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<i>Bt</i> cotton keeps Chinese bollworms in check

Widespread planting of genetically modfied insect-resistant Bt cotton has worked to “significantly control” outbreaks of cotton bollworms ( Helicoverpa armigera) in China this year, according to the country's national crop pest forecasting department. Plantings of Bt cotton account for over 90% of the crop in the country's fertile Yellow River and Yangtze River basins. The department estimates that second-generation bollworms will affect some 1.7 million ha of cotton crops nationwide this year, a reduction on last year's figure.


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