smith, Mazon, T., Mazzotta, D., Mcadams, C., Mccarthy, R., Mcclements, P. J., Mccormack, K. G., Mccullen, O., Mcdonald, P. A., Mcintosh, D., Mckean, S., Mckehon, R., Meadows, J., Meakins, R. C., Medina, A., Medland, F., Medley, M., Meigh, S., Meigs, S., Meisl, A. G., Meitner, G., Meneses, S., Menmuir, L., Mergia, S., Merrigan, K., Mertens, I. R., Meshchaninov, P. h., Messiaen, S., Meyer, A., Mianowski, H., Michling, S., Middleton, Gear, Miettunen, D., Militello, J., Militello, Asp, Miloshevsky, E., Mink, G., Minucci, F., Miyoshi, S., Mlynã¡å™, Y., Molina, J., Monakhov, D., Moneti, I., Mooney, M., Moradi, R., Mordijck, S., Moreira, S., Moreno, L., Moro, R., Morris, F., Morris, A. W., Moser, J., Mosher, L., Moulton, S., Murari, D., Muraro, A., Murphy, A., Asakura, S., N. N., Na, Nabais, Y. S., Naish, F., Nakano, R., Nardon, T., Naulin, E., Nave, V., Nedzelski, M. F. F., Nemtsev, I., Nespoli, G., Neto, F., Neu, A., Neverov, R., Newman, V. S., Nicholls, M., Nicolas, K. J., Nielsen, T., Nielsen, A. H., Nilsson, P., Nishijima, E., Noble, D., Nocente, C., Nodwell, M., Nordlund, D., Nordman, K., Nouailletas, H., Nunes, R., Oberkofler, I., Odupitan, M., Ogawa, T., O'Gorman, M. T., Okabayashi, T., Olney, M., Omolayo, R., O'Mullane, O., Ongena, M., Orsitto, J., Orszagh, F., Oswuigwe, J., Otin, B. I., Owen, R., Paccagnella, A., Pace, R., Pacella, N., Packer, D., Page, L. W., Pajuste, A., Palazzo, E., Pamela, S., Panja, S., Papp, S., Paprok, P., Parail, R., Park, V., Parra, Diaz, Parsons, F., Pasqualotto, M., Patel, R., Pathak, A., Paton, S., Patten, D., Pau, H., Pawelec, A., Paz, Soldan, Peackoc, C., Pearson, A., Pehkonen, I. J., Peluso, S. P., Penot, E., Pereira, C., Pereira, A., Pereira, Puglia, P. P., Perez Von Thun, Peruzzo, C., Peschanyi, S., Peterka, S., Petersson, M., Petravich, P., Petre, G., Petrella, A., Petrå¾ilka, N., Peysson, V., Pfefferlã©, Y., Philipps, D., Pillon, V., Pintsuk, M., Piovesan, G., Pires Dos Reis, Piron, Lidia, Pironti, A., Pisano, F., Pitts, R., Pizzo, F., Plyusnin, V., Pomaro, N., Pompilian, O. G., Pool, P. J., Popovichev, S., Porfiri, M. T., Porosnicu, C., Porton, M., Possnert, G., Potzel, S., Powell, T., Pozzi, J., Prajapati, V., Prakash, R., Prestopino, G., Price, D., Price, M., Price, R., Prior, P., Proudfoot, R., Pucella, G., Puglia, P., Puiatti, M. E., Pulley, D., Purahoo, K., Pã¼tterich, T. h., Rachlew, E., Rack, M., Ragona, R., Rainford, M. S. J., Rakha, A., Ramogida, G., Ranjan, S., Rapson, C. J., Rasmussen, J. J., Rathod, K., Rattã¡, G., Ratynskaia, S., Ravera, G., Rayner, C., Rebai, M., Reece, D., Reed, A., Rã©fy, D., Regan, B., Regaã±a, J., Reich, M., Reid, N., Reimold, F., Reinhart, M., Reinke, M., Reiser, D., Rendell, D., Reux, C., Reyes, Cortes, Reynolds, S. D. A., Riccardo, S., Richardson, V., Riddle, N., Rigamonti, K., Rimini, D., Risner, F. G., Riva, J., Roach, M., Robins, C., Robinson, R. J., Robinson, S. A., Robson, T., Roccella, D. W., Rodionov, R., Rodrigues, R., Rodriguez, P., Rohde, J., Romanelli, V., Romanelli, F., Romanelli, M., Romazanov, S., Rowe, J., Rubel, S., Rubinacci, M., Rubino, G., Ruchko, G., Ruiz, L., Ruset, M., Rzadkiewicz, C., Saarelma, J., Sabot, S., Safi, R., Sagar, E., Saibene, P., Saint, Laurent, Salewski, F., Salmi, M., Salmon, A., Salzedas, R., Samaddar, F., Samm, D., Sandiford, U., Santa, D., Santala, P., Santos, M. I. K., Santucci, B., Sartori, A., Sartori, F., Sauter, R., Scannell, O., Schlummer, R., Schmid, T., Schmidt, K., Schmuck, V., Schneider, S., Schã¶pf, M., Schwã¶rer, K., Scott, D., Sergienko, S. D., Sertoli, G., Shabbir, M., Sharapov, A., Shaw, S. E., Shaw, A., Sheikh, R., Shepherd, H., Shevelev, A., Shumack, A., Sias, A., Sibbald, G., Sieglin, M., Silburn, B., Silva, S., Silva, A., Simmons, C., Simpson, P. A., Simpson, Hutchinson, Sinha, J., Sipilã¤, A., Sips, S. K., Sirã©n, A. C. C., Sirinelli, P., Sjã¶strand, A., Skiba, H., Skilton, M., Slabkowska, R., Slade, K., Smith, B., Smith, N., Smith, P. G., Smith, R., Smithies, T. J., Snoj, M., Soare, L., Solano, S., Somers, E. R., Sommariva, A., Sonato, C., Piergiorgio, Sopplesa, Sousa, A., Sozzi, J., Spagnolo, C., Silvia, Spelzini, Spineanu, T., Stables, F., Stamatelatos, G., Stamp, I., Staniec, M. F., Stankå«nas, P., Stan, Sion, Stead, C., Stefanikova, M. J., Stepanov, E., Stephen, I., Stephen, A. V., Stevens, M., Stevens, A., Strachan, B. D., Strand, J., Strauss, P., Strã¶m, H. R., Stubbs, P., Studholme, G., Subba, W., Summers, F., Svensson, H. P., Åšwiderski, J., Szabolics, Å. ., Szawlowski, T., Szepesi, M., Suzuki, G., Tã¡l, T. T., Tala, B., Talbot, T., Talebzadeh, A. R., Taliercio, S., Cesare, Tamain, Tame, P., Tang, C., Tardocchi, W., Taroni, M., Taylor, L., Taylor, D., Tegnered, K. A., Telesca, D., Teplova, G., Terranova, N., David, Testa, Tholerus, D., Thomas, E., Thomas, J., Thomas, J. D., Thompson, P., Thompson, A., Thompson, C. A., Thorne, V. K., Thornton, L., Thrysã¸e, A., Tigwell, A. S., Tipton, P. A., Tiseanu, N., Tojo, I., Tokitani, H., Tolias, M., Tomeå¡, P., Tonner, M., Towndrow, P., Trimble, M., Tripsky, P., Tsalas, M., Tsavalas, M., Tskhakaya, Jun, Turner, D., Turner, I., Turnyanskiy, M. M., Tvalashvili, M., Tyrrell, G., Uccello, S. G. J., Abidin, Ul, Uljanovs, Z., Ulyatt, J., Urano, D., Uytdenhouwen, H., Vadgama, I., Valcarcel, A. P., Valentinuzzi, D., Valisa, M., Vallejos, Olivares, Valovic, P., Van De Mortel, Van, Eester, Van, Renterghem, Van, Rooij, Varje, G. J., Varoutis, J., Vartanian, S., Vasava, S., Vasilopoulou, K., Vega, T., Verdoolaege, J., Verhoeven, G., Verona, R., Verona, Rinati, Veshchev, G., Vianello, E., Vicente, N., Viezzer, J., Villari, E., Villone, S., Vincenzi, F., Pietro, Vinyar, Viola, I., Vitins, B., Vizvary, A., Vlad, Z., Voitsekhovitch, M., Vondrã¡äek, I., Vora, P., Vu, N., Pires De Sa, Wakeling, W. W., Waldon, B., Walkden, C. W. F., Walker, N., Walker, M., Walsh, R., Wang, M., Wang, E., Warder, N., Warren, S., Waterhouse, R. J., Watkins, J., Watts, N. W., Wauters, C., Weckmann, T., Weiland, A., Weisen, J., Weiszflog, H., Wellstood, M., West, C., Wheatley, A. T., Whetham, M. R., Whitehead, S., Whitehead, A. M., Widdowson, B. D., Wiesen, A. M., Wilkinson, S., Williams, J., Wilson, M., Wilson, A. R., Wilson, D. J., Wilson, H. R., Wischmeier, J., Withenshaw, M., Withycombe, G., Witts, A., Wood, D. M., Wood, D., Woodley, R., Wray, C., Wright, S., Wright, J., J. C., Wu, Wukitch, J., Wynn, S., Xu, A., Yadikin, T., Yanling, D., Yao, W., Yavorskij, L., Yoo, V., Young, M. G., Young, C., Young, D., Young, I. D., Zacks, R., Zagorski, J., Zaitsev, R., Zanino, F. S., Zarins, R., Zastrow, A., Zerbini, K. D., Zhang, M., Zhou, W., Zilli, Y., Zoita, E., Zoletnik, V., Zychor, S., I, and JET Contributors

Subjects
Nuclear and High Energy Physics, Jet (fluid), Hydrogen, Plasma parameters, JET ITER-like wall, Divertor, Nuclear engineering, chemistry.chemical_element, Condensed Matter Physics, 01 natural sciences, fuel retention, 010305 fluids & plasmas, material migration, chemistry, Sputtering, visual_art, 0103 physical sciences, visual_art.visual_art_medium, Environmental science, Tile, 010306 general physics
Abstract

Post mortem analyses of JET ITER-Like-Wall tiles and passive diagnostics have been completed after each of the first two campaigns (ILW-1 and ILW-2). They show that the global fuel inventory is still dominated by co-deposition; hence plasma parameters and sputtering processes affecting material migration influence the distribution of retained fuel. In particular, differences between results from the two campaigns may be attributed to a greater proportion of pulses run with strike points in the divertor corners, and having about 300 discharges in hydrogen at the end of ILW-2. Recessed and remote areas can contribute to fuel retention due to the larger areas involved, e.g. recessed main chamber walls, gaps in castellated Be main chamber tiles and material migration to remote divertor areas. The fuel retention and material migration due to the bulk W Tile 5 during ILW-1 are presented. Overall these tiles account for only a small percentage of the global accountancy for ILW-1.

Published
2017

9. MeV-range velocity-space tomography from gamma-ray and neutron emission spectrometry measurements at JET

Author

Salewski, M., Nocente, M., Jacobsen, A. S., Binda, F., Cazzaniga, C., Ericsson, G., Eriksson, J., Gorini, G., Hellesen, C., Hjalmarsson, A., Kiptily, V. G., Koskela, T., Korsholm, S. B., Kurki-Suonio, T., Leipold, F., Madsen, J., Moseev, D., Nielsen, S. K., Rasmussen, J., Schneider, M., Sharapov, S. E., Stejner, M., Litaudon, Tardocchi M., Abduallev, X., Abhangi, S., Abreu, M., Afzal, P., Aggarwal, M., Ahlgren, K. M., Ahn, T., J. H., Aho, Mantila, Aiba, L., Airila, N., Albanese, M., Aldred, R., Alegre, V., Alessi, D., Aleynikov, E., Alfier, P., Alberto, Alkseev, Allinson, A., Alper, M., Alves, B., Ambrosino, E., Ambrosino, G., Amicucci, R., Amosov, L., Andersson, Sundã©n, Angelone, E., Anghel, M., Angioni, M., Appel, C., Appelbee, L., Arena, C., Ariola, P., Arnichand, M., Arshad, H., Ash, S., Ashikawa, A., Aslanyan, N., Asunta, V., Auriemma, O., Fulvio, Austin, Avotina, Y., Axton, L., Ayres, M. D., Bacharis, C., Baciero, M., Baiã¡o, A., Bailey, D., Baker, S., Balboa, A., Balden, I., Balshaw, M., Bament, N., Banks, R., Baranov, J. W., Barnard, Y. F., Barnes, M. A., Barnes, D., Barnsley, M., Baron, Wiechec, Barrera, Orte, Baruzzo, L., Matteo, Basiuk, Bassan, V., Bastow, M., Batista, R., Batistoni, A., Baughan, P., Bauvir, R., Baylor, B., Bazylev, L., Beal, B., Beaumont, J., Beckers, P. S., Beckett, M., Becoulet, B., Bekris, A., Beldishevski, N., Bell, M., Belli, K., Bellinger, F., Belonohy, M., Ben, Ayed, Benterman, N., Bergsã¥ker, N. A., Bernardo, H., Bernert, J., Berry, M., Bertalot, M., Besliu, L., Beurskens, C., Bieg, M., Bielecki, B., Biewer, J., Bigi, T., Bã¬lkovã¡, M., Binda, P., Bisoffi, F., Bizarro, A., Bjã¶rkas, J. P. S., Blackburn, C., Blackman, J., Blackman, K., Blanchard, T. R., Blatchford, P., Bobkov, P., Boboc, V., Bodnã¡r, A., Bogar, G., Bolshakova, O., Bolzonella, I., Tommaso, Bonanomi, Bonelli, N., Boom, F., Booth, J., Borba, J., Borodin, D., Borodkina, D., Botrugno, I., Bottereau, A., Boulting, C., Bourdelle, P., Bowden, C., Bower, M., Bowman, C., Boyce, C., Boyd, T., Boyer, C., Bradshaw, H. J., Braic, J. M. A., Bravanec, V., Breizman, R., Bremond, B., Brennan, S., Breton, P. D., Brett, S., Brezinsek, A., Bright, S., Brix, M. D. J., Broeckx, M., Brombin, W., Matteo, Broså‚awski, Brown, A., Brown, D. P. D., Bruno, M., Bucalossi, E., Buch, J., Buchanan, J., Buckley, J., Budny, M. A., Bufferand, R., Bulman, H., Bulmer, M., Bunting, N., Buratti, P., Burckhart, P., Buscarino, A., Busse, A., Butler, A., Bykov, N. K., Byrne, I., Cahyna, J., Calabrã², P., Calvo, G., Camenen, I., Camp, Y., Campling, P., Cane, D. C., Cannas, J., Capel, B., Card, A. J., Cardinali, P. J., Carman, A., Carr, P., Carralero, M., Carraro, D., Carvalho, L., Carvalho, B. B., Carvalho, I., Casson, P., Castaldo, F. J., Catarino, C., Caumont, N., Causa, J., Cavazzana, F., Cave, Ayland, Cavinato, K., Cecconello, M., Ceccuzzi, M., Cecil, S., Cenedese, E., Angelo, Cesario, Challis, R., Chandler, C. D., Chandra, M., Chang, D., Chankin, C. S., Chapman, A., Chapman, I. T., Chernyshova, S. C., Chitarin, M., Giuseppe, Ciraolo, Ciric, G., Citrin, D., Clairet, J., Clark, F., Clark, E., Clarkson, M., Clatworthy, R., Clements, D., Cleverly, C., Coad, M., Coates, J. P., Cobalt, P. A., Coccorese, A., Cocilovo, V., Coda, V., Coelho, S., Coenen, R., Coffey, J. W., Colas, I., Collins, L., Conka, S., Conroy, D., Conway, S., Coombs, N., Cooper, D., Corradino, S. R., Corre, C., Corrigan, Y., Cortes, G., Coster, S., Couchman, D., Cox, A. S., Craciunescu, M. P., Cramp, T., Craven, S., Crisanti, R., Croci, F., Croft, G., Crombã©, D., Crowe, K., Cruz, R., Cseh, N., Cufar, G., Cullen, A., Curuia, A., Czarnecka, M., Dabirikhah, A., Dalgliesh, H., Dalley, P., Dankowski, S., Darrow, J., Davies, D., Davis, O., Day, W., Day, C., I. E., Bock, De, Castro, De, De La Cal, De La Luna, Masi, De, Pablos, De, J. L., Temmerman, De, Tommasi, De, Vries, De, Deakin, P., Deane, K., Degli, Agostini, Dejarnac, F., Delabie, R., Den, Harder, Dendy, N., Denis, R. O., Denner, J., Devaux, P., Devynck, S., Maio, Di, Siena, Di, Troia, Di, Dinca, C., D'Inca, P., Ding, R., Dittmar, B., Doerk, T., Doerner, H., Donnã©, R. P., Dorling, T., S. E., Dormido, Canto, Doswon, S., Douai, S., Doyle, D., Drenik, P. T., Drewelow, A., Drews, P., Duckworth, P., Dumont, P. h., Dumortier, R., Dunai, P., Dunne, D., Äžuran, M., Durodiã©, I., Dutta, F., Duval, P., Dux, B. P., Dylst, R., Dzysiuk, K., Edappala, N., Edmond, P. V., Edwards, J., Edwards, A. M., Eich, J., Ekedahl, T. h., Jorf, El, Elsmore, R., Enachescu, C. G., Ericsson, M., Eriksson, G., Eriksson, F., Esposito, L. G., Esquembri, B., Esser, S., Esteve, H. G., Evans, D., Evans, B., Evison, G. E., Ewart, G., Fagan, G. D., Faitsch, D., Falie, M., Fanni, D., Fasoli, A., Faustin, A., Fawlk, J. M., Fazendeiro, N., Fedorczak, L., Felton, N., Fenton, R. C., Fernades, K., Fernandes, A., Ferreira, H., Fessey, J., Fã©vrier, J. A., Ficker, O., Field, O., Fietz, A., Figueiredo, S., Figueiredo, A., Fil, J., Finburg, A., Firdaouss, P., Fischer, M., Fittill, U., Fitzgerald, L., Flammini, M., Flanagan, D., Fleming, J., Flinders, C., Fonnesu, K., Fontdecaba, N., Formisano, J. M., Forsythe, A., Fortuna, L., Fortuna, Zalesna, Fortune, E., Foster, M., Franke, S., Franklin, T., Frasca, T., Frassinetti, M., Freisinger, L., Fresa, M., Frigione, R., Fuchs, D., Fuller, V., Futatani, D., Fyvie, S., Gã¡l, J., Galassi, K., Gaå‚azka, D., Galdon, Quiroga, Gallagher, J., Gallart, J., Galvã¡o, D., Gao, R., Gao, X., Garcia, Y., Garcia, Carrasco, Garcã¬a, Muã±oz, Gardarein, M., Garzotti, J. L., Gaudio, L., Gauthier, P., Gear, E., Gee, D. F., Geiger, S. J., Gelfusa, B., Gerasimov, M., Gervasini, S., Gethins, G., Ghani, M., Ghate, Z., Gherendi, M., Giacalone, M., Giacomelli, J. C., Gibson, L., Giegerich, C. S., Gil, T., Gil, C., Gilligan, L., Gin, S., Giovannozzi, D., Girardo, E., Giroud, J. B., Giruzzi, C., Gerardo, Glã¶ggler, Godwin, S., Goff, J., Gohil, J., Goloborod'Ko, P., Gomes, V., Goncalves, R., Goniche, B., Goodliffe, M., Goodyear, M., Gorini, A., Gosk, G., Goulding, M., Goussarov, R., Gowland, A., Graham, R., Graham, B., Graves, M. E., Grazier, J. P., Grazier, N., Green, P., Greuner, N. R., Grierson, H., Griph, B., Grisolia, F. S., Grist, C., Groth, D., Grove, M., Grundy, R., Grzonka, C. N., Guard, J., Guã©rard, D., Guillemaut, C., Guirlet, C., Gurl, R., Utoh, C., Hackett, H. H., Hacquin, L. J., Hagar, S., Hager, A., Hakola, R., Halitovs, A., Hall, M., S. J., Hallworth, Cook, S. P., Hamlyn, Harris, Hammond, C., Harrington, K., Harrison, C., Harting, J., Hasenbeck, D., Hatano, F., Hatch, Y., Haupt, D. R., Hawes, T. D. V., Hawkes, J., Hawkins, N. C., Hawkins, J., Haydon, P., Hayter, P. W., Hazel, N., Heesterman, S., Heinola, P. J. L., Hellesen, K., Hellsten, C., Helou, T., Hemming, W., Hender, O. N., Henderson, T. C., Henderson, M., Henriques, S. S., Hepple, R., Hermon, D., Hertout, G., Hidalgo, P., Highcock, C., Hill, E. G., Hillairet, M., Hillesheim, J., Hillis, J., Hizanidis, D., Hjalmarsson, K., Hobirk, A., Hodille, J., Hogben, E., Hogeweij, C. H. A., Hollingsworth, G. M. D., Hollis, A., Homfray, S., Horã¡äek, D. A., Hornung, J., Horton, G., Horton, A. R., Horvath, L. D., Hotchin, L., Hough, S. P., Howarth, M. R., Hubbard, P. J., Huber, A., Huddleston, V., Hughes, T. M., Huijsmans, M., Hunter, G. T. A., Huynh, C. L., Hynes, P., Iglesias, A. M., Imazawa, D., Imbeaux, N., Imrã¬å¡ek, F., Incelli, M., Innocente, M., Irishkin, P., Ivanova, Stanik, Jachmich, I., Jacobsen, S., Jacquet, A. S., Jansons, P., Jardin, J., Jã¤rvinen, A., Jaulmes, A., Jednorã³g, F., Jenkins, S., Jeong, I., Jepu, C., Joffrin, I., Johnson, E., Johnson, R., Johnston, T., Jane, Joita, Jones, L., Jones, G., Hoshino, T. T. C., Kallenbach, K. K., Kamiya, A., Kaniewski, K., Kantor, J., Kappatou, A., Karhunen, A., Karkinsky, J., Karnowska, D., Kaufman, I., Kaveney, M., Kazakov, G., Kazantzidis, Y., Keeling, V., Keenan, D. L., Keep, T., Kempenaars, J., Kennedy, M., Kenny, C., Kent, D., Kent, J., Khilkevich, O. N., Kim, E., Kim, H. T., Kinch, H. S., King, A., King, C., King, D., Kinna, R. F., Kiptily, D. J., Kirk, V., Kirov, A., Kirschner, K., Kizane, A., Klepper, G., Klix, C., Knight, A., Knipe, P., Knott, S. J., Kobuchi, S., Kã¶chl, T., Kocsis, F., Kodeli, G., Kogan, I., Kogut, L., Koivuranta, D., Kominis, S., Kã¶ppen, Y., Kos, M., Koskela, B., Koslowski, T., Koubiti, H. R., Kovari, M., Kowalska, Strzè©ciwilk, Krasilnikov, E., Krasilnikov, A., Krawczyk, V., Kresina, N., Krieger, M., Krivska, K., Kruezi, A., Ksiaå¼ek, U., Kukushkin, I., Kundu, A., Kurki, Suonio, Kwak, T., Kwiatkowski, S., Kwon, R., Laguardia, O. J., Lahtinen, L., Laing, A., Lam, A., Lambertz, N., Lane, H. T., Lang, C., Lanthaler, P. T., Lapins, S., Lasa, J., Last, A., Łaszyå„ska, J. R., Lawless, E., Lawson, R., Lawson, A., Lazaros, K. D., Lazzaro, A., Leddy, E., Lee, J., Lefebvre, S., Leggate, X., Lehmann, H. J., Lehnen, J., Leichtle, M., Leichuer, D., Leipold, P., Lengar, F., Lennholm, I., Lerche, M., Lescinskis, E., Lesnoj, A., Letellier, S., Leyland, E., Leysen, M., Li, W., Liang, L., Likonen, Y., Linke, J., Linsmeier, J., Lipschultz, C. h., Liu, B., Liu, G., Schiavo, Lo, Loarer, V. P., Loarte, T., Lobel, A., Lomanowski, R. C., Lomas, B., Lã¶nnroth, P. J., Lã³pez, J., J. M., Lã³pez, Razola, Lorenzini, J., Losada, R., Lovell, U., Loving, J. J., Lowry, A. B., Luce, C., Lucock, T., Lukin, R. M. A., Luna, A., Lungaroni, C., Lungu, M., Lungu, C. P., Lunniss, M., Lupelli, A., Lyssoivan, I., Macdonald, A., Macheta, N., Maczewa, P., Magesh, K., Maget, B., Maggi, P., Maier, C., Mailloux, H., Makkonen, J., Makwana, T., Malaquias, R., Malizia, A., Manas, A., Manning, P., Manso, A., Mantica, M. E., Mantsinen, P., Manzanares, M., Maquet, A., Marandet, P. h., Marcenko, Y., Marchetto, N., Marchuk, C., Marinelli, O., Marinucci, M., Markoviä, M., Marocco, T., Marot, D., Marren, L., Marshal, C. A., Martin, R., Martin, A., Martìn De Aguilera, Martã¬nez, A., F. J., Martã¬n, Solã¬s, Martynova, J. R., Maruyama, Y., Masiello, S., Maslov, A., Matejcik, M., Mattei, S., Matthews, M., Maviglia, G. F., Mayer, F., Mayoral, M., M. L., May, Smith, Mazon, T., Mazzotta, D., Mcadams, C., Mccarthy, R., Mcclements, P. J., Mccormack, K. G., Mccullen, O., Mcdonald, P. A., Mcintosh, D., Mckean, S., Mckehon, R., Meadows, J., Meakins, R. C., Medina, A., Medland, F., Medley, M., Meigh, S., Meigs, S., Meisl, A. G., Meitner, G., Meneses, S., Menmuir, L., Mergia, S., Merrigan, K., Mertens, I. R., Meshchaninov, P. h., Messiaen, S., Meyer, A., Mianowski, H., Michling, S., Middleton, Gear, Miettunen, D., Militello, J., Militello, Asp, Miloshevsky, E., Mink, G., Minucci, F., Miyoshi, S., Mlynã¡å™, Y., Molina, J., Monakhov, D., Moneti, I., Mooney, M., Moradi, R., Mordijck, S., Moreira, S., Moreno, L., Moro, R., Morris, F., Morris, A. W., Moser, J., Mosher, L., Moulton, S., Murari, D., Muraro, A., Murphy, A., Asakura, S., N. N., Na, Nabais, Y. S., Naish, F., Nakano, R., Nardon, T., Naulin, E., Nave, V., Nedzelski, M. F. F., Nemtsev, I., Nespoli, G., Neto, F., Neu, A., Neverov, R., Newman, V. S., Nicholls, M., Nicolas, K. J., Nielsen, T., Nielsen, A. H., Nilsson, P., Nishijima, E., Noble, D., Nocente, C., Nodwell, M., Nordlund, D., Nordman, K., Nouailletas, H., Nunes, R., Oberkofler, I., Odupitan, M., Ogawa, T., O'Gorman, M. T., Okabayashi, T., Olney, M., Omolayo, R., O'Mullane, O., Ongena, M., Orsitto, J., Orszagh, F., Oswuigwe, J., Otin, B. I., Owen, R., Paccagnella, A., Pace, R., Pacella, N., Packer, D., Page, L. W., Pajuste, A., Palazzo, E., Pamela, S., Panja, S., Papp, S., Paprok, P., Parail, R., Park, V., Parra, Diaz, Parsons, F., Pasqualotto, M., Patel, R., Pathak, A., Paton, S., Patten, D., Pau, H., Pawelec, A., Paz, Soldan, Peackoc, C., Pearson, A., Pehkonen, I. J., Peluso, S. P., Penot, E., Pereira, C., Pereira, A., Pereira, Puglia, P. P., Perez Von Thun, Peruzzo, C., Peschanyi, S., Peterka, S., Petersson, M., Petravich, P., Petre, G., Petrella, A., Petrå¾ilka, N., Peysson, V., Pfefferlã©, Y., Philipps, D., Pillon, V., Pintsuk, M., Piovesan, G., Pires Dos Reis, Piron, Lidia, Pironti, A., Pisano, F., Pitts, R., Pizzo, F., Plyusnin, V., Pomaro, N., Pompilian, O. G., Pool, P. J., Popovichev, S., Porfiri, M. T., Porosnicu, C., Porton, M., Possnert, G., Potzel, S., Powell, T., Pozzi, J., Prajapati, V., Prakash, R., Prestopino, G., Price, D., Price, M., Price, R., Prior, P., Proudfoot, R., Pucella, G., Puglia, P., Puiatti, M. E., Pulley, D., Purahoo, K., Pã¼tterich, T. h., Rachlew, E., Rack, M., Ragona, R., Rainford, M. S. J., Rakha, A., Ramogida, G., Ranjan, S., Rapson, C. J., Rasmussen, J. J., Rathod, K., Rattã¡, G., Ratynskaia, S., Ravera, G., Rayner, C., Rebai, M., Reece, D., Reed, A., Rã©fy, D., Regan, B., Regaã±a, J., Reich, M., Reid, N., Reimold, F., Reinhart, M., Reinke, M., Reiser, D., Rendell, D., Reux, C., Reyes, Cortes, Reynolds, S. D. A., Riccardo, S., Richardson, V., Riddle, N., Rigamonti, K., Rimini, D., Risner, F. G., Riva, J., Roach, M., Robins, C., Robinson, R. J., Robinson, S. A., Robson, T., Roccella, D. W., Rodionov, R., Rodrigues, R., Rodriguez, P., Rohde, J., Romanelli, V., Romanelli, F., Romanelli, M., Romazanov, S., Rowe, J., Rubel, S., Rubinacci, M., Rubino, G., Ruchko, G., Ruiz, L., Ruset, M., Rzadkiewicz, C., Saarelma, J., Sabot, S., Safi, R., Sagar, E., Saibene, P., Saint, Laurent, Salewski, F., Salmi, M., Salmon, A., Salzedas, R., Samaddar, F., Samm, D., Sandiford, U., Santa, D., Santala, P., Santos, M. I. K., Santucci, B., Sartori, A., Sartori, F., Sauter, R., Scannell, O., Schlummer, R., Schmid, T., Schmidt, K., Schmuck, V., Schneider, S., Schã¶pf, M., Schwã¶rer, K., Scott, D., Sergienko, S. D., Sertoli, G., Shabbir, M., Sharapov, A., Shaw, S. E., Shaw, A., Sheikh, R., Shepherd, H., Shevelev, A., Shumack, A., Sias, A., Sibbald, G., Sieglin, M., Silburn, B., Silva, S., Silva, A., Simmons, C., Simpson, P. A., Simpson, Hutchinson, Sinha, J., Sipilã¤, A., Sips, S. K., Sirã©n, A. C. C., Sirinelli, P., Sjã¶strand, A., Skiba, H., Skilton, M., Slabkowska, R., Slade, K., Smith, B., Smith, N., Smith, P. G., Smith, R., Smithies, T. J., Snoj, M., Soare, L., Solano, S., Somers, E. R., Sommariva, A., Sonato, C., Piergiorgio, Sopplesa, Sousa, A., Sozzi, J., Spagnolo, C., Silvia, Spelzini, Spineanu, T., Stables, F., Stamatelatos, G., Stamp, I., Staniec, M. F., Stankå«nas, P., Stan, Sion, Stead, C., Stefanikova, M. J., Stepanov, E., Stephen, I., Stephen, A. V., Stevens, M., Stevens, A., Strachan, B. D., Strand, J., Strauss, P., Strã¶m, H. R., Stubbs, P., Studholme, G., Subba, W., Summers, F., Svensson, H. P., Åšwiderski, J., Szabolics, Å. ., Szawlowski, T., Szepesi, M., Suzuki, G., Tã¡l, T. T., Tala, B., Talbot, T., Talebzadeh, A. R., Taliercio, S., Cesare, Tamain, Tame, P., Tang, C., Tardocchi, W., Taroni, M., Taylor, L., Taylor, D., Tegnered, K. A., Telesca, D., Teplova, G., Terranova, N., David, Testa, Tholerus, D., Thomas, E., Thomas, J., Thomas, J. D., Thompson, P., Thompson, A., Thompson, C. A., Thorne, V. K., Thornton, L., Thrysã¸e, A., Tigwell, A. S., Tipton, P. A., Tiseanu, N., Tojo, I., Tokitani, H., Tolias, M., Tomeå¡, P., Tonner, M., Towndrow, P., Trimble, M., Tripsky, P., Tsalas, M., Tsavalas, M., Tskhakaya, Jun, Turner, D., Turner, I., Turnyanskiy, M. M., Tvalashvili, M., Tyrrell, G., Uccello, S. G. J., Abidin, Ul, Uljanovs, Z., Ulyatt, J., Urano, D., Uytdenhouwen, H., Vadgama, I., Valcarcel, A. P., Valentinuzzi, D., Valisa, M., Vallejos, Olivares, Valovic, P., Van De Mortel, Van, Eester, Van, Renterghem, Van, Rooij, Varje, G. J., Varoutis, J., Vartanian, S., Vasava, S., Vasilopoulou, K., Vega, T., Verdoolaege, J., Verhoeven, G., Verona, R., Verona, Rinati, Veshchev, G., Vianello, E., Vicente, N., Viezzer, J., Villari, E., Villone, S., Vincenzi, F., Pietro, Vinyar, Viola, I., Vitins, B., Vizvary, A., Vlad, Z., Voitsekhovitch, M., Vondrã¡äek, I., Vora, P., Vu, N., Pires De Sa, Wakeling, W. W., Waldon, B., Walkden, C. W. F., Walker, N., Walker, M., Walsh, R., Wang, M., Wang, E., Warder, N., Warren, S., Waterhouse, R. J., Watkins, J., Watts, N. W., Wauters, C., Weckmann, T., Weiland, A., Weisen, J., Weiszflog, H., Wellstood, M., West, C., Wheatley, A. T., Whetham, M. R., Whitehead, S., Whitehead, A. M., Widdowson, B. D., Wiesen, A. M., Wilkinson, S., Williams, J., Wilson, M., Wilson, A. R., Wilson, D. J., Wilson, H. R., Wischmeier, J., Withenshaw, M., Withycombe, G., Witts, A., Wood, D. M., Wood, D., Woodley, R., Wray, C., Wright, S., Wright, J., J. C., Wu, Wukitch, J., Wynn, S., Xu, A., Yadikin, T., Yanling, D., Yao, W., Yavorskij, L., Yoo, V., Young, M. G., Young, C., Young, D., Young, I. D., Zacks, R., Zagorski, J., Zaitsev, R., Zanino, F. S., Zarins, R., Zastrow, A., Zerbini, K. D., Zhang, M., Zhou, W., Zilli, Y., Zoita, E., Zoletnik, V., Zychor, S., I, JET Contributors, Salewski, M, Nocente, M, Jacobsen, A, Binda, F, Cazzaniga, C, Ericsson, G, Eriksson, J, Gorini, G, Hellesen, C, Hjalmarsson, A, Kiptily, V, Koskela, T, Korsholm, S, Kurki Suonio, T, Leipold, F, Madsen, J, Moseev, D, Nielsen, S, Rasmussen, J, Schneider, M, Sharapov, S, Stejner, M, and Tardocchi, M

Subjects
Nuclear and High Energy Physics, gamma-ray spectrometry, Neutron emission, Fluids & Plasmas, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, 01 natural sciences, 7. Clean energy, Atomic, 010305 fluids & plasmas, Ion, Nuclear physics, Particle and Plasma Physics, Physics::Plasma Physics, 0103 physical sciences, fast ion, γ-ray spectrometry, Neutron, Nuclear, Emission spectrum, fast ions, 010306 general physics, Nuclear Experiment, tokamak, Nuclear and High Energy Physic, Physics, Jet (fluid), Neutron stimulated emission computed tomography, Gamma ray, Molecular, neutron emission spectrometry, velocity-space tomography, Condensed Matter Physics, Physics::Accelerator Physics, Atomic physics, Ion cyclotron resonance
Abstract

© 2017 Technical University of Denmark. We demonstrate the measurement of a 2D MeV-range ion velocity distribution function by velocity-space tomography at JET. Deuterium ions were accelerated into the MeV-range by third harmonic ion cyclotron resonance heating. We made measurements with three neutron emission spectrometers and a high-resolution γ-ray spectrometer detecting the γ-rays released in two reactions. The tomographic inversion based on these five spectra is in excellent agreement with numerical simulations with the ASCOT-RFOF and the SPOT-RFOF codes. The length of the measured fast-ion tail corroborates the prediction that very few particles are accelerated above 2 MeV due to the weak wave-particle interaction at higher energies.

Published
2017

11. Trade-offs around the use of biomass for livestock feed and soil cover in dairy farms in the Alaotra lake region of Madagascar. Special Issue: Biomass use trade-offs in cereal cropping systems: Lessons and implications from the developing world

Author

Naudin, K., Bruelle, G., Salgado, P., Penot, E., Lubbers, M.T.M.H., de Ridder, N., and Giller, K.E.

Subjects
zero-tillage, conservation agriculture, productivity, south-asia, Plant Production Systems, africa, Plantaardige Productiesystemen, residue, rice, cropping systems, physical-properties, PE&RC, maize
Abstract

Conservation agriculture (CA) is promoted as a promising technology to stabilize or improve crop yields in Africa and Madagascar. However, small-scale farmers face difficulties to retain soil cover, mainly because of competing uses for the biomass produced, especially to feed cattle. To explore the relation between dairy production and CA we developed an optimisation model at farm level. Our aim was to explore trade-offs between CA practices and the size of dairy cow herds. Our model includes three main components: the farm, the crops and the cattle herd. The optimisation was made on the total net income for three years. Biomass produced by cropping activities can either serve as mulch or to feed cows. We applied a constraint on the minimum soil cover % to keep at the end of each year for CA fields: from 30% to 95%. We simulated two scenarios of milk market: a small milk market with low forage price and an open milk market scenario with higher price of forage. Three prototypes of farms were simulated with different proportion and size of four kinds of field. These three prototypes were: medium-sized farm with hillsides dominating, medium-sized farm with paddy fields dominating and small-sized farm with hillsides. Changing the degree of soil cover to be retained on CA plots did not significantly modify the total net farm income. It was more strongly influenced by the characteristics of the milk market. In case of a limited milk market it was not profitable to have more than seven cows because the expenses were not compensated by animal production. When setting minimum soil cover to 30% then all of the simulated results include biomass coming from CA cropping system even with 12 cows/farm. Conversely when setting this constraint to 95%, above 6/7 cows/farm forage come only from conventional fields. In all of the situations simulated even with 6 cows, with the current and twice the price for forage, it was possible to keep at least 50% of soil cover on 30–60% of the total farm area. CA was not feasible for farms with no irrigated paddy fields or when forage fetched a high price regardless of the constraint for % of soil cover to be kept on CA fields. Overall, CA systems can be beneficial for dairy cow farmers due to the forage produced, although the milk market and thus the value of biomass for forage, has a strong influence on CA practice at field level.

Published
2015

12. Use of relevant economic indicators for the evaluation of farming systems in terms of viability, resilience, vulnerability and sustainability: the case of the Lake Alaotra region in Madagascar

Author

Penot, E., Bar, M., David-Benz, H., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Centre d'Études et de Recherches sur le Développement International (CERDI), Université d'Auvergne - Clermont-Ferrand I (UdA)-Centre National de la Recherche Scientifique (CNRS), Marchés, Organisations, Institutions et Stratégies d'Acteurs (UMR MOISA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), and Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)

Subjects
[SDE]Environmental Sciences
Abstract

The WAW initiative (World Agricultures Watch) intends to elaborate a worldwide observatory collecting information on agriculture in different countries and its evolution. Madagascar has been chosen as one of the pilot countries. The geographical area of the study which has been chosen is the lake Alaotra. The study of the notions of vulnerability, resilience, durability and viability has been the main point concerning the choice, the calculation and the analysis of the necessary indicators leading to the elaboration of the observatory. Three different data lines have been chosen: i) The database from the ROR, with annual data from 2005 to 2008 for 500 households ii) The database from the agricultural diagnosis BV-Lac in 2007 (110 farms) and iii) The database from RFR, with 48 farms in 2009 . This paper presents some results with farming systems modeling using the two databases from the BV-lac development project showing the indicators used through the example of a technical change with adoption of conservation agriculture.

Published
2013

13. When Madagascar produced natural rubber: a brief, forgotten yet informative history

Author

Danthu, P., Razakamanarivo, H., Razafy Fara, L., Montagne, P., Deville-Danthu, B., Penot, E., Gestion des forêts malgaches et de leur biodiversité (URP 70 Forêts et biodiversité), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université d'Antananarivo-FOFIFA, ESSA Forêts, Université d'Antananarivo, Biens et services des écosystèmes forestiers tropicaux : l'enjeu du changement global (Cirad-Es-UPR 105 BSEF), Département Environnements et Sociétés (Cirad-ES), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Gestion des forêts malgaches et de leur biodiversité (URP Forêts et biodiversité), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université d'Antananarivo-Centre National de Recherche Appliquée au Développement Rural (FOFIFA), Biens et services des écosystèmes forestiers tropicaux : l'enjeu du changement global (UPR BSEF), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Ranoarisoa, Mahafaka Karen

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences
Abstract

From 1891 to 1914, Madagascar, like other western African countries, was a production zone for forest rubber destined for export to Europe when Asian plantations where not yet sufficiently developed . Numerous species endemic to the forests of the three major Malagasy ecosystems were exploited, often with a view to maximising short term productivity without any consideration for the sustainable management of the resource. This episode represents one of the first cases of industrial exploitation of Madagascar's biological resources. Although Madagascar occupies a modest position on the world rubber market at that time, the exploitation of rubber bore major consequences for the island's forestry resources and, moreover, influenced the vision and discourse of scientists and politicians concerning their management. It was one of the factors triggering awareness of the value of Madagascar's biodiversity and the threat to which it might be exposed through poorly-controlled human activity. As a result, highly repressive and forcible legislation was introduced aimed at containing the activity practiced by local populations considered to be mostly to blame. But from the early days of French colonial rule, naturalists judged the outcomes of political decisions too weak to offer any guarantee of an effective defence. They responded by adopting an intentionally alarmist and catastrophist discourse with the object of provoking a reaction from the politicians, considered too lax. This discourse, in fact, took an about-turn from 1942-45 when the war effort led to a revitalisation of the Malagasy rubber sector as Asian production was mainly out of reach. A second consequence came in 1927 with the creation of a network of protected areas managed by naturalists, making Madagascar at that time, a pioneer in Africa. There was a simultaneous flurry of activity to promote the domestication of Malagasy rubber species, combined with the introduction of new species with high potential (Hevea brasiliensis, Castilloa elastica). However, with the emergence of far more profitable Asian rubber, all attempts at cultivation in Madagascar were abandoned when exploitation ceased to be profitable, and thus the Malagasy forests were redeemed. This episode demonstrates how it was in fact economic reality, by condemning an unprofitable sector, that was the real vehicle by which the survival of Malagasy rubber species was secured, and not the naturalists' discourse, nor the creation of protected zones, nor the promulgation of repressive legislations. This case study is of more than purely historical interest, in that it still has currency where, for example, the exploitation of Prunus africana is concerned.

Published
2013

14. Modeling impact of Conservation Agriculture adoption on farming systems agricultural incomes. The case of lake Alaotra Region, Madagascar

Author

Penot, E., Macdowan, C., Poletti, S., Domas, R., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), ISARA/Lyon, ISARA, École nationale supérieure agronomique de Toulouse [ENSAT], BRL Madagascar, BRL, Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), ISARA-Lyon, and Ranoarisoa, Mahafaka Karen

Subjects
[SDE] Environmental Sciences, E14 - Économie et politique du développement, F08 - Systèmes et modes de culture, E16 - Économie de la production, [SDE]Environmental Sciences
Abstract

Conservation Agriculture (CA) was introduced at the lake Alaotra, in Madagascar, in the 2000's in a context of traditionnal mining upland agriculture and silting-up of lowlands rice fields. Land tenure pressure linked to the attractiveness of the area lead to the progressive colonization of surrounding upland hills (Tanety), very sensitive to erosion. Conservation agriculture tackles with a double challenges: i) maintain and/or increase household income and ii) preserve natural resources through sustainable agricultural practices in the long term. This paper assesses the economic impact of CA adoption on farmers's income trough modeling representative farms selected according to a local typology, based on the last 5 years with a prospective analysis for the next 5 years. The BV-lac Project Field database highlighted a light increase of yield according to the age of CA systems. A buffering effect on climate hazards has been as well identified trough production stability over the years leading to adoption as part of a risk limiting strategy. Elements of the CA techniques are adopted spontaneously within surrounding farming systems leading to improvment of conventionnal tillage based systems. Smallholders agricultural practices evolution displays a high capacity for innovation. Modeling with a dedidated tool (Olympe is a budget analysis oriented tool) has highlighted that CA systems improve significantly net farm income in the midterm (5 to 10 years) and gross margin at plot scale. For farm holdings with few irrigated rice fields, mainly relying on upland agriculture, CA systems increase farming systems resilience to climatic events and price volatility as well as sustainable agricultural practices maintaining local and fragile ressources.

Published
2012

15. Use of relevant economical indicators for the evaluation of farming systems in terms of resilience, vulnerability and sustainability: the case of the Lake Alaotra region in Madagascar

Author

Penot, E., Bar, M., David-Benz, H., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Centre d'Études et de Recherches sur le Développement International (CERDI), Université d'Auvergne - Clermont-Ferrand I (UdA)-Centre National de la Recherche Scientifique (CNRS), Marchés, Organisations, Institutions et Stratégies d'Acteurs (UMR MOISA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), and Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)

Subjects
[SDE]Environmental Sciences
Abstract

The project Observatory for World Agricultures wants to elaborate a worldwide observatory collecting information on agriculture in different countries and its evolution. At the moment five countries have been chosen as countries of reference, Madagascar is one of them. The geographical area of the study which has been chosen is the lake Alaotra. The study of the notions of vulnerability, resilience, durability and viability has been the main point concerning the choice, the calculation and the analysis of the necessary indicators leading to the elaboration of the observatory. Three different data lines have been chosen : i) The database from the ROR, ii) The database from RFR and iii) The database from the agricultural diagnosis Bv-Lac (Durand, Nave & Penot). This paper presents some results with farming systems modeling using the two databases from the BVlac development project showing the indicators used through the example of a technical change with adoption of conservation agriculture.

Published
2012

16. Striga asiatica : a driving-force for dissemination of conservation agriculture systems based on Stylosanthes guianensis in Madagascar

Author

Michellon, R., Husson, O., Moussa, N., Randrianjafizanaka, M. T., Naudin, K., Letourmy, P., Andrianaivo, A. P., Rakotondramanana, R., Raveloarijaona, N., Enjalric, F., Penot, E., Séguy, L., Systèmes de Cultures Annuelles (UPR 102 SCA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), ONG TAFA (Tany sy Fampandrosoana), ONG TAFA, BP 266, 110, Antsirabe, Madagascar, Systèmes de culture et rizicultures durables (URP SCRID), Institut de Recherche pour le Développement (IRD)-Université d'Antananarivo-Africa Rice Center (AfricaRice)-FOFIFA-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Consultative Group on International Agricultural Research [CGIAR], GSDM, GSDM Madagascar, FAFIALA, CVS, Tsivatrinikamo, Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Ranoarisoa, Mahafaka Karen, Systèmes de Cultures Annuelles (UPR SCA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université d'Antananarivo-Centre National de Recherche Appliquée au Développement Rural (FOFIFA)-Consultative Group on International Agricultural Research [CGIAR] (CGIAR)-Africa Rice Center [Côte d'Ivoire] (AfricaRice), Consultative Group on International Agricultural Research [CGIAR] (CGIAR), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDE] Environmental Sciences, F08 - Systèmes et modes de culture, Striga asiatica, Oryza sativa, Stylosanthes guianensis, Zea mays, Culture sous couvert végétal, [SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

17. The real adoption of conservation agriculture (ca) in the lake alaotra area after 10 years of diffusion

Author

Penot, E., Fabre, J., Domas, R., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), BRL Madagascar, BRL, Ranoarisoa, Mahafaka Karen, Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDE] Environmental Sciences, agriculture alternative, F08 - Systèmes et modes de culture, [SDE]Environmental Sciences, E14 - Economie et politique du développement, Adoption de l'innovation
Published
2011

18. Farming system modelling and Conservation Agriculture (CA) adoption: intensification, risks, resilience and strategies: an example in the Lake Alaotra in Madagascar

Author

Penot, E., Bar, M., Benz, M., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Marchés, Organisations, Institutions et Stratégies d'Acteurs (UMR MOISA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Ranoarisoa, Mahafaka Karen, Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), and Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences
Published
2011

19. Evolution of conservation agriculture (ca) cropping systems on uplands in the lake alaotra area since 2003

Author

Penot, E., Harisoa, B., Domas, R., Rakotondravelo, J.C., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), ESSA, Université d'Antananarivo, BRL Madagascar, BRL, Ranoarisoa, Mahafaka Karen, Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

20. The Farming system modelling and Conservation Agriculture (CA) adoption: intensification, risks, resilience and strategies: an example in the Lake Alaotra in Madagascar

Author

Penot, E., Bar, M., Benz, M., Domas, R., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Marchés, Organisations, Institutions et Stratégies d'Acteurs (UMR MOISA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), BRL Madagascar, BRL, Ranoarisoa, Mahafaka Karen, Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), and Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)

Subjects
L01 - Elevage - Considérations générales, [SDE] Environmental Sciences, Manihot esculenta, F08 - Systèmes et modes de culture, Adoption de l'innovation, Élevage, agriculture alternative, E16 - Economie de la production, Arachis hypogaea, [SDE]Environmental Sciences, E14 - Economie et politique du développement, Système de culture, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

21. Assessment of tradeoffs for biomass uses between livestock and soil cover at farm level

Author

Naudin, K., Bruelle, G., Salgado, P., Penot, E., Scopel, E., Lubbers, M., De Ridder, N., Giller, K. E., Systèmes de Cultures Annuelles (UPR SCA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Centre National de Recherche Appliquée au Développement Rural (FOFIFA), Systèmes d'élevage méditerranéens et tropicaux (UMR SELMET), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Plant Production Systems, Wageningen University and Research [Wageningen] (WUR), Systèmes de Cultures Annuelles (UPR 102 SCA), FOFIFA, Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Wageningen University and Research Centre [Wageningen] (WUR), and Ranoarisoa, Mahafaka Karen

Subjects
[SDE] Environmental Sciences, L02 - Alimentation animale, Intégration, U10 - Informatique, mathématiques et statistiques, Modélisation des cultures, Exploitation agricole familiale, F08 - Systèmes et modes de culture, Aliment pour animaux, agriculture alternative, Culture sous couvert végétal, Polyculture élevage, Biomasse, [SDE]Environmental Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

22. CA2Africa: conservation agriculture in Africa: analysing and foreseeing its impact - comprehending its adoption

Author

Corbeels, M., Schuler, J., Ndah, H.T., Uthes, S., Zander, P., Apina, T., Koala, S., Triomphe, B., El Mourid, M., Traore, K., Nyagumbo, I., Mrabet, R., Penot, E., Gomez-MacPherson, H., de Graaff, J., and Tittonell, P.A.

Subjects
F08 - Systèmes et modes de culture, Leerstoelgroep Land degradatie en ontwikkeling, PE&RC, agriculture alternative, Plant Production Systems, E14 - Économie et politique du développement, Plantaardige Productiesystemen, Life Science, Land Degradation and Development
Abstract

Conservation Agriculture (CA) is increasingly promoted in Africa as an alternative for coping with the need to increase food production on the basis of more sustainable farming practices. CA is specifically seen as a way to address the problems of soil degradation resulting from agricultural practices that deplete the organic matter and nutrient content of the soil. It aims at higher crop yields and lower production costs. Yet, success with adopting CA on farms in Africa has been limited. 'Conservation Agriculture to Africa' (CA2Africa) is a European Commission-funded project (www. ca2africa.eu) seeking to understand why CA techniques have not been adopted widely throughout Africa. The objective of the project is to examine the agronomic, agro-ecological, socio-economic and institutional conditions that determine success or failure of CA. It brings together the major research players involved with CA in Africa to share, assess and learn together with practitioners from past and ongoing experiences on CA in five regions across Africa on the basis of selected case studies: Eastern Africa (Kenya/Tanzania); Southern Africa (Zimbabwe/Malawi/Zambia); Western Africa (Burkina-Faso/Benin); Northern Africa (Morocco/Tunisia) and Madagascar. CA is analysed and understood using a conceptual framework that distinguishes three scales of analysis: field, farm/village and regional scale. The relative importance of the different determinants of adoption operating at each scale is determined for each case study and guides the assessments and type of analysis. From a biophysical, technical point of view, crop/soil models are used to assess the performance of CA at field scale. At farm and village scales, trade-offs in the allocation of resources become important in determining how CA may fit into a given agroecosystem. Trade-off analysis is done using bio-economic household models. At a regional scale, a qualitative expert assessment tool kit has been developed to determine the specific regional socio-economic, cultural and institutional settings that determine adoption of CA. This contribution will present the overall project philosophy, its conceptual and methodological approaches as well as results from testing selected modelling tools for selected case studies across Africa. These results show the importance of different driving forces and inhibiting forces for CA adoption.

Published
2011

23. Prototyping rotation and association with cover crop and no till

Author

Naudin, K., Scopel, E., Husson, O., Auzoux, S., Penot, E., Giller, K. E., Systèmes de Cultures Annuelles (UPR 102 SCA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Systèmes de semis direct sous couverture végétal-GSDM (UPR1 Couverts permanents), Systèmes de semis direct sous couverture végétale (Cirad-CA-UPR 1 Couverts permanents), Département Cultures annuelles (CA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Département Cultures annuelles (CA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Plant Production Systems,Wageningen University, Wageningen University and Research Centre [Wageningen] (WUR), Ranoarisoa, Mahafaka Karen, Systèmes de Cultures Annuelles (UPR SCA), Systèmes de semis direct sous couverture végétale (UPR 1 Couverts permanents), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Wageningen University and Research [Wageningen] (WUR)

Subjects
[SDE] Environmental Sciences, F07 - Façons culturales, Rotation culturale, U10 - Informatique, mathématiques et statistiques, F08 - Systèmes et modes de culture, Modèle de simulation, Non-travail du sol, Plante de couverture, [SDE]Environmental Sciences, Choix des espèces, Système de culture, système d'aide à la décision, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

24. Socio-economic diagnosis of a small region using an economic farming system modeling tool (Olympe). An approach from household to landscape scales to assist decision making processes for development projects supporting conservation agriculture in Madagascar

Author

Penot, E., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDE]Environmental Sciences
Abstract

Two agricultural development projects based on conservation agriculture and agriculture/livestock integration are implemented in Madagascar with both a "watershed approach" and a "farming system approach": the BV-lac project in the area of Lake Alaotra and the BVPI-SEHP project in Vakinankaratra (Central highlands) and South-East. A farming systems reference monitoring network (FSRMN) has been set up with two objectives: i) to help the project in decision making processes for choosing appropriate technologies that will be developed according to a farmer's typology using prospective analysis, ii) to monitor the project's economical impact in the short and medium term. The farming system modelling approach is based on a software developed by INRA-CIRAD-IAMM ("Olympe", JM Attonaty, INRA), The approach is based on partnership (smallholder, farmers' organizations, project operators and local administration), farming system analysis, and modelling for a Decision Support Systems (DSS) project orientation. Adoption of conservation agriculture (CA) represents both a real change of paradigm for local farmers and a real challenge for agriculture and natural resources sustainability.

Published
2010

25. Dissemination of direct seeding mulch-based cropping systems in Madagascar

Author

Penot, E., Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), and Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)

Subjects
[SDE]Environmental Sciences
Abstract

In the mid-altitude zones of Madagascar, cropping systems based on direct seeding, with a cover crop and crop rotation, have been disseminated on smallholdings since the turn of the century with a degree of success. In order to disseminate these new cropping patterns, CIRAD and its development partners in Madagascar have developed modelling tools to monitor and assess activities through a DSS (Decision Support System). For developers, these tools provide decision-support in the technological choices to be implemented depending on their physical environment and their type of farm. In agricultural development projects, decision-support and negotiation between operators and with farmers is a priority, so that actions live on after the end of the project. CIRAD is endeavouring to optimize extension efforts by proposing techniques and services that are truly adapted to each type of farmer. This type of initiative is being implemented as part of development projects in the regions of Lake Alaotra (BV-lac project, Lake Alaotra watersheds), Vakinankaratra and southeastern coast (BVPI-SE/HP project). The aim is to adapt technical and organizational messages to farmer realities and promote innovation processes including direct seeding mulch based cropping systems (DMC) for sustainable production as well as the integration of agriculture and animal production. A selfappraisal method for farmers'groups and a network of reference farms have been developed. These tools can also be used to assess technical actions and provide support in defining aspects of public agricultural development policy. CIRAD proposes self-appraisal sessions where farmers in producer organizations themselves identify innovation processes adapted to them, using the "Accelerated Propagation of Innovation" (API) method (Belloncles). The method requires prior coaching of the participants so that they can give thought to a situation then act appropriately. This prior coaching is provided by socio-organization specialists. At Lake Alaotra, CIRAD used the API method with associations of irrigation water users, the federation of user associations in the network of the two irrigated areas: "PC15" and "Marianina Valley", as wall as with agricultural intensification groups and farmer groups integrating DMC practices. The transmission of technical information within the farmer groups applying DMC was a frank success. The analysis identified how DMC techniques are effectively adopted and revealed a potential will to increase intensification from the 4th or 5th year of DMC. The development project partners thereby acquired experience in organizing and running these sessions. The method has been formalized in the form of a BV-lac working document available from CIRAD. New cropping systems are assessed in networks of reference farms. A network of reference farms is a set of farms representative of different agricultural and socio-economic situations. The farms are monitored annually, to measure the impact of technical actions and development policies and carry out prospective analyses. Olympe software is a tool developed by CIRAD, INRA and IAMM (Mediterranean Agricultural Institute in Montpellier) to simulate farm activities. It can be used to test the robustness of a technical choice, and farm's resilience when faced with a series of hazards. Simulations of the adoption of new techniques are carried out with standard crop management patterns that provide reliable data over a large number of plots through prospective analysis. Applying this approach to the adoption of direct-seeding mulch-based cropping systems at Lake Alaotra helped development operators to make progress in their work. Consequently, the technical possibilities offered to famers have become more adapted to the constraints faced by different types of farms. In particular, the levels of cropping system intensification proposed are more adapted to risk levels acceptable to producers.

Published
2010

26. How cropping and farming system modelling can help the extension of conservation agriculture? Case Study in Madagascar

Author

Naudin, K., Penot, E., Systèmes de Cultures Annuelles (UPR SCA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Systèmes de Cultures Annuelles (UPR 102 SCA), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Ranoarisoa, Mahafaka Karen

Subjects
[SDE] Environmental Sciences, U10 - Méthodes mathématiques et statistiques, Modélisation des cultures, F08 - Systèmes et modes de culture, [SDE]Environmental Sciences, Système de culture
Abstract

International audience; Conservation agriculture is a real alternative in some areas of Madagascar for poverty alleviation and a potential issue for local farmers to overcome climatic and economic risks. Local development projects such as BV-lac in the Lake Alaotra region promote such systems according to local constraints. These days, i.e. 2007-08 cropping season, around 2000 farmers are practising CA cropping system based on : no till permanent organic cover rotation including cover crops. The BV-lac project is currently trying to extend CA cropping system adapted to upland or paddy field. The BV Lac project is trying to enhance extension in quantity and also in quality. One of the major steps to complete this goal is to ensure that technical recommendations matches farm structure and fits smallholder' strategies, constraints and objectives. To tackle such a challenge, we propose an approach including modelling at both cropping and farming systems level. This poster aimed at presenting this approach, the modelling tools and the effective use of such tools with local development partners. Within the modelling tools there are three softwares : the couple of software PRACT/GANESH (K Naudin/SCRID) to select cropping patterns and their integration into farming systems and farming system modelling with the tool OLYMPE (Attonaty, INRA-CIRAD-IAMM). This last one is used in farming systems monitoring network. The PRACT/GANESH tools are still under construct. There are both Decision Support Systems (DSS) PRACT (Prototyping Rotation and Association with Cover crop and no Till) is a tool to generate and to evaluate crop rotations and crop sequences in DMC systems at field level. The second DSS named GANESH (Goals oriented Approach to use No till for a better Economic and environmental sustainability for SmallHolders) is at farm level and uses linear programming to optimize the cropping plan to be proposed to farmers. Olympe is an economic modelling tool on farming simulation to help individual decision-making at farm level an may be used for project to identify technologies adapted to farmers' types. Positive or negative externalities can also be integrated. Farming system modelling associated with a farm typology can therefore be used to help projects as well to test scenarios with various types of technologies in order to assess what is the right technology with the right farmer at the right time. Then, it aims to provide guidelines for agricultural and development policies for institutions or donors.

Published
2009

27. Olympe, a multiscale tool to explore management options in Agroforestry Systems

Author

Deheuvels, O., Penot, E., Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, U10 - Informatique, mathématiques et statistiques, Modélisation des cultures, F08 - Systèmes et modes de culture, Modèle de simulation, Analyse économique, Agroforesterie, Logiciel, E16 - Économie de la production, K01 - Foresterie - Considérations générales, Système de culture
Abstract

Olympe is a software developed by INRA, IAMM and CIRAD to model and simulate the functioning of cropping and farming systems. As it is based on economic analysis that considers contextual components, it enables identification and modelling of one or several farmers' strategies and trajectories. Prospective analysis is also possible, including prices volatility or climatic events and their impacts. This tool was first developed in close cooperation with research institutions involved in tropical agriculture and tested in different case studies, including agroforestry systems, in North and West Africa, Southeast Asia and Latin America, leading to a wide variety of applications. Such variety displays the richness that can be expected from reliable and representative farming systems studies at various levels. These levels go from the simple comparison between two cropping systems, through farming system modelling and further monitoring or counselling, to the study of entire irrigated schemes at regional levels, prospective analysis and elaboration of potential scenarios and role games. Such diversity in uses can be addressed to an equal diversity of actors: farmers, project or community leaders, extension institutions, researchers and policy makers.

Published
2008

28. Determinants of DMC technologies adoption among smallholders in the lake Alaotra area, Madagascar

Author

Chabierski, S., Penot, E., Husson, O., Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (UMR Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Systèmes de semis direct sous couverture végétale (UPR 1 Couverts permanents), Innovation et Développement dans l'Agriculture et l'Agro-alimentaire (Innovation), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre national d'études agronomiques des régions chaudes (CNEARC)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Systèmes de semis direct sous couverture végétale (Cirad-CA-UPR 1 Couverts permanents), Département Cultures annuelles (CA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), and Ranoarisoa, Mahafaka Karen

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences
Published
2008

30. CREATING SYNERGIES BETWEEN CONSERVATION AGRICULTURE AND CATTLE PRODUCTION IN CROP–LIVESTOCK FARMS: A STUDY CASE IN THE LAKE ALAOTRA REGION OF MADAGASCAR.

Author

ANDRIARIMALALA, J. H., RAKOTOZANDRINY, J. N., ANDRIAMANDROSO, A. L. H., PENOT, E., NAUDIN, K., DUGUÉ, P., TILLARD, E., DECRUYENAERE, V., and SALGADO, P.

Subjects
LIVESTOCK farms, FARM produce, AGRICULTURAL conservation, SOIL fertility, CATTLE, AGRICULTURAL economics, CASE studies
Abstract

Conservation agriculture (CA) has been promoted as a strategy to cope with deterioration in soil fertility, but its adoption on smallholder farms in tropical areas remains limited. In Madagascar, livestock production is facing shortages in forage especially during the dry season. The value of cover crops used in CA as livestock feed could be an incentive to make this form of agriculture more acceptable in rural areas. To do so, farmers must find a trade-off between the use of biomass from cover crops for animal production and its maintenance on the soil to meet CA's criteria. In this study, we evaluated the impact of biomass flows (cover crops and manure) between cropping and cattle production in crop–livestock farms in the Lake Alaotra region. Surveys among crop–livestock farmers were used to calculate feed concentrate and mineral fertilizer equivalents. Our results show that on average 42, 22 and 10% of biomass production (dry matter basis) of Brachiaria spp., Stylosanthes guianensis and Vicia villosa, respectively, are used for livestock feeding. The economic benefit in feed concentrate equivalent is between €73 and €723/year per farm. The use of manure contributes, just as CA, to improve soil fertility without using external fertilizing resources. The economic benefit in mineral fertilizer equivalent is between €116 and €2365/year per farm. The integration of CA and livestock production shows, beyond the agronomic advantages, an obvious economic benefit, which is essential to secure the Malagasy agricultural systems. Moreover, this economic benefit is another argument for the dissemination of CA practices in rural areas. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
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31. Current Evolution of Smallholder Rubber-Based Farming Systems in Southern Thailand.

Author

Simien, A. and Penot, E.

Subjects
*RUBBER, *AGRICULTURE, *RICE, *AGRICULTURAL diversification, *AGROFORESTRY
Abstract

Thailand is moving away from rice-based agriculture to high-value-crop agriculture, especially rubber production in southern regions. The present study reviews the five main rubber-based production systems in Phatthalung and Songkhla provinces. The investment capacity of most farms is limited and depends on fluctuations in market prices. Consequently, diversification through agroforestry practices is an adapted alternative to overcome such constraint. Conversely, smallholders who cultivate rice and rubber only receive a subsistence-level income for the family. Hence there is a clear trend among smallholders in southern Thailand to convert their farms to rubber monoculture but also strong evidence for the need for diversification in a region that is already too specialized in rubber. [ABSTRACT FROM AUTHOR]

Published
2011
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32. Rubber Agroforestry Systems (RAS) in West Kalimantan, Indonesia: An historical perspective

Author

Penot Eric and Ilahang

Subjects
Environmental sciences, GE1-350
Abstract

In 1994 in the Sanggau/Sintang area in West Kalimantan province, most farmers relied mainly on jungle rubber, an old agroforestry system based on rubber seedling with low productivity, low establishment cost and low maintenance but high biomass and biodiversity. Most farmers at that period wanted to have access to clonal rubber planting material in order to improve their productivity (rubber clones do produce 3 times more than seedlings). The CIRAD/ICRAF/IRRI project called SRAP (Smallholder Rubber Agroforestry project) has set-up in 1994 on farm trials with 60 farmers in order to optimize clonal based new RAS according to local conditions and constraints. When SRAP started (1994/2007), the original objectives were multiple: i) to provide clone and high rubber productivity, ii) to maintain agroforestry practices to profit from positive externalities, and iii) to diversify income through timber, fruits, resins (Gaharu, Damar…) and other forest products (rattan, medicinal plants, forest vegetables etc). In 1997, came in the landscape oil palm estates though the very high and rapid development of private concessions. Oil palm became in the 2000’s the main priority for most smallholders. Today, all forest and most local jungle rubber have disappeared to the profit of roughly 2/3 of the area planted with oil palm (estates and smallholder) and 1/3 with clonal rubber for smallholder, either in monoculture or agroforestry. In 2019, CIFOR/FTA program funded a mission to CIRAD to obtain information about the evolution of RAS trials plots evolution in the province of West Kalimantan. The survey provide an idea of the historical and current trend in terms of local farming strategies concerning agroforestry. It raised also the question of clonal planting material availability for replanting and the poor tapping quality that lead to a reduction of the clonal rubber lifespan. Evolution of trials status over the period1994/2019 display the following results: i) Conversion to oil palm (20 %) or to clonal rubber monoculture (20 % mainly in Trimulia in Transdmigration area), ii) with agroforestry systems maintained in RAS 1 or 2 (50 %) and iii) evolution to tembawang at the end of rubber lifespan (10 %). We are back to the same problems faced in 1994: poor access to clonal planting material, no training on tapping frequency and practices but with some knowledge on clones and AF practices. The lessons learned are the following: i) Rubber agroforestry trials came right in time in 1994, with a strong demand from farmers, ii) but oil palm came in 1997 with a very strong pressure from concession companies providing a lucrative alternative to rubber cultivation with full credit (but loss of land) and better return to labor, iii) Interest in agroforestry practices remains high for old men but no interest is witnessed from younger generation, iv) It is now time for rubber replanting but the same old story remains: poor access to planting material), v) no good tapping practices, poor technical information available). These are essential to be able to maximize tree lifespan up to 35 years long.

Published
2021
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33. A participatory breeding initiative for resilient rubber cultivation systems for smallholders in a context of global change

Author

Penot Eric, Utami Arini W., Purwestri Yekti Asih, Wibawa Gede, Aguilar Edna, Somboonsuk Buncha, Aris Mohd Nasaruddin Moh, Gay Frédéric, Widiyatno, Wijaya Thomas, Suparno Budiadi, Shinta Agustina Dwi, Chambon Bénédicte, Alam Taufan, Gitz Vincent, Subandiyah Siti, Montoro Pascal, Oktavia Fetrine, Van Noordwijk Meine, and Wu Jian-Ping

Subjects
Environmental sciences, GE1-350
Published
2021
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34. Farmers' perspectives on slash-and-burn as a land clearing method for small-scale rubber producers in Sepunggur, Jambi Province, Sumatra,Indonesia

Author

Ketterings, Q. M., van Noordwijk, M., Penot, E., and Wibowo, T. Tri

Subjects
AGRICULTURE, LAND clearing
Abstract

On September 10, 1997, Indonesian President Soeharto renewed a ban on the practice of burning forests to clear land. At that moment a thick haze caused by land-clearing related fires in Kalimantan and Sumatra, Indonesia, blanketed large parts of Indonesia, Malaysia, Singapore, Brunei, the Philippines and Thailand. These fires, aggravated by the El Niqo weather pattern and described as the worst in Southeast Asian history, renewed a long-term debate on slash-and-burn (S&B) as a method of land clearing. Acceptable alternatives to S&B should address both the problems and the benefits of the use of fire. In depth knowledge and a clear diagnosis of the problems that rise with S&B and its alternatives are needed. A social/economic/agronomic survey was therefore conducted among 37 small-scale rubber producers in Sepunggur,Jambi Province, Sumatra, Indonesia. Our objectives were to: (1) characterize S&B techniques; (2) characterize farmers' perspectives on land clearing methods related to agronomic/economic factors (soil fertility, plant growth, production); and (3) evaluate alternatives to S&Bthat would be acceptable to individual farmers at present and in thenear future. Small rubber producers (average farm size approx. 5ha)were selected because rubber gardens are the major land use type in this area, small producers are the main contributors, and most of theforest that is presently converted for agricultural use is being planted with rubber seedings. Farmers generally start slashing in March and burn in the month of August. Burning takes place in two steps: broadcast burn followed by pile-and-burn. The five advantages of using fire as mentioned by the farmers were: (1) burning creates space (51%); (2) ash acts as a fertilizer (23%); (3) burning improves soil structure enabling faster establishment of seedlings (15%); (4) burning reduces weed/tree competition (5%); and (5) burning reduces the occurrence of pests/diseases (3%). Alternatives to S&B should be economically ac [ABSTRACT FROM AUTHOR]

Published
1999
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35. "« Coffee agroforestry business-driven clusters »: an innovative social and environmental organisational model for coffee farm renovation.

Author

Meter A, Penot E, Vaast P, Etienne H, Ponçon E, and Bertrand B

Abstract

Background: Worldwide coffee production, especially Arabica coffee, is threatened by climatic change, plants diseases and vulnerability of smallholders. Meanwhile, consumers' demand for socially and environmentally sustainable products is steadily increasing, driving the engagement of stakeholders in agro-ecological and social initiatives. Here we present a new organizational model, the "Coffee agroforestry business-driven cluster" (CaFC), which aims at preserving ecosystems while offering producers a fair income. Based on an original local micro value-chain dedicated to sustainable production of high-quality Arabica coffee under agroforestry systems, the CaFC model stands out by addressing the issues around plantation renovation, a crucial process that requires considerable investments from producers. Methods: Based on a pilot project in Nicaragua, we illustrate how the operational principles of CaFC can be applied in a real setting. Using data shared by key stakeholders involved in the project, we assess the profitability of the CaFC model by comparing different scenarios and applying sensitivity analysis. We then reflect on the reproducibility of the model in other contexts, building on lessons learned from ongoing implementations in Vietnam and Cameroon. Results: For producers renovating their plantations, the CaFC model consistently outperforms other scenarios, offering high quality premiums coupled with capacity building, access to highly productive varieties that perform well under agroforestry systems and adapted credit with favourable repayment schemes. Implementation in Vietnam and Cameroon show that the model can be successfully replicated with some adaptation to local contexts. These cases also highlight the importance of mutual interests, trust and communication in enabling collaboration between stakeholders. Conclusions: The CaFC model has great potential for positive environmental and economic impact and offers strong incentives for stakeholders involved in its resulting micro value-chain. The concept was initially developed in Nicaragua for coffee but could also be adapted in other countries or even to other commodities such as cocoa., Competing Interests: No competing interests were disclosed., (Copyright: © 2023 Meter A et al.)

Published
2023
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