48 results on '"Behling, Maurel"'
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2. Genetic diversity and phenotypic characterization of Ochroma pyramidale in plantations in Mato Grosso, Brazil/Diversidade genética e caracterização fenotípica de Ochroma pyramidale em plantios no Mato Grosso, Brasil
- Author
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Zanetti, Géssica Tais, Hoogerheide, Eulalia Soler Sobreira, Rossi, Ana Aparecida Bandini, Behling, Maurel, and Pinto, Joyce Mendes Andrade
- Published
- 2023
- Full Text
- View/download PDF
3. Manual de boas práticas para o cultivo de eucalipto em Mato Grosso
- Author
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Behling, Maurel, primary, Carvalho, Marco Antonio Camillo de, additional, Langer, Jaldes, additional, and Michetti, Miqueias, additional
- Published
- 2021
- Full Text
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4. Selection and phenotypic divergence in pau de balsa of different origins
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Pecegueiro, Maicon de Souza, primary, Tiago, Auana Vicente, additional, Behling, Maurel, additional, Carvalho, Maurecilne Lemes da Silva, additional, Bendahan, Amaury Burlamaqui, additional, Santin, Julio César, additional, Zanetti, Géssica Tais, additional, and Hoogerheide, Eulalia Soler Sobreira, additional
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- 2023
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5. Transmission of photosynthetically active radiation and the productivities of soybean and maize in agroforestry systems
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Aragão, Wesley F. D. X., primary, Zolin, Cornélio A., additional, Behling, Maurel, additional, Pezzopane, José R. M., additional, Ximenes, Elen S. O. C., additional, Flumignan, Danilton L., additional, and Magalhães, Ciro A. S., additional
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- 2023
- Full Text
- View/download PDF
6. Eucalyptus Carbon Stock Research in an Integrated Livestock-Forestry System in Brazil
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Morales, Marina Moura, primary, Tonini, Hélio, additional, Behling, Maurel, additional, and Hoshide, Aaron Kinyu, additional
- Published
- 2023
- Full Text
- View/download PDF
7. Establishing mixed-species planted forests for restoration and production in Brazil
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De Moraes Gonçalves, Jose Leonardo, Bouillet, Jean-Pierre, Guillemot, Joannès, Brancalion, Pedro H.S., Teixeira Mendes, João Carlos, De Vicente Ferraz, Alexandre, Behling, Maurel, Laclau, Jean-Paul, De Moraes Gonçalves, Jose Leonardo, Bouillet, Jean-Pierre, Guillemot, Joannès, Brancalion, Pedro H.S., Teixeira Mendes, João Carlos, De Vicente Ferraz, Alexandre, Behling, Maurel, and Laclau, Jean-Paul
- Published
- 2023
8. Management of Industrial Forest Plantations
- Author
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de Moraes Gonçalves, José Leonardo, Silva, Luciana Duque, Behling, Maurel, Alvares, Clayton Alcarde, von Gadow, Klaus, Series editor, Pukkala, Timo, Series editor, Tomé, Margarida, Series editor, Borges, José G., editor, Diaz-Balteiro, Luis, editor, McDill, Marc E., editor, and Rodriguez, Luiz C.E., editor
- Published
- 2014
- Full Text
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9. Effect of thinning eucalyptus trees on soybean productivity in integrated crop-livestock-forestry systems.
- Author
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Behling, Maurel, Luiz de Souza, Andre, Lange, Anderson, Camargo, Diego, Fallgatter, Jonas, and Uvida Barreto, Gerson
- Subjects
- *
AGROFORESTRY , *CROP yields , *LEAF area index , *EUCALYPTUS , *TREES , *GRAIN yields , *TIMBERLINE , *PLANT spacing - Abstract
The aim of the study was to evaluate the effects of integrated crop-livestock-forestry (ICLF) systems and the thinning of eucalyptus trees on the agronomical performance of soybean. Treatments consisted of cultivation under: crops under full sunlight (CFS) conditions; ICLF with triple-row tree configuration (ICLFT) in which trees were submitted to selective thinning in the fifth year after planting through removal of 50% of trees while maintaining triple-row bands; and ICLF with single-row tree band configuration (ICLFS) in which the lateral rows of the triple-row tree bands were subjected to systematic thinning at the fourth year after planting. The physiological and agronomical variables of the soybean crop were evaluated at the R5 and R8 reproductive stages during the eighth harvesting season (2018/2019). Soybean sampling was carried out at five random positions in the CFS and in four transects at distances of 3, 6, 10 and 15 m from the tree bands in both the north and south faces of the ICLF systems. There were no differences between soybean grown under the ICLF and CFS systems with respect to specific leaf area, plant density, lodging index and mass of a thousand grains. However, the ICLF increased dry leaf mass and leaf area index and reduced soybean plant heights. Soybean productivity was reduced by 26% in ICLF-T and 14% in ICLF-S, that is, a 12% reduction in the productivity loss with systematic thinning. It is concluded that ICLF reduces soybean productivity in the effective grain production area of the system, regardless of the degree of thinning, although systematic thinning by removing the lateral tree lines to conversion of triple-rows into single-rows minimizes the loss of soybean grain yield. [ABSTRACT FROM AUTHOR]
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- 2023
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10. Physical characteristics of soybean cultivated under the conditions of integrated agrosystems.
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Pereira de Souza, Ícaro, Campos Botelho, Sílvia de Carvalho, Mendes Botelho, Fernando, Behling, Maurel, de Souza Magalhães, Ciro Augusto, and Alexandre Schopf, Pedro
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INTERCROPPING ,GRAIN harvesting ,CATCH crops ,ELECTRIC conductivity ,SOYBEAN ,AGRICULTURE ,CROPS - Abstract
Copyright of Revista de Ciencias Agricolas is the property of University of Narino, Faculty of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
11. Identification of sources of resistance of Passiflora rootstocks to fusariosis in areas with disease outbreaks in Mato Grosso state, Brazil/Identificacao de fontes de resistencia de porta-enxertos de Passiflora a fusariose em areas com focos da doenca em Mato Grosso, Brasil
- Author
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Silva Miguel-Wruck, Dulandula, Roncatto, Givanildo, Behling, Maurel, Oliveira Faleiro, Valeria de, Bonaldo, Solange Maria, and Tardin, Flavio Dessaune
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- 2021
- Full Text
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12. Pre-germination techniques for “faveira” in lots of different provenances as subsidy to standardization and commercialization
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Corrêa, Aparecida Juliana Martins, primary, Piña-Rodrigues, Fatima Conceição Márquez, additional, Nogueira, Lucas Alencar da Silva, additional, Silva, Ana Paula Moura da, additional, Behling, Maurel, additional, and Isernhagen, Ingo, additional
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- 2022
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13. Fine root isotropy in Eucalyptus grandis plantations. Towards the prediction of root length densities from root counts on trench walls
- Author
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Maurice, Jérôme, Laclau, Jean-Paul, Re, Danilo Scorzoni, de Moraes Gonçalves, José Leonardo, Nouvellon, Yann, Bouillet, Jean-Pierre, Stape, José Luiz, Ranger, Jacques, Behling, Maurel, and Chopart, Jean-Louis
- Published
- 2010
14. Calibration of the Pilodyn instrument for the indirect in situ determination of the basic wood density of balsa
- Author
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Pecegueiro, Maicon de Souza, primary, Hoogerheide, Eulalia Soler Sobreira, additional, Bendahan, Amaury Burlamaqui, additional, Evangelista, Wescley Viana, additional, and Behling, Maurel, additional
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- 2022
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15. Genetic diversity and phenotypic characterization of Ochroma pyramidale in plantations in Mato Grosso, Brazil.
- Author
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Tais Zanetti, Géssica, Sobreira Hoogerheide, Eulalia Soler, Bandini Rossi, Ana Aparecida, Behling, Maurel, and Andrade Pinto, Joyce Mendes
- Abstract
Copyright of Ciência Florestal (01039954) is the property of Ciencia Florestal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
16. Management of Industrial Forest Plantations
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de Moraes Gonçalves, José Leonardo, primary, Silva, Luciana Duque, additional, Behling, Maurel, additional, and Alvares, Clayton Alcarde, additional
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- 2014
- Full Text
- View/download PDF
17. Short-term effect of a crop-livestock-forestry system on soil, water and nutrient loss in the Cerrado-Amazon ecotone
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ZOLIN, Cornélio Alberto, primary, MATOS, Eduardo da Silva, additional, MAGALHÃES, Ciro Augusto de Souza, additional, PAULINO, Janaína, additional, LAL, Rattan, additional, SPERA, Sílvio Tulio, additional, and BEHLING, Maurel, additional
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- 2021
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18. Biochar Chemistry in a Weathered Tropical Soil: Kinetics of Phosphorus Sorption
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Morales, Marina Moura, primary, Comerford, Nicholas Brian, additional, Behling, Maurel, additional, de Abreu, Daniel Carneiro, additional, and Guerrini, Iraê Amaral, additional
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- 2021
- Full Text
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19. Identification of sources of resistance of Passiflora rootstocks to fusariosis in areas with disease outbreaks in Mato Grosso state, Brazil
- Author
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Miguel-Wruck, Dulândula Silva, primary, Roncatto, Givanildo, additional, Behling, Maurel, additional, Faleiro, Valeria de Oliveira, additional, Bonaldo, Solange Maria, additional, and Tardin, Flávio Dessaune, additional
- Published
- 2021
- Full Text
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20. Soil carbon stock in balsa wood after fertilization strategies
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Caravina, Sandro Marcelo, primary, Behling, Maurel, additional, Zolin, Cornélio Alberto, additional, Magalhães, Ciro Augusto de Souza, additional, Freddi, Onã da Silva, additional, Matos, Eduardo da Silva, additional, and Santin, Júlio César, additional
- Published
- 2021
- Full Text
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21. In vitro organogenesis of rangpur lime/Organogenese in vitro de limao cravo
- Author
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Soriano, Leonardo, Tavano, Eveline Carla Da Rocha, Behling, Maurel, Filho, Francisco De Assis Alves Mourao, and Mendes, Beatriz Madalena Januzzi
- Published
- 2012
22. CHARACTERIZING EDAPHOCLIMATIC VARIABLES IN SITES HOSTING NATURAL BRAZIL NUT TREE POPULATIONS IN MATO GROSSO STATE
- Author
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Spera, Silvio Tulio, primary, Baldoni, Aisy Botega, additional, Magalhães, Ciro Augusto de Souza, additional, Lulu, Jorge, additional, Tonini, Hélio, additional, Zolin, Cornélio Alberto, additional, and Behling, Maurel, additional
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- 2020
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23. Mixed settlements of eucalyptus and acacia in transition area between Brazilian Savana (Cerrado) and Amazon Forest biomes
- Author
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Camargo, Diego, Behling, Maurel, Bouillet, Jean-Pierre, Rosada De Oliveira, Ivanka, De Moraes Gonçalves, Jose Leonardo, and Campos Pereira, Murilo
- Subjects
Eucalyptus grandis ,Fixation de l'azote ,forêt mélangée ,F08 - Systèmes et modes de culture ,forêt tropicale ,Eucalyptus urophylla ,Plantation forestière ,K10 - Production forestière ,Arbre fixateur d'azote ,F61 - Physiologie végétale - Nutrition ,Acacia mangium ,Savane - Abstract
The adoption of mixed planting with eucalyptus and legume tree espcie - able to fiox nitrogen, is a sustanaible alternative to propvide nitrogen to eucalyptus. Our objective was to evaluate if the mixed planting of eucalyptus and acacia yields basal area equivalent to homogeneous eucalyptus planting. The treatments evaluated were: eucalyptus (E, clone I144 -E. urophylla x E. grandis) with and without nitrogen fertilization (0A: 100E+N e 0A: 100E-N), acacia (A. Acacia mangium) (100A: 0E), acacia and eucalyp ratio 1: 2(33A: 67E) and 1: 1 (50A: 50E).Randomized blocks design (RBD) was used, with four replicates and plot with 1,296 m² (12x12 trees) and 576 m² of useful area (double surround, with spacing 3 x 3 m).The trees were measured at three years of age by circumferenceat brest height (CBH) and basal area (BA, m² ha-1). BA was different among treatments (p 0.35, in both acacia represented 60% and 84% of the BA for 1:2 and 1:1 ratio between eucalyptus and acacia. The interspecific competition was positive for acacia and negative for eucalyptus.
- Published
- 2019
24. Eucalyptus and Acacia mangium tree growth and stand production in pure and mixed-species plantations along an ecological gradient in Brazil
- Author
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De Oliveira, Ivanka Rosada, Behling, Maurel, Hakamada, Rodrigo, Moreira, Gabriela, Brandani, Carolina, Gonçalves, José Leonardo M., Guerrini, Iraê Amaral, Laclau, Jean-Paul, Robin, Agnès, Bordron, Bruno, Le Maire, Guerric, and Bouillet, Jean-Pierre
- Abstract
The association of Acacia could increase Eucalyptus plantations productivity through a positive balance between facilitative effects and competition between species. In Brazil, the development of mono-specific stands of Acacia mangium (100A) and Eucalyptus sp. (100E) was compared with nitrogen (N) fertilisation treatment (100E + N) and mixed-species plantations in a 1:1 ratio (50A:50E). The study was conducted in Itatinga-SP, Sinop-MT and Colinas-TO with mean annual temperature of 19.4, 25.0 and 27.5 °C, mean annual rainfall of 1320, 2640, and 1850 mm, and dry season duration of 3, 5 and 7 months, respectively. The soils are sandy to sandy-clay. At 36 months, Eucalyptus height in 100E was 18.9, 10.9 and 13.7 m, in SP, MT and TO, respectively. For Acacia the corresponding values in 100A were 14.2, 13.5 and 10.8 m, respectively. This pattern, also observed for diameter at breast height, showed that Eucalyptus was proportionally more adapted to the ecological conditions than Acacia in SP, the opposite being found in MT. Stand basal area (SBA) was 2, 10 and 3 % higher in 100E+N than in 100E in SP, MT and TO, respectively. SBA was 7 and 1 % higher in 100E (8.33 and 3.70 m2 ha-1) than in 100A (7.77 and 3.66 m2 ha-1) in SP and TO, respectively. By contrast, SBA was 69 % higher in 100A (7.54 m2 ha-1) than in 100E (4.47 m2 ha-1) in MT. SBA was 6 and 4 % higher in 100E than in 50A:50E in SP and TO, respectively. By contrast, SBA was 21 % higher in 50A:50E than in 100E in SP. The occurrence of higher stand production in mixed species plantations of Eucalyptus and A. mangium than Eucalyptus monocultures depends on ecological conditions. When conditions permit high eucalypt stand yield as observed in SP, the potential N facilitation by Acacia cannot balance the lower potential of growth of Acacia trees, which are also deeply competed by Eucalyptus trees. By contrast, as observed in MT mixed plantations are likely more productive than Eucalyptus monoculture when the environmental conditions (hot and humid climate) are more favourable for acacia than eucalyptus and when the soils are deficient in N. Adverse conditions for both Eucalyptus and Acacia (e.g. extreme high temperatures, marked dry season) as found in TO are likely to prevent any efficient facilitation processes between species.
- Published
- 2018
25. BIOMASSA E NUTRIENTES DE EUCALIPTO CULTIVADO EM SISTEMA AGROSSILVIPASTORIL
- Author
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Wink, Charlote, primary, Lange, Anderson, additional, Araújo, Kamile Zompero, additional, Silveira, Ana Paula, additional, Behling, Maurel, additional, Wruck, Flávio Jesus, additional, and Zandonadi, Rodrigo Sinaidi, additional
- Published
- 2018
- Full Text
- View/download PDF
26. Relações entre parte aérea e raízes em povoamentos de teca
- Author
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Behling, Maurel, primary, Felipe, Rafaella Teles Arantes, additional, Farias, Jaqueline Bento, additional, Carvalho, Géssica De, additional, and Neves, Júlio César Lima, additional
- Published
- 2018
- Full Text
- View/download PDF
27. EMISSÕES DE ÓXIDO NITROSO E METANO DO SOLO EM ÁREAS DE RECUPERAÇÃO DE PASTAGENS NA AMAZÔNIA MATOGROSSENSE
- Author
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Nogueira,Anna K. da S., Rodrigues,Renato de A. R., Castro,Bruno S., Nogueira,Thiago F., Silva,Jacqueline J. N. da, Behling,Maurel, Mombach,Mircéia, Armacolo,Natassia, and Silveira,Júlia Graziela
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livestock ,lcsh:Chemistry ,mitigation ,climate change ,lcsh:QD1-999 ,greenhouse gases - Abstract
This study evaluates the chemical processes responsible for the nitrous oxide (N2O) and methane (CH4) fluxes in the managed pasture (PM) and unmanaged pasture (PNM). In addition, the impact of nitrogen fertilization on the N2O and CH4 fluxes was assessed. The experiments were conducted on three farms in Alta Floresta city in the state of Mato Grosso. Both regular and intensive samples were collected from PM, PNM, and forest areas for each of the properties. The gases were sampled using static chambers in the morning. Higher N2O fluxes were recorded in the PMs, whereas the CH4 fluxes showed no influence of nitrogen fertilization in both regular and intensive samples. Low fertilizer levels resulted in low N2O emissions.
- Published
- 2015
28. Optimizing seeding density of fast-growing native trees for restoring the Brazilian Atlantic Forest
- Author
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Meli, Paula, primary, Isernhagen, Ingo, additional, Brancalion, Pedro H. S., additional, Isernhagen, Elaine C. C., additional, Behling, Maurel, additional, and Rodrigues, Ricardo R., additional
- Published
- 2017
- Full Text
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29. EMISSÕES DE ÓXIDO NITROSO E METANO DO SOLO EM ÁREAS DE RECUPERAÇÃO DE PASTAGENS NA AMAZÔNIA MATOGROSSENSE
- Author
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Nogueira, Anna K. da S., Rodrigues, Renato de A. R., Castro, Bruno S., Nogueira, Thiago F., Silva, Jacqueline J. N. da, Behling, Maurel, Mombach, Mircéia, Armacolo, Natassia, and Silveira, Júlia Graziela
- Subjects
livestock ,mitigation ,climate change ,greenhouse gases - Abstract
This study evaluates the chemical processes responsible for the nitrous oxide (N2O) and methane (CH4) fluxes in the managed pasture (PM) and unmanaged pasture (PNM). In addition, the impact of nitrogen fertilization on the N2O and CH4 fluxes was assessed. The experiments were conducted on three farms in Alta Floresta city in the state of Mato Grosso. Both regular and intensive samples were collected from PM, PNM, and forest areas for each of the properties. The gases were sampled using static chambers in the morning. Higher N2O fluxes were recorded in the PMs, whereas the CH4 fluxes showed no influence of nitrogen fertilization in both regular and intensive samples. Low fertilizer levels resulted in low N2O emissions.
- Published
- 2015
30. Distribuição horizontal e vertical de fósforo em sistemas de cultivos exclusivos de soja e de integração lavoura-pecuária-floresta
- Author
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Diel, Debora, Behling, Maurel, Neto, Austeclinio Lopes de Farias, and Isernhagen, Elaine Cristina Casula
- Subjects
P remanescente ,sistemas de produção ,Eucalyptus ,production systems ,ILPF ,remaining P ,agrosilvopastoral ,nível crítico ,ICLF ,agrossilvipastoril ,critical level - Abstract
O objetivo deste trabalho foi avaliar a distribuição horizontal e vertical do fósforo no solo e a produtividade de soja em sistemas de cultivos exclusivos e de integração lavoura-pecuária-floresta (ILPF). Foram avaliados os tratamentos: floresta plantada de eucalipto; lavoura de soja e milho safrinha consorciado com Urochloa brizantha 'Marandu'; pastagem de U. brizantha; sistema de ILPF; e duas áreas controle, com floresta nativa e pousio. O solo foi coletado nas camadas de 0-5, 5-10, 10-20 e 20-30 cm, para determinação das características químicas. As avaliações foram realizadas no segundo ano agrícola após a implantação do experimento. No sistema de ILPF, solo e produtividade foram avaliados em quatro transectos equidistantes, no centro do renque e a 3, 6, 10 e 15 m do renque, nas faces norte e sul. Os teores de P disponível (Mehlich-1) foram maiores nas camadas superficiais do solo, nos sistemas com soja/milho safrinha e com ILPF. No ILPF, os teores de P disponível não diferiram entre as distâncias do renque das árvores, e a produtividade de soja não diferiu da observada no sistema com soja/milho safrinha. Portanto, com dois anos de implantação, o sistema ILPF ainda não é capaz de interferir marcadamente nas características químicas do solo e na produtividade da soja. The objective of this work was to evaluate the horizontal and vertical distribution of soil phosphorus and soybean yield in single-crop and in integrated crop-livestock-forest (ICLF) systems. The evaluated treatments were: forest planted with eucalyptus; soybean crop and off-season corn intercropped with Urochloa brizantha 'Marandu'; U. brizantha pasture; ICLF system; and two control areas, with native forest and fallow. Soil samples were taken at the depths of 0-5, 5-10, 10-20, 20-30 cm for determining chemical characteristics. Evaluations were done in the second crop year after the implementation of the experiment. In the ICLF system, soil and yield were evaluated in four equidistant transects, at the center of the tree rows, and at 3, 6, 10, and 15 m from the rows on the northern and southern sides. Available P levels (Mehlich-1) were greater at the upper soil layers, in the systems with soybean/off-season corn and ICLF. In ICLF, available P contents did not differ between the distances from the tree rows, and soybean yield did not differ from the one observed in the soybean/off-season corn system. Therefore, a two-year ICLF is not yet capable of major interference on soil chemical characteristics and on soybean yield.
- Published
- 2014
31. Reaction of sweet orange cultivars expressing the attacin A gene to 'Candidatus Liberibacter asiaticus' infection
- Author
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Felipe, Rafaella Teles Arantes, Mourão Filho, Francisco de Assis Alves, Lopes, Silvio Aparecido, Mendes, Beatriz Madalena Januzzi, Behling, Maurel, and Pereira Junior, Ernani Vicente
- Subjects
disease resistance ,resistência a doenças ,antibacterial peptide ,genetic transformation ,huanglongbing ,transformação genética ,peptídeo antibacteriano ,Citrus sinensis - Abstract
The objective of this work was to evaluate the reaction of four sweet orange cultivars expressing the attacin A gene to 'Candidatus Liberibacter asiaticus' (Las) infection, a bacterium associated to huanglongbing (HLB) disease. Transgenic sweet orange plants of Hamlin, Natal, Pêra, and Valência cultivars, as well as nontransgenic controls received inocula by grafting budwood sections of HLB-infected branches. Disease progression was evaluated through observations of leaf symptoms and by polymerase chain reaction (PCR) analysis, eight months after inoculation. A completely randomized design was used, with four experiments (one for each cultivar) performed simultaneously. Bacteria title was estimated by quantitative PCR (qPCR). HLB symptoms and Las titers were present in nontransgenic and transgenic plants expressing the attacin A gene of the four sweet orange cultivars, eight months after bacteria inoculation. Five transgenic lines (transformation events) of 'Pêra' sweet orange expressing the attacin A gene have significantly lower Las titers in comparison with nontransgenic plants of this cultivar. O objetivo deste trabalho foi avaliar a reação de quatro cultivares de laranjeira doce que expressam o gene atacina A à infecção por 'Candidatus Liberibacter asiaticus' (Las), bactéria associada à doença huanglongbing (HLB). Plantas transgênicas das cultivares Hamlin, Natal, Pêra e Valência, bem como controles não transgênicos, receberam inóculos, por enxertia, de seções de ramos infectados por HLB. A progressão da doença foi avaliada pela observação de sintomas foliares e por análise da reação em cadeia da polimerase (PCR), oito meses após a inoculação. Utilizou-se o delineamento inteiramente casualizado, com quatro experimentos (um para cada cultivar) realizados simultaneamente. A concentração bacteriana foi estimada por PCR quantitativo (qPCR). Sintomas de HLB e Las estavam presentes em plantas não transgênicas e em plantas transgênicas que expressaram o gene atacina A, nas quatro cultivares de laranjeira doce, oito meses após a inoculação. Cinco linhagens transgênicas (eventos de transformação) de laranjeira 'Pêra', que expressam o gene atacina A, apresentam concentrações de Las significativamente inferiores às das plantas não transgênicas desta cultivar.
- Published
- 2013
32. Decomposition and release of nutrients from crop residues on soybean-maize cropping systems.
- Author
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Cavalli, Edilson, Lange, Anderson, Cavalli, Cassiano, and Behling, Maurel
- Subjects
CROP residues ,PLANT nutrients ,SOYBEAN ,CROPPING systems ,CORN - Abstract
Copyright of Brazilian Journal of Agricultural Sciences / Revista Brasileira de Ciências Agrárias is the property of Universidade Federal Rural de Pernambuco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
- View/download PDF
33. Optimizing seeding density of fast‐growing native trees for restoring the Brazilian Atlantic Forest.
- Author
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Meli, Paula, Isernhagen, Ingo, Brancalion, Pedro H. S., Isernhagen, Elaine C. C., Behling, Maurel, and Rodrigues, Ricardo R.
- Subjects
SEEDLINGS ,SOWING ,FOREST restoration ,TROPICAL forests ,RESTORATION ecology - Abstract
Direct seeding is a promising method for reducing restoration costs, but methodological adjustments are still needed to reduce the uncertainties to achieve a desired seedling density in the field. Here, we investigated the technical approaches and outcomes of direct seeding of fast‐growing native trees for cost‐effective restoration of the Brazilian Atlantic Forest. Sixteen tree species were manually sown at three seeding densities in planting lines prepared with a subsoiler, in two experimental areas, which were weeded with hoes and had leaf‐cutter ants controlled with insecticide baits. Seedling density was monitored for 30, 90, and 180 days after sowing. No substantial change in tree density was observed 30 days after sowing, thus allowing fast corrective actions to adjust tree density. Only a minor proportion of the sown viable seeds resulted in established seedlings at 180 days (4–12% for the community; approximately 25% for the species with the best performance). However, tree density was high (6,000 on average; approximately 1,400–13,000 trees/ha) and allowed an effective canopy development. Overall, seedling density was linearly and positively associated with seeding density, was highly influenced by the species used, and was higher in the soil with higher sum of bases. Buying seeds would be, for most species, less costly than buying nursery‐grown seedlings for achieving the expected tree densities in the field. These results evidence the potential of direct seeding for reducing restoration costs, as well as the need to select species with better performance and adjust seeding densities to optimize the use of this method. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
34. Charbon de bois et sidérurgie en Amazonie brésilienne : quelles pistes d'améliorations environnementales ? : l'exemple du pôle de Carajas
- Author
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Piketty, Marie-Gabrielle, Fonseca Morello, Thiago, Bouillet, Jean-Pierre, Laclau, Jean-Paul, Behling, Maurel, Caldeira-Pires, Armando, Rousset, Patrick, Oliveira Rodrigues, Thiago, Dufour, Thomas, Durieux, Laurent, Sist, Plinio, and Vieira, Paulo
- Subjects
P05 - Ressources énergétiques et leur gestion ,industrie minière ,000 - Autres thèmes ,P01 - Conservation de la nature et ressources foncières ,gestion des ressources naturelles ,Charbon de bois ,K10 - Production forestière - Abstract
Le fonctionnement du secteur sidérurgique du pôle de Carajas, en Amazonie brésilienne, repose sur une importante consommation de charbon de bois. Étant donné les impacts directs et indirects de la production de charbon de bois sur la déforestation et la dégradation des forêts naturelles, cette filière de production fait l'objet de contestations environnementales croissantes. Cette publication analyse les alternatives d'améliorations environnementales de la filière charbon de bois destinée au secteur sidérurgique ainsi que les principaux freins techniques, économiques et institutionnels à leur adoption. Plusieurs alternatives sont envisageables, basées sur l'usage de technologies de carbonisation plus efficaces, le reboisement ou le boisement des terres dégradées et, dans une moindre mesure, l'utilisation de résidus d'exploitation forestière de faible impact. Certaines d'entre elles sont économiquement avantageuses sur le long terme et des financements peuvent être mobilisés pour faciliter leur adoption. Cependant, la régularisation de la situation foncière et environnementale apparaît comme un prérequis incontournable pour leur adoption.
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- 2011
35. EMISSION OF NITROUS OXIDE AND METHANE IN SOIL FROM PASTURE RECOVERY AREAS IN THE AMAZON MATOGROSSENSE
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Nogueira, Anna K. da S., primary, Rodrigues, Renato de A. R., additional, Castro, Bruno S., additional, Nogueira, Thiago F., additional, Silva, Jacqueline J. N. da, additional, Behling, Maurel, additional, Mombach, Mircéia, additional, Armacolo, Natassia, additional, and Silveira, Júlia Graziela, additional
- Published
- 2015
- Full Text
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36. Nutrition, biomass partition and growth of teak stands in Tangará da Serra-MT
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Behling, Maurel, Leite, Hélio Garcia, Leite, Roberto de Aquino, Neves, Júlio César Lima, Ker, João Carlos, and Martins, Lafayete Gonçalves Campelo
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Produtividade florestal ,CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO [CNPQ] ,Growth modeling ,Modelagem do crescimento ,Forest productivity ,Tectona Grandis - Abstract
Conselho Nacional de Desenvolvimento Científico e Tecnológico Tectona grandis, popularly known as teak, originated in the Southwest Asia, is being successfully cultivated in Mato Grosso State, Brazil, providing high-quality wood for sawmill. Appropriate nutritional management is necessary to the obtain of high productivity, as well as the sustainability of the production. This work had as objectives: 1) quantify the biomass, the macronutrients content and their distribution in the different compartments of teak trees, in order to evaluate the use efficiency of those nutrients for the formation of different compartments and surfaces of acquisition of resources: light, water and nutrient; 2) parameterization of the processes-based growth model 3-PG (Physiological Principles in Predicting Growth) for teak plantations cultivated in the Southwest region of Mato Grosso; and 3) improve the plant subsystem of the system for using in fertilizer recommendations for teak plantations (FERTTECA). The work was developed in teak plantations located in Tangará da Serra-MT, a municipality in which seven plots with 132 trees each were assessed. Two of these plots were with young trees (17 months) and five with adult trees (90 months). Three of these adult plots were already evaluated at 29 months by Oliveira (2003) and two more were added and evaluated in 2004 by the company owning the area. Together, four different times of evaluation 17, 29, 64 and 90 months were obtained. The average tree was cut down in each plot at 17, 29 and 64 months, however, at 90 months, the stands were divided into three 1.3 m-diameter (DBH) classes (lower, middle and upper class). The sample trees were those with the DBH values closest to the average of each class. The trees were xviii separated into: leaves, branches, bark, stemwood, roots and litter, aiming the determination of dried matter and nutrients content besides the specific leaf area (SLA) and specific root area (SRA) for fine roots (< 2 mm ϕ) and middle roots (2-5 mm ϕ). In the soil, the nutrients content, the soil density and particles density, the thick sand, fine sand, silt, clay fractions and water retention curves in different layers were determined. The clay content was higher than 60% in the surface, decreasing with depth. On average, the soil density was 1.2 kg/dm³ and the particles density was 2.9 kg/dm³ along the soil profile. The available water varied between 0.086 and 0.134 m³/m³ in the 0-20 cm layer and 0.116 and 0.171 m³/m³ in the 40-60 cm layer. The total biomass of fine and medium roots was 1.335 and 1.258 kg/ha, respectively, with 56.2% of the fine roots and 44.4% of the medium roots concentrated in the 0-20 cm layer. The total fine roots length was 8.237 km/ha, with 57.4% in the first 20 cm of depth. The total amount of roots nutrients, in the soil layer studied (40-60 cm), in decreasing order was K > Ca > N > Mg > P > S, being P and S the nutrients used with the highest efficiency for the formation of root surface. The teak presented, on average, specific leaf area (SLA) of 13.1 m²/kg and SRA (fine roots) of 13.9 m²/kg, indicating similar C use efficiency in the production of surfaces for acquisition of resources (solar radiation, water and nutrients) and suggesting synchrony in the C allocation for leaves and roots. The leaf area index (LAI) was 1.2 m²/m² in young plants and 8.3 m²/m² in adult plants. The total biomass determined at 90 months was 133 t/ha with the following partition: stemwood (51%), roots (17%), branches (13%), bark (7%) and leaves (5%). The nutrients use efficiency for aboveground biomass production, in decreasing order, was S > P > Mg > N > K >Ca, while for stemwood production was S > Mg > P > Ca > N > K, having no appreciable differences of efficiency in function of the dominance degree of the trees. The 3-PG parameterization provided good estimates for leaves biomass, SLA, stem biomass (trunk + branches), DBH, stemwood volume and annual average increment, variables that reflect the forest growth. The partition of mineral macronutrients and carbon to the canopy decreased with the age of the trees, increasing in the trunk. The FERTTECA system showed satisfactory estimates of volumetric production and biomass, as well as nutrients contents in stemwood and trunk. A Tectona grandis, popularmente conhecida como teca, originária do sudoeste asiático, é cultivada no Mato Grosso com sucesso, com a obtenção de madeira para serraria de ótima qualidade. O adequado manejo nutricional é condição necessária à obtenção de altas produtividades, bem como à sustentabilidade da produção. Este trabalho teve como objetivos: 1) quantificar a biomassa, o conteúdo de macronutrientes e sua distribuição nos diferentes compartimentos de árvores de teca e avaliar a eficiência de uso desses nutrientes para formação dos diferentes compartimentos e superfícies de aquisição dos recursos luz, água e nutrientes; 2) parametrizar o modelo de crescimento, baseado em processos, 3-PG (Physiological Principles in Predicting Growth) para plantios de teca na região Sudoeste de Mato Grosso; e 3) aprimorar o subsistema planta do sistema para recomendação de adubação para teca (FERTTECA). O trabalho foi desenvolvido em povoamentos de teca no município de Tangará da Serra-MT onde foram avaliadas sete parcelas com 132 árvores/parcela. Destas, duas eram parcelas com árvores jovens (17 meses) e cinco com árvores adultas (90 meses), três das quais também já avaliadas aos 29 meses por Oliveira (2003) e outras duas foram adicionadas e avaliadas em 2004 pela própria empresa proprietária da área. Em conjunto, foram assim obtidas quatro épocas diferentes de avaliação 17, 29, 64 e 90 meses. Foi abatida a árvore média em cada parcela aos 17, 29 e 64 meses, já aos 90 meses estratificou-se em três classes de diâmetro (DAP), representando o grau de dominância. Foram individualizados os componentes: folhas, galhos, casca, lenho, raízes e serapilheira, visando à determinação da matéria seca, teores e conteúdo de nutrientes, além da área foliar específica (AFE) e área específica de raízes finas (< 2 mm ϕ) e médias (2 a 5 mm ϕ). No solo, foram determinados os teores de nutrientes, densidade do solo e de partículas, as frações areia grossa, fina, silte e argila e curvas de retenção de água em diferentes camadas. Os teores de argila do solo são superiores a 60 % na superfície, sempre ultrapassando este valor em profundidade. Em média, a densidade do solo foi de 1,2 kg/dm³ e densidade de partículas de 2,9 kg/dm³ ao longo do perfil do solo. A água disponível, variou de 0,086 a 0,134 m³/m³ na camada de 0-20 cm e de 0,116 a 0,171 m³/m³ na camada de 40-60 cm. A biomassa total de raízes finas e médias foi de 1.335 e 1.258 kg/ha, respectivamente, com 56,2 % das raízes finas e 44,4 % das raízes médias concentradas na camada 0-20 cm. O comprimento total de raízes finas foi de 8.237 km/ha com 57,4 % nos primeiros 20 cm de profundidade. A quantidade total de nutrientes nas raízes, na camada de solo estudada (40-60 cm), em ordem decrescente foi K > Ca > N > Mg > P > S, sendo o P e S os nutrientes utilizados com maior eficiência para a formação de superfície radicular. A teca apresentou, em média, área foliar específica (AFE) de 13,1 m²/kg e ARE (raízes finas) de 13,9 m²/kg, indicando eficiência de mesma ordem de magnitude quanto à utilização do C na produção de superfícies para aquisição dos recursos radiação solar, água e nutrientes. O índice de área foliar (IAF) médio foi 1,2 m²/m² nas plantas jovens e de 8,3 m²/m² nas plantas adultas. A biomassa total do povoamento aos 90 meses foi de 133 t/ha, particionada na seguinte seqüência: lenho (51 %), raízes (17 %), galhos (13 %), casca (7 %) e folhas (5 %). A eficiência de utilização dos nutrientes para produção de parte aérea apresentou a seqüência S > P > Mg > N > K > Ca enquanto que para o lenho S > Mg > P > Ca > N > K, não havendo diferenças apreciáveis de eficiência em função do grau de dominância das árvores. A parametrização do 3-PG proporcionou boas estimativas para biomassa de folhas, índice da área foliar, biomassa de fuste (tronco + galhos), DAP, volume de lenho e incremento médio anual, variáveis que refletem o crescimento da floresta. A partição de carbono e de macronutrientes minerais para a copa decresceu com a idade das árvores, aumentando no tronco. O sistema FERTTECA mostrou-se satisfatório quanto às estimativas de produção volumétrica e de biomassa, bem como quanto aos conteúdos estimados de nutrientes no lenho ou no tronco.
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- 2009
37. Nitrogen and heavy metals in an area of Planossolo of the UFRRJ cultivated with soy (cv. Celeste) after application of industrial residue
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Behling, Maurel, Amaral Sobrinho, Nelson Moura Brasil do, and Oliveira, Clarice de
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leaching ,Glycine max ,organic carbon ,biodisponibilidade ,biosolids ,Agronomia ,lixivia??o ,bioavailability ,bioss?lidos ,carbono org?nico ,nitrifica??o ,nitrification - Abstract
Funda??o Carlos Chagas Filho de Amparo ? Pesquisa do Estado do Rio de Janeiro (FAPERJ) The study was developed with the objective of evaluating the effect of addition of two residues (Ferkal and Mud from the Petroflex Treatment Station of Industrial Residues - LETRIP) in reduction of soil acidity, supply of nutrients, increasing in organic matter content, risk of heavy metal contamination and in the productivity of soy cultivar Celeste, in an area of PLANOSSOLO (Fragiudult). The experiment was developed in an area at the Rural Federal University of Rio de Janeiro campus, during the agricultural year of 2003/04, located in Serop?dica, State of Rio de Janeiro (BR). The treatments were set by combination of dosages of 25, 50 and 100 Mg ha-1 of LETRIP with 3 and 6 Mg ha-1 of Ferkal, plus testimony without both residues. The installation of the experimental plots followed the random experimental block design, factorial 4 x 3, with 12 treatments and 3 repetitions, with a total of 36 plots. The useful area of each plot was 16 m2 plus the adjoining area. The soil was plowed on October 3rd, 2003, and the Ferkal residue was applied on October 8th, manually, in amounts equivalent to 3.0 and 6.0 Mg ha-1 of dry matter, and incorporated to the soil with a rotative hoe. LETRIP was applied in the period from November 15th to December 17th, 2003, at the dosage of 25, 50 and 100 Mg ha-1 of dry matter and incorporated with a rotative hoe. The soy was planted from January 13 to 20th, 2004, approximately 40 days after application of residues Ferkal and LETRIP in 50% of the plots area. The spacing among lines was of 40 cm and the density of plants was of 20 plants for linear meter. The useful area of each plot was represented by the three central rows, being discarded a meter of each row ends. The seeds were inoculated with Bradyrizobium japonicum, ancestries BR 29 and BR 96, recommended for the soy culture. It was made A supplement of fertilizer was applied, equivalent to 60 kg ha-1 of P2O5, or 400 kg ha-1 of Termophosphate Yoorin at the planting. The isolated effects of dosages of Ferkal and LETRIP residues showed a linear pattern, with the increase of soy productivity with increasing dosages of each residue. Though, the largest productions were obtained in the combination of dosages of the residues. The highest dosage of combined Ferkal with the highest dosage of LETRIP resulted in productivity higher than 4000 kg ha-1, an increment of productivity of 1300 kg ha-1 when compared to the testimony. The results obtained demonstrated the potential of those residues for agricultural usage, substituting partially mineral fertilizers. However, it is necessary a special care while equilibrating ratios among organic and mineral N ( - +4 N NH and - -3 N NO + - -2 N NO ), and alterations in content of heavy metals, that should be monitored along the time. Also, soil management practices that preserve organic matter should be used. O estudo foi desenvolvido com o objetivo de avaliar o efeito da adi??o de dois res?duos (Ferkal e o Lodo da Esta??o de Tratamento de Res?duos Industriais da Petroflex (LETRIP)) na corre??o da acidez do solo, fornecimento de nutrientes, aumento no teor de mat?ria org?nica, riscos de contamina??o por metais pesados e na produtividade da cultivar de soja Celeste em uma ?rea de PLANOSSOLO. O experimento foi desenvolvido na ?rea experimental da Universidade Federal Rural do Rio de Janeiro, durante o ano agr?cola 2003/04, localizada em Serop?dica, Estado do Rio de Janeiro. Os tratamentos foram compostos pela combina??o das doses de 0, 25, 50 e 100 Mg ha-1 de LETRIP com 0, 3 e 6 Mg ha-1 de Ferkal. A instala??o das parcelas experimentais seguiu o delineamento experimental de blocos ao acaso, esquema fatorial 4 x 3, com 12 tratamentos e 3 repeti??es, totalizando 36 parcelas experimentais. A ?rea ?til de cada parcela compreendeu 16 m2 mais a ?rea de bordadura. O solo foi preparado no dia 03 de outubro de 2003, no dia 08 de outubro o res?duo Ferkal foi aplicado manualmente em quantidades equivalentes a 3,0 e 6,0 Mg ha-1 de mat?ria seca, e incorporado ao solo com enxada rotativa. O LETRIP foi aplicado no per?odo de 15 de novembro a 17 de dezembro de 2003, as doses de 25, 50 e 100 Mg ha-1 de mat?ria seca e incorporado com enxada rotativa. A semeadura da soja foi realizada no dia 13 a 20 de janeiro de 2004, aproximadamente 40 dias ap?s a aplica??o dos res?duos Ferkal e LETRIP em 50% da ?rea da parcela, o espa?amento entre linhas foi de 40 cm e a densidade de plantas foi de 20 por metro linear. A ?rea ?til de cada parcela foi representada pelas tr?s fileiras centrais, descartando-se um metro das extremidades de cada fileira. As sementes foram inoculadas com Bradyrizobium japonicum, estirpes BR 29 e BR 96, recomendadas para a cultura da soja. Foi feita uma aduba??o suplementar com f?sforo equivalente a 60 kg ha-1 de P2O5, aplicando-se 400 kg ha-1 de Termofosfato Yoorin no momento da semeadura. Os efeitos isolados das doses dos res?duos Ferkal e LETRIP foram lineares ocorrendo um aumento da produ??o com o aumento isolado das doses de cada res?duo. Embora, as maiores produ??es foram obtidas na combina??o das doses destes res?duos, sendo que a maior dose de Ferkal combinada com a maior dose de LETRIP possibilitou uma produtividade superior a 4000 kg ha-1, um incremento de produtividade superior a 1300 kg ha-1 em rela??o ? testemunha. Os resultados obtidos demonstram o potencial desses res?duos na utiliza??o agr?cola, em substitui??o aos adubos minerais, sendo necess?rio um cuidado especial quanto as rela??es de equil?brio entre N-org?nico e mineral ( - +4 N NH e - -3 N NO + - -2 N NO ) e as altera??es nos teores de metais pesados, devendo estes serem monitorados ao longo do tempo e serem adotados manejos que visem preservar a mat?ria org?nica do solo.
- Published
- 2005
38. Eficiência de utilização de nutrientes para formação de raízes finas e médias em povoamento de teca
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Behling, Maurel, primary, Neves, Júlio César Lima, additional, Barros, Nairam Félix de, additional, Kishimoto, Caroline Barbizan, additional, and Smit, Luit, additional
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- 2014
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39. Distribuição horizontal e vertical de fósforo em sistemas de cultivos exclusivos de soja e de integração lavoura-pecuária-floresta
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Diel, Debora, primary, Behling, Maurel, additional, Neto, Austeclinio Lopes de Farias, additional, and Isernhagen, Elaine Cristina Casula, additional
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- 2014
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40. Primeiro registro de cigarra em reflorestamentos com paricá no Estado de Mato Grosso, Brasil
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Maccagnan, Douglas Henrique Bottura, primary, Pitta, Rafael Major, additional, Lunz, Alexandre Mehl, additional, Behling, Maurel, additional, and Martinelli, Nilza Maria, additional
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- 2014
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41. Plantations d'eucalyptus et sidérurgie en Amazonie : apports du modèle 3-PG
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Behling, Maurel, Piketty, Marie-Gabrielle, Morello, Thiago Fonseca, Bouillet, Jean-Pierre, Mesquita Neto, Francisco, Laclau, Jean-Paul, Behling, Maurel, Piketty, Marie-Gabrielle, Morello, Thiago Fonseca, Bouillet, Jean-Pierre, Mesquita Neto, Francisco, and Laclau, Jean-Paul
- Abstract
Le secteur sidérurgique de Carajás, en Amazonie Brésilienne, fait l'objet de contestations environnementales du fait de sa forte consommation en charbon de bois. Ce charbon est essentiellement produit à partir de biomasse de forêts naturelles, avec des impacts directs et indirects sur la déforestation et la dégradation de ces écosystèmes. Les plantations d'eucalyptus à vocation énergétique installées sur des pâturages dégradés constituent une alternative intéressante. Peu de ces plantations ont été mises en place jusqu'à présent et faute d'évaluations valables de leur potentiel de production, une étude a été menée pour présenter une estimation consolidée de la croissance et de la productivité des plantations d'eucalyptus du pôle de Carajás. Celles-ci ont été obtenues à partir du modèle 3-PG (Physiological Principles in Predicting Growth). Son paramétrage a été réalisé à partir de données de croissance du massif d'eucalyptus d'une entreprise de la municipalité de Breu Branco dans l'État du Pará au Brésil. La calibration locale du modèle s'est avérée beaucoup plus performante que l'utilisation de paramètres établis pour des plantations d'eucalyptus dans d'autres régions du Brésil, d'Afrique du sud ou d'Australie. Les simulations réalisées indiquent que l'accroissement moyen annuel actuel de l'ordre de 20 m³ à l'hectare, obtenu pour une période de six ans, pourrait augmenter jusqu'à 30 m³ avec des fertilisations adaptées et un contrôle efficace du sous bois. Elles suggèrent aussi que des productions supérieures seraient obtenues sans déficit hydrique. Cela montre la nécessité de sélectionner les zones de plantation où la saison sèche est la moins marquée autour du pôle de Carajás. La calibration du modèle 3-PG a permis d'améliorer cet outil de gestion des plantations industrielles dans les conditions amazoniennes.
- Published
- 2011
42. Reaction of sweet orange cultivars expressing the attacin A gene to 'Candidatus Liberibacter asiaticus' infection
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Felipe, Rafaella Teles Arantes, primary, Mourão Filho, Francisco de Assis Alves, additional, Lopes, Silvio Aparecido, additional, Mendes, Beatriz Madalena Januzzi, additional, Behling, Maurel, additional, and Pereira Junior, Ernani Vicente, additional
- Published
- 2013
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43. Plantations d'eucalyptus et sidérurgie en Amazonie : apports du modèle 3-PG
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Behling, Maurel, primary, Piketty, Marie-Gabrielle, additional, Morello, Thiago Fonseca, additional, Bouillet, Jean-Pierre, additional, Mesquita Neto, Francisco, additional, and Laclau, Jean-Paul, additional
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- 2011
- Full Text
- View/download PDF
44. Transporte de boro no solo e sua absorção por eucalipto
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Mattiello, Edson Marcio, primary, Ruiz, Hugo Alberto, additional, Silva, Ivo Ribeiro da, additional, Barros, Nairam Félix de, additional, Neves, Julio César Lima, additional, and Behling, Maurel, additional
- Published
- 2009
- Full Text
- View/download PDF
45. Nodulação, acúmulo de nitrogênio no solo e na planta, e produtividade de soja em solo tratado com lodo de estação de tratamento de resíduos industriais
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Behling, Maurel, primary, Dias, Fabiana de Carvalho, additional, Amaral Sobrinho, Nelson Moura Brasil do, additional, Oliveira, Clarice de, additional, and Mazur, Nelson, additional
- Published
- 2009
- Full Text
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46. Calibration of the Pilodyn instrument for the indirect in situ determination of the basic wood density of balsa.
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de Souza Pecegueiro, Maicon, Sobreira Hoogerheide, Eulalia Soler, Burlamaqui Bendahan, Amaury, Viana Evangelista, Wescley, and Behling, Maurel
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- *
PEARSON correlation (Statistics) , *LINEAR equations , *CALIBRATION , *ANALYSIS of variance , *STATISTICAL correlation ,WOOD density - Abstract
Balsa wood is used widely in the nautical, aeronautical and wind-energy industries because of its low-density and highresistance. In the Brazilian state of Mato Grosso, speculative producers with little knowledge of the culture have established balsa plantations using non-standardized and non-selected seedlings. In this sense, research is needed to improve balsa cultivation under Brazilian conditions to better explore the resource. The present study evaluated the efficiency of the Pilodyn instrument for the indirect determination of the basic wood density (BWD) of balsa. Twenty 12-year old balsa trees cultivated in Alta Floresta, Mato Grosso, were probed with the Pilodyn instrument on both north and south faces of the trunk at the base and at 1.30 and 3.10 m from the ground. Wood discs were subsequently collected from the probed sites and BWD determined according to the water-immersion method. Data were submitted to the Shapiro-Wilk normality test followed by analysis of variance and Pearson's correlation analysis with a=0.05. The BWD of balsa decreased in the direction from the base to the top of the tree. The penetration depth of the Pilodyn probe was inversely proportional to BWD with a correlation that was strong (R2=0.72) at heights of 1.30 and 3.10 m but considered weak (R2=0.46) at the base of the trunk. The reliability of the Pilodyn method was sufficient to allow the development of a linear equation that could be applied for the indirect determination of the BWD of balsa based on the penetration depth of the Pilodyn probe assessed at 1.30 m from the ground. [ABSTRACT FROM AUTHOR]
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- 2022
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47. Soil chemical attributes and performance of crops in rotation or consortium with cover crops in an agroforestry system
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Arruda, Everton Martins, Collier, Leonardo Santos, Flores, Rilner Alves, Calil, Francine Neves, Damin, Virgínia, Cruz, Simério Carlos Silva, and Behling, Maurel
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CIENCIA DO SOLO [AGRONOMIA] ,Leguminosas ,Consórcio de culturas ,Soil fertility ,Legumes ,Fertilidade do solo ,Crop consortium - Abstract
A presença do componente arbóreo, como em sistemas agroflorestais, pode promover maior equilíbrio dos processos ecológicos tropicais, possibilitando uma exploração agrícola em perfis verticais e horizontais da paisagem. Isto, aliado a inserção de plantas de cobertura solteiras ou consorciadas nos sub-bosque agroflorestal pode aumentar os efeitos benéficos pela interação entre as espécies, favorecendo maior acúmulo e ciclagem de nutrientes. Com isso, o objetivo desta pesquisa foi avaliar os atributos químicos do solo e o desempenho de espécies agrícolas e plantas de coberturas em rotação/consórcio em sistema agroflorestal na região do cerrado goiano. A pesquisa foi realizada entre os anos de 2012 e 2016, na cidade de Goiânia-Goiás, em um sistema agroflorestal implantado em uma floresta de barueiros (Dipteryx alata V.) com 8 anos de idade. O solo da área experimental foi classificado como Latossolo Vermelho distrófico típico. O delineamento experimental foi em blocos casualizados (DBC), com quatro repetições. As plantas de cobertura foram cultivadas solteiras: feijão guandu (Cajanus cajan); estilosantes cv. campo grande (Stylosanthes macrocephala - 20% e Stylosanthes capitata - 80%); capim massai (Panicum maximum) e consorciadas: feijão guandu + massai e estilosantes + massai, além de uma área mantida sob vegetação espontânea (tratamento controle). Foram avaliados os atributos de fertilidade química do solo, a produtividade de fitomassa seca e os acúmulos de macronutrientes pelas plantas de cobertura, a qualidade e a produtividade do milho para silagem cultivado em rotação as plantas de cobertura, o índice relativo de clorofilas e o crescimento de bananeiras cultivado em consórcio com as plantas de cobertura, além do crescimento das árvores de barueiros durante este período (altura, diâmetro a altura do peito e diâmetro de copa). O estilosantes campo grande aumenta os teores de cálcio, valores de pH e soma de bases na solução do solo na profundidade 0-10 cm após dois anos de cultivo. Todavia, o capim massai solteiro aumenta os teores de potássio na profundidade 0-10 e 10-20 cm no mesmo ano de cultivo. A produtividade de matéria seca de milho para silagem é semelhante entre os cultivos com residual de palhada de estilosantes, feijão guandu, massai e estilosantes + massai, entretanto, o cultivo com residual de estilosantes aumenta o percentual de proteína bruta. O crescimento em altura das bananeiras aos 6 e 12 meses é maior no consórcio com capim massai quando comparado à área mantida com vegetação espontânea. O incremento de crescimento em altura das árvores de barueiros é aumentado somente após dois anos através do residual de estilosantes campo grande. A maior produtividade de fitomassa seca é obtida como capim massai solteiro. Os acúmulos de nitrogênio, fósforo, cálcio e enxofre são semelhantes entre o capim massai solteiro, o estilosantes solteiro e o consórcio estilosantes + massai, entretanto os acúmulos de potássio e magnésio somente são superiores na parte aérea do capim massai solteiro. The presence of an arboreal component, such as in agroforestry systems, can promote a better balance of tropical ecological processes, allowing agricultural exploration in vertical and horizontal landscape profiles. This, together with the inclusion of single or intercropped cover crops in the agroforestry understory can increase the beneficial effects through interaction among species, favoring greater nutrient accumulation and cycling. Therefore, the objective of this research was to evaluate the soil chemical attributes and the performance of agricultural species and cover crops in rotation/consortium in an agroforestry system in the cerrado region of Goiás. The research was carried out between 2012 and 2016, in the city of Goiânia-Goiás, in an agroforestry system implanted in an 8- year-old Baru forest (Dipteryx alata V.). Soil from the experimental area was classified as typical dystrophic Red Latosol. The experimental design was randomized complete block (RCB), with four replications. Cover plants were cultivated singly: Pigeon pea (Cajanus cajan); Stylosanthes cv. Campo Grande (Stylosanthes macrocephala - 20% and Stylosanthes capitata - 80%); Massai grass (Panicum maximum) and intercropped: Pigeon pea+ Massai grass and Stylosanthes + Massai grass, in addition to an area under spontaneous vegetation (control treatment). We evaluated soil chemical fertility and dry phytomass productivity and macronutrient accumulations by cover crops, quality and yield of corn silage grown in rotation with the cover plants, relative index of chlorophylls and growth of Banana trees cultivated in consortium with the cover plants, in addition to the growth of the Baru trees during this period (height, diameter at breast height and crown diameter). The Campo Grande Stylosanthes increased the calcium contents, pH values and sum of bases in the soil solution at depth 0-10 cm after two years of cultivation. However, Massai grass, alone, increased potassium levels at depth 0-10 and 10-20 cm in the same cultivation year. The dry matter yield of silage maize was similar among the residual straw of Pigeon pea, Massai grass, and Stylosanthes + Massai grass cultivars. However, cultivation with residual Stylosanthes increased the crude protein percentage. The growth in height of the banana trees at 6 and 12 months was higher in consortium with Massai grass when compared to the area maintained with spontaneous vegetation. The incremental increase in height of Baru trees only increased after two years through the residual Campo Grande Stylosanthes. The highest productivity of dry phytomass was obtained from Massai grass, alone. The accumulations of nitrogen, phosphorus, calcium and sulfur were similar among Massai grass alone, Stylosanthes alone, and Massai grass + Stylosanthes consortium. However, potassium and magnesium accumulations were only higher in the aerial part of the Massai grass, alone. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
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- 2017
48. Analysis of growth and production to determine the maximum income of paricá plantations in the northern region of Mato Grosso
- Author
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Kazama, Verônica Satomi, Fleig, Frederico Dimas, Farias, Jorge Antonio de, and Behling, Maurel
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Site class ,Growth prognosis ,CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL [CNPQ] ,Classe de sítio ,Volume for peeling of paricá plantations ,Prognose do crescimento ,Volume para laminação de paricá - Abstract
The objective of this study was to analyze the growth and production to obtain the maximization of income of commercial plantations destined to lamination of paricá (Schizolobium parahyba var. Amazonicum (Huber x Ducke) Barneby), implanted with spacing of 3 x 3,2 m, in the Region of the State of Mato Grosso. The data were collected in two sites, bad (SR) and good (SB), in stands at two, three and four years of age, in city Guarantã do Norte. Production scenarios were created in which the modeling of growth and production considered the intrinsic growth of the species and the frequency distribution by diametric class of interest for lamination. The models used were: growth in diameter (Dap) as a function of age (I); Of crown insertion height (Hic) Dap function; And tapering for volume estimation by the 5th degree polynomial. Next, the financial scenario was elaborated through the financial criteria VPL (Net Present Value), RBC (Cost Benefit Ratio), Internal Rate of Return (IRR) and CMPr (Average Cost of Production) considering the annual interest rates of 5 , 50%, 8.75% and 13.65%. The results showed that the growth models in Dap (R²aj of 0.8341), Hic models (R²aj between 0.9666 to 0.9527) and those of grinding (the R²aj between 0.8887 to 0.9146) had Good statistical adjustments. The financial criteria of the scenarios were attractive, except for the four-year SR stands. It was observed that the maximization of production was given by the current annual increment (ICA) of the settlement to the 6th year in SR (73.60 m³/ha/year) and SB (114.67 m³ ha/year), and the financial maximization by TIR (43%) and between the 5th and the 6th year in the SB (59%). Finally, according to the production and financial scenarios, it was possible to verify that, except for the bad site at the age of four years, the paricá planting for lamination of the present study can be considered a profitable investment regardless of the quality of the site under the rates interest rate considered at work. O objetivo deste trabalho foi analisar o crescimento e produção para obter a maximização da renda de plantios comercias destinados à laminação de paricá (Schizolobium parahyba var. amazonicum (Huber x Ducke) Barneby), implantados com espaçamento de 3 x 3,2 m, na região norte do Estado de Mato Grosso. Os dados foram coletados em dois sítios, ruim (SR) e bom (SB), em povoamentos aos dois, três e quatro anos de idade, no município de Guarantã do Norte. Foram criados cenários de produção, em que a modelagem do crescimento e produção levou em consideração o crescimento intrínseco da espécie e a distribuição de frequência por classe diamétrica de interesse para laminação. Os modelos utilizados foram: de crescimento em diâmetro (Dap) em função da idade (I); de altura de inserção de copa (Hic) função do Dap; e de afilamento para estimativa do volume pelo polinômio de 5º grau. Em seguida, foi elaborado o cenário financeiro por meio dos critérios financeiros VPL (valor presente líquido), RBC (razão benefício custo), TIR (taxa interna de retorno) e CMPr (Custo médio de Produção) considerando as taxas de juros anuais de 5,50%, 8,75% e 13,65%. Os resultados mostraram que os modelos de crescimento em Dap (R²aj de 0,8341), os modelos de Hic (R²aj entre 0,9666 a 0,9527) e os de afilamento (o R²aj entre 0,8878 a 0,9146) tiveram bons ajustes estatísticos. Os critérios financeiros dos cenários demostraram-se atrativos, com exceção do povoamento aos quatro anos do SR. Observou-se que a maximização da produção foi dada pelo o incremento corrente anual (ICA) do povoamento ao 6º ano no SR (73,60 m³/ha/ano) e no SB (114,67 m³/ha/ano), e a maximização financeira pela TIR que ocorreu nos povoamentos entre o 6º e ao 7º ano no SR (43%) e entre ao 5º e ao 6º ano no SB (59%). Por fim, conforme os cenários de produção e os financeiros foi possível verificar que, com exceção do sítio ruim na idade de quatro anos, o plantio de paricá para laminação do presente estudo pode ser considerado um investimento rentável independente da qualidade o sítio sob as taxas de juros consideradas no trabalho.
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- 2017
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