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Master Thesis

Expérimentation et évaluation de systèmes de culture économes en intrants en production porcine en Bretagne

Abstract : Since 2009, three cropping systems have been tested at the experimental agricultural station of Crécom. The difference between these three systems is the kind of effluent used : liquid manure, fertilizer or mixed. The aim of this project is environmental protection : 50% reduction of the use of pesticides, reduction in nitrogen and phosphorus transfer risks, without deteriorating the profitability and the working conditions. The durability assessment covers the first three years of the crop rotation (corn/wheat/rapeseed/triticale). Moreover, an agronomic diagnostic of rapeseed is made in order to improve this crop which did not reach the goals during the previous years. The aims, regarding the 50% reduction of the use of pesticides and the limitation of nitrogen and phosphorus transfer risks, are reached. However, the use of herbicides is high and the phosphorus results are not balanced for all campaigns. Working conditions and economical profitability are partially preserved. Two solutions could be tested for rapeseed : the hoeing or the use of legumes with rapeseed. In order to reduce the working time, the no-till farming and a decrease in the number of mechanical interventions could be applied. As for the rapeseed agronomic diagnostic, the campaign yields were higher than expected. The decision rules for this crop have thus been entirely validated. However, yield variations were noted because of pest attacks. The effects of advancement of sowing dates and would be tested to limit these attacks.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-00905374
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Submitted on : Monday, November 18, 2013 - 10:54:45 AM
Last modification on : Monday, July 6, 2020 - 3:38:21 PM
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  • HAL Id : dumas-00905374, version 1

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Enora Guillossou. Expérimentation et évaluation de systèmes de culture économes en intrants en production porcine en Bretagne. Sciences agricoles. 2013. ⟨dumas-00905374⟩

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