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Transgenic technology adoption and on-farm varietal diversity

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  • Krishna, Vijesh V.
  • Zilberman, David
  • Qaim, Matin

Abstract

Transgenic pest-resistant varieties are hypothesized to reduce farmers’ demand for on-farm diversity through an act of substitution, as both serve as production risk reducing instruments. This adverse agro-biodiversity impact of technology adoption might be partially counteracted by an expanding seed sector, supplying a large number of transgenic varieties. The case of Bt cotton in India is taken for empirical illustration. The production function analyses show that both Bt technology and on-farm varietal diversity enhance yield, while reducing the production risk. With few Bt varieties available in the first years, technology adoption entailed a reduction in on-farm varietal diversity. This effect, however, was partially offset by more Bt varieties becoming available over time.

Suggested Citation

  • Krishna, Vijesh V. & Zilberman, David & Qaim, Matin, 2009. "Transgenic technology adoption and on-farm varietal diversity," 2009 Conference, August 16-22, 2009, Beijing, China 51750, International Association of Agricultural Economists.
  • Handle: RePEc:ags:iaae09:51750
    DOI: 10.22004/ag.econ.51750
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    References listed on IDEAS

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