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Corn Earworm Puts Most Locations on Spray Schedule

European Corn Borer Larvae on Pre-tassel Stage Corn

European Corn Borer Larvae on Pre-tassel Stage Corn; photo by David Handley

Corn harvest is in full swing across most of Maine after the warm weekend weather. Insect pressure has increased, especially from corn earworm with many locations being placed on 4-day spray intervals. European Corn Borer pressure has remained low with the exception of a few northern locations, and fall armyworm appears to be slightly on the rise, but hasn’t exceeded thresholds anywhere. With the prospect of southerly thunderstorms throughout most of the next week, insect pressure is not expected to decrease.

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