CORN BORER populations in the Midwest are very low, according to Michael Gray, extension entomologist, University of Illinois. He credits this to the high use of Bt corn hybrids. However, he doesn't expect the corn pests to become extinct.

“The European corn borer has a wide range of hosts on which to feed,” Gray says. “The corn rootworm has a narrower range of hosts, but those hosts include other grasses such as foxtail. So I expect these pests to remain in the landscape, only at lower levels. But they won't become extinct.” — Mark Moore