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A decade of Bt cotton in Chinese fields: Assessing the direct effects and indirect externalities of Bt cotton adoption in China

Abstract

The objective of this study is to examine whether or not the gains from reduced spraying for bollworms are being sustained more than one decade after the initial adoption in 2007. Based on farm-level data collected by the authors in 1999–2007 in 16 villages from 4 provinces, this study shows that insecticides applied for controlling bollworms have declined. This analysis supports Chinese policy makers’ decision to not require refuges of non-Bt cotton fields. It also suggests that past studies may have underestimated the benefits from adopting Bt technology.

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Correspondence to JiKun Huang.

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Huang, J., Mi, J., Lin, H. et al. A decade of Bt cotton in Chinese fields: Assessing the direct effects and indirect externalities of Bt cotton adoption in China. Sci. China Life Sci. 53, 981–991 (2010). https://doi.org/10.1007/s11427-010-4036-y

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Keywords

  • biotechnology
  • Bt cotton
  • insecticide
  • sustainability
  • externalities
  • China