Analyse des relations entre pratiques agricoles, flore adventice et production agricole

Abstract : In the current context, cropping systems are expected to be doubly efficient. They must be more productive and less polluting. Today it is difficult to say whether it is possible to design such a system because of the trade-off between the two performances, especially for weed management. Then it is to understand the relationship between farming practices, weed flora and crop production. Direct effects of farming practices and weed flora on crop production and of farming practices on weed flora are well known but indirect effects of farming practices on crop production via weed flora modifications are not. It is the objective of this report. The data are from farmers’ interviews (farming practices and yield) and weed surveys on the fields of Fénay study area. Initially relationships between different variables are studied by explanatory analyses. Secondly the complexity of the interactions of the system leads to use a Partial Least Square Path Modeling method more complex and global. Results show a positive indirect effect of farming practices on crop production equivalent to 1/7th of the positive direct effect.
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Master thesis
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Mélanie de Waele. Analyse des relations entre pratiques agricoles, flore adventice et production agricole. Sciences de l'environnement. 2015. ⟨hal-01827732⟩

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