Don’t Farm So Close to Me: Testing Whether Spatial Externalities Contributed to the Emergence of Glyphosate-Resistant Weed Populations

Dallas Wood

No 170716, 2014 Annual Meeting, July 27-29, 2014, Minneapolis, Minnesota from Agricultural and Applied Economics Association

Abstract: The emergence of glyphosate-resistant weed populations threatens the economic viability of genetically modified, glyphosate-resistant crop varieties. This could not only have serious consequences for the welfare of U.S. farmers, but also for environmental quality as farmers turn to more toxic herbicides. The purpose of this paper is to better understand what economic factors have contributed to the rise of resistant weeds. Specifically, I investigate whether externalities associated with weed mobility have led farmers to apply more glyphosate than they would otherwise. To do this I develop a game theoretic model of how farmers choose the amount of glyphosate they apply to their fields and use this model to derive testable hypotheses for how these choices might change when spatial externalities are present. Next, I use state-level data to test these hypotheses.

Keywords: Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Production Economics (search for similar items in EconPapers)
Pages: 15
Date: 2014-05-28
New Economics Papers: this item is included in nep-agr and nep-env
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Persistent link: https://EconPapers.repec.org/RePEc:ags:aaea14:170716

DOI: 10.22004/ag.econ.170716

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