Subventions publiques et décisions de production des agriculteurs une analyse microéconomique

Abstract : The thesis focuses on the impact of public subsidies on farmers’ production decisions. It first concentrates on the link between public subsidies and farm technical efficiency, and then investigates the potential effects of decoupled subsidies on farmers’ provision of ecosystem services. The influence of public subsidies on farmers’ behaviour is an important policy question in the context of the successive reforms of agricultural policies. There exists an extensive literature on this question, but this literature has three main shortcomings. First, the literature on the specific topic of the subsidy-efficiency nexus relies on a plethora of empirical models in which subsidies are often treated in an ad hoc way. Second, this literature is almost exclusively based on static modelling, while most agricultural production decisions are dynamic in nature. Finally, in the literature on the incentive effects of decoupled subsidies, the multitasking nature of farming activities has receivedlittle attention. The thesis addresses these issues, first, by undertaking a meta-analysis of the existing empirical findings on the subsidy-efficiency nexus, in order to control for effects arising from the various methodologies used. The results show that modelling subsidies as outputs, or using the ratio of subsidies to farm revenue as a subsidy proxy, could lead to misleading results. Then, the thesis develops and estimates a dynamic frontier model; for comparison purposes, the static counterpart of this model is also estimated. The results indicate that the static framework overestimates the (detrimental) effect of subsidies on farm technical efficiency. Finally, the thesis develops and tests a multitasking agency model, indicating that decoupled subsidies could raise farmer's incentives to provide environmental services and ecologically sound production
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Jean-Joseph Minviel. Subventions publiques et décisions de production des agriculteurs une analyse microéconomique. Sociologie. Agrocampus Ouest, 2015. Français. ⟨NNT : 2015NSARE040⟩. ⟨tel-01362063⟩

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