Researchers Validate Resistance Management Practices for Bt-crops

Crops genetically engineered with the toxin Bacillus thuringiensis (Bt) have been grown in the United States since 1996. Since then, concerns about pest resistance have grown, mainly because of observed resistance of the cotton bollworm (Helicoverpa zea), a major pest of cotton. According to a 2009 published study in the Journal of Economic Entomology, insect resistance to Bt can be monitored and prevented.

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