Bt Corn Refuge Requirement Confusion

Ric Bessin, EntomologyThere may be considerable confusion regarding refuge requirements in 2010 for Bt corn. In the past in Kentucky all we need to understand was that the minimum refuge size needed to 20% of the total corn acreage. If there was a Bt toxin to control corn rootworm, then the refuge needed to be within the same field or immediately adjacent to the Bt field. Immediately adjacent to