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Corn Rootworm IPM

Regional Working Group

Assess roots now to evaluate corn rootworm management strategies

Western and northern corn rootworm are serious pests of corn throughout the Corn Belt. We recommend that farmers scout every cornfield every year, regardless of the management tactic(s) used, to evaluate management decisions and prepare for next year. It is a good idea to scout for larvae early in the season, assess root injury when larval feeding wraps up, and monitor adults later in the season. Corn rootworm adults have started emerging throughout Iowa, which is an excellent time to evaluate root injury.