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Focus on Corn

PMN Proceedings

Resistance Evolution and IRM for Rootworm

Corn Rootworm Management
in the Transgenic Era

December 2014

By Aaron J. Gassmann, Ph.D.
Associate Professor of Entomology
Iowa State University
Email: aaronjg@iastate.edu

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Summary: Resistance to Bt corn by western corn rootworm has presented serious management challenges to farmers and crop consultants in the Corn Belt. This talk reviews what is known about the development of Bt resistance in the field, and the consequences of resistance for feeding injury and pest survival during future growing seasons. The presentation discusses approaches for managing western corn rootworm and the development of Bt resistance by this pest.

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