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311 results on '"Tei, Francesco"'

105. Apparent N Balance in Organic and Conventional Low Input Cropping Systems

Author

Boldrini, Arianna, Benincasa, Paolo, Tosti, Giacomo, Tei, Francesco, and Guiducci, Marcello

Subjects
Farm nutrient management
Abstract

The determination of nutrient surplus is one of the indicators of potential N losses from the agricultural system to the environment. An experiment was started in 1998 in Central Italy to evaluate the soil surface N balance of an organic and a conventional low input cropping system over a long term crop rotation. Results at the end of a 6-year crop rotation showed an estimated N surplus in organic system 1.3-2 times higher than in conventional system while N content in the top soil was not different in the two systems, so that organic system should have involved a higher N loss from that soil layer.

Published
2007

124. Weeds and weed management in peas - a review

Author

Uludag, A., Bohren, C., Bulcke, R., Demirci, M., Dobrzanski, A., Froud Williams, R. J., Hoek, H., Rocha, F., Stagnari, F., Tei, Francesco, Verschwele, A., and Zaragoza, C.

Subjects
IWM, peas, weed
Published
2003

125. Weeds and weed management in processing tomato

Author

Tei, Francesco, Montemurro, P., Baumann, D. T., Dobrzanski, A., Giovinazzo, R., Kleifeld, Y., Rocha, F., Rzozi, R. S., Sanseovic, T., and Zaragoza, C.

Subjects
herbicides, Lycopersicon esculentum Mill, Integrated Weed Management (IWM)
Published
2003

141. Green manuring effect of pure and mixed barley - hairy vetch winter cover crops on maize and processing tomato N nutrition

Author

Tosti, Giacomo, Benincasa, Paolo, Farneselli, Michela, Pace, Roberta, Tei, Francesco, Guiducci, Marcello, Thorup-Kristensen, Kristian, Tosti, Giacomo, Benincasa, Paolo, Farneselli, Michela, Pace, Roberta, Tei, Francesco, Guiducci, Marcello, and Thorup-Kristensen, Kristian

Abstract

Adopting mixtures between legumes and non legumes can be an efficient tool to merge the advantages of the single species in the fall-sown cover crop practice. Nevertheless there is a lack of information on how the species proportion may affect N accumulation and C/N of the cover crops and how this can influence the N uptake and N status of different subsequent summer cash crops. In this study the N effect of barley (Hordeum vulgare L.) and hairy vetch (Vicia villosa Roth.) grown in pure stands or in mixtures with different sowing proportion was tested on maize (Zea Mays L.) and processing tomato (Lycopersicon esculentum Mill.). Cover crop N accumulation and C/N ratio were monitored during the whole growing cycle, and CO2 flux from the soil was measured after their incorporation into the soil. N status of the following cash crops was evaluated by comparing the observed data with the appropriate critical N dilution curves. The results highlight the effectiveness of mixtures for the management of the winter cover crop practice. In the two considered years, the species proportion influences the aboveground biomass (ranging from 2.90 to 5.94 Mg ha-1) and N accumulation (ranging from 73.8 to 183.2 kg ha-1) of the mixtures. The legume component, even at low proportion, increased the N accumulation of the cover crop of 148% (in 2006) and 134% (in 2007) compared to pure stand barley. Also the biomass quality of the cover crops was greatly affected by species proportion (e.g. C/N ranging from 12.0 to 18.9) and this aspect showed a clear effect on the N availability for the subsequent crop. N effect (Neff) of the different cover crop mixtures (especially those with high barley proportions) brought tomato much closer to the critical N value than they did with maize. The basis of the relationship between cover crop C/N and Neff was confirmed, so mixtures can be used to adjust the extent and timing of mineralisation of the incorporated biomass to the subsequent

Published
2012

146. Weeds and Weed Management in Onion - a review

Author

Tei, Francesco, Ascard, J., Baumann, D. T., Caussanel, J. P., Dobrzanski, A., FROUD WILLIAMS, R. J., Kleifeld, Y., PARDO IGLESIAS, A., Rocha, F., Ruuttunen, P., Rzozi, R. S., Sanseovic, T., and Suso, L.

Published
1999

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