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Murviel-lès-Montpellier, France

Belhouchette H.,IAMM | Louhichi K.,French National Institute for Agricultural Research | Therond O.,French National Institute for Agricultural Research | Mouratiadou I.,University of Edinburgh | And 3 more authors.
Agricultural Systems | Year: 2011

Bio-economic models can be used to assess the impact of policy and environmental measures through economic and environmental indicators. Focusing on agricultural systems, farmers' decisions in terms of cropping systems and the associated crop management at field scale are essential in such studies. The objective of this paper is to present a study using a bio-economic model to assess the impact of the Nitrate Directive in the Midi-Pyrenees region (France) by analyzing, at the farm scale, farm income and three environmental indicators: nitrate leaching, erosion and water consumption. Two scenarios, the 2003 CAP reform (baseline scenario) and the Nitrate Directive (policy scenario), with a 2013 time horizon, were developed and compared for three representative arable farm types in the Midi-Pyrenees region. Different types of data characterizing the biophysical context in the region (soil, climate), the current cropping systems (rotation, crop management) and farm resources (irrigated land, labor) were collected to calibrate and run the models. Results showed that the implementation of the Nitrate Directive may not affect farm income. However, significant modifications to cropping systems and crop allocation to soil types were simulated. Contrary to expectations, nitrogen leaching at the farm scale did not change. Overall water consumption increased and soil erosion decreased due mainly to a modification in cropping patterns and management by soil type. This study provides an example of unanticipated effects of policy and trade-offs between environmental issues. © 2010 Elsevier Ltd.

Algeria implements since the beginning of the years 90, a politics regarding to intensify the local dairy production coming from the dairy bovine farm. This present item makes obvious the results of the political public one assigned to the local dairy production while analyzing the put measures in execution and its effects on the evolution of the dairy farm in one of the dairy basins, the one of the wilaya of Souk Ahras situated to the Northeast of Algeria.

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