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Environmental Regulation and Farm Productivity: Evidence from Minnesota's Buffer Law

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  • Khanal, Ajit
  • Legrand, Nicolas

Abstract

This paper studies whether Minnesota’s Buffer Law affected county-level corn and soybean yields. Using a staggered difference-in-differences design that compares Minnesota border counties to neighboring border counties, we estimate dynamic effects while controlling for weather, drought, fertilizer use, and adoption intensity of federal conservation programs. We do not find consistent evidence that the law reduced average yields in the later post-treatment periods. The current results are preliminary and should be interpreted cautiously pending additional robustness and sensitivity analysis.

Suggested Citation

  • Khanal, Ajit & Legrand, Nicolas, 2026. "Environmental Regulation and Farm Productivity: Evidence from Minnesota's Buffer Law," 2026 Annual Meeting, July 26 - 28, 2026, Kansas City, Missouri 404481, Agricultural and Applied Economics Association.
    • Handle: RePEc:ags:aaea26:404481
    DOI: 10.22004/ag.econ.404481
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    References listed on IDEAS

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    1. Kirill Borusyak & Xavier Jaravel & Jann Spiess, 2024. "Revisiting Event-Study Designs: Robust and Efficient Estimation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 91(6), pages 3253-3285.
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