The largest problems with corn rootworm are in areas where continuous corn is grown. Where crop rotations are used in central Illinois, for example, western corn rootworm populations are “pretty low,” said Nick Seiter, University of Illinois crop scientist.
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Corn rootworm still thrives in continuous corn
The best option for managing rootworm (western, left, and northern, right) is a corn-to-soybean rotation. If that is not possible, a soil insecticide is the next top choice.
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