A crop farm indicators modelling chain to assess farmer's decision in response to socio-economic scenarios

Contact: Hatem.Belhouchette@supagro.inra.frInternational audienceBio-economic models can be used to assess the impact of policy and environmental measures with economic and environmental indicators. Focusing on agricultural systems, the strategies adopted by farmers in term of cropping systems and the associated crop managements at field level are essential in such studies. The objective of this paper is to present a study using such models to assess impacts of the nitrate directive in the Midi-Pyrenees region (France) by analysing, at farm and regional level, the farm income and three environmental indicators: nitrate leaching, erosion and water consumption. In addition, several intermediate variables are calculated and analysed at field level for a better comprehension of the farmer’s strategie