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Intensive cotton farming technologies in China: Achievements, challenges and countermeasures

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Field Crops Research

Elsevier BV

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      Most cited references 29

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      Mirid bug outbreaks in multiple crops correlated with wide-scale adoption of Bt cotton in China.

      Long-term ecological effects of transgenic Bacillus thuringiensis (Bt) crops on nontarget pests have received limited attention, more so in diverse small holder-based cropping systems of the developing world. Field trials conducted over 10 years in northern China show that mirid bugs (Heteroptera: Miridae) have progressively increased population sizes and acquired pest status in cotton and multiple other crops, in association with a regional increase in Bt cotton adoption. More specifically, our analyses show that Bt cotton has become a source of mirid bugs and that their population increases are related to drops in insecticide use in this crop. Hence, alterations of pest management regimes in Bt cotton could be responsible for the appearance and subsequent spread of nontarget pests at an agro-landscape level.
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        The evolution of cotton pest management practices in China.

         Chao Wu,  Yiru Guo (2004)
        The development of cotton pest management practices in China has followed a pattern seen for many crops that rely heavily on insecticides. Helicoverpa armigera resistance to chemical pesticides resulted in the unprecedented pest densities of the early 1990s. Transgenic cotton that expresses a gene derived from the bacterium Bacillus thuringiensis (Bt) has been deployed for combating H. armigera since 1997. The pest management tactics associated with Bt cotton have resulted in a drastic reduction in insecticide use, which usually results in a significant increase in populations of beneficial insects and thus contributes to the improvement of the natural control of some pests. Risk assessment analyses show that the natural refuges derived from the mixed-planting system of cotton, corn, soybean, and peanut on small-scale, single-family-owned farms play an important function in delaying evolution of cotton bollworm resistance, and that no trend toward Bt cotton resistance has been apparent despite intensive planting of Bt cotton over the past several years.
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          Biotechnology as an alternative to chemical pesticides: a case study of Bt cotton in China

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            Author and article information

            Journal
            Field Crops Research
            Field Crops Research
            Elsevier BV
            03784290
            January 2014
            January 2014
            : 155
            :
            : 99-110
            10.1016/j.fcr.2013.09.017
            © 2014

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