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Have Biotech Seeds Increased Maize Yields?

Author

Listed:
  • Xu, Zheng
  • Hennessy, David A.
  • Moschini, GianCarlo

Abstract

Corn yield is determined by soils, weather, seed used and other technology choices. Global population and per capita income growth trends as well as demand from the energy sector have placed great stress on cropland use. Global cropland acres and/or yield per acre will need to increase. Whether new seed technologies have enhanced corn yield is a controversial issue. We study U.S. county corn yields 1964-2008, controlling for location effects, fertilization technologies and weather. We find evidence that trend yield growth has been fastest in the Central Corn Belt, genetic modification technologies have increased trend yield, and this increase has been largest in the Central Corn Belt.

Suggested Citation

  • Xu, Zheng & Hennessy, David A. & Moschini, GianCarlo, 2010. "Have Biotech Seeds Increased Maize Yields?," 2010 Annual Meeting, July 25-27, 2010, Denver, Colorado 61303, Agricultural and Applied Economics Association.
    • Handle: RePEc:ags:aaea10:61303
    DOI: 10.22004/ag.econ.61303
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