CROPS NEWS
Rotation Resistant Rootworm
Tue Sep 3, 2013 02:44 PM CDT

DECATUR, Ill. (DTN) -- Western corn rootworms have once again out-maneuvered man and science. Last week, University of Illinois entomologists Michael Gray and Joseph Spencer announced finding significant root injury from western corn rootworm larvae in first-year cornfields that had been planted to Bt rootworm hybrids expressing the Cry3Bb1 protein.

The fields were located in Illinois' Livingston and Kankakee counties.

A variant of the western corn rootworm has been present in east-central Illinois, parts of Indiana and southern Wisconsin since the mid-1990s. It has shown the ability ...

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