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Do agri-environmental schemes help reduce herbicide use? Evidence from a natural experiment in France

Laure Kuhfuss and Julie Subervie

No 2015-05, Discussion Papers in Environment and Development Economics from University of St. Andrews, School of Geography and Sustainable Development

Abstract: Agri-environmental schemes (AES) are a central component of the environmental policy of the European Union. Despite widespread interest and investment in AESs, few of these pro-grams have been carefully evaluated and doubts are often expressed about the effectiveness of voluntary programs. The purpose of this article is to estimate the additional effects of AESs targeting nonpoint source pollution from pesticides, focusing on one emblematic case study: herbicide use in vineyards. We use original data collected from winegrowers participating in AESs in the south of France, and we use exogenous variation in the timing of the implementation of the AESs as a natural experiment. We show that the quantity of herbicides used by participants in the program in 2012 was around 30% below what they would have used without the program, while the impact was significantly higher in 2011 - around 50% - presumably because of higher weed pressure. Although significant, these impacts remain smaller than what had been expected by policy makers. Focusing on the “zero herbicide between the vine rows” option, which is both the most often chosen as well as the least stringent among the measures, we moreover show the presence of windfall effects. Simple extrapolation of these results suggests that this level of effectiveness may not be sufficient to ensure water quality in the watersheds targeted by the AES.

Keywords: Agri-environmental scheme; water quality; nonpoint source pollution; herbicides; pesticides; natural experiment. (search for similar items in EconPapers)
JEL-codes: Q15 Q18 Q25 Q28 Q53 (search for similar items in EconPapers)
Pages: 27 pages
Date: 2015-02
New Economics Papers: this item is included in nep-agr and nep-env
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Citations: View citations in EconPapers (5)

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Working Paper: Do agri-environmental schemes help reduce herbicide use? Evidence from a natural experiment in France (2015)
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Working Paper: Do agri-environmental schemes help reduce herbicide use? Evidence from a natural experiment in France (2015)
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