Insect Alert For

Corn Earworm

Risk Level:
Affected Area:
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Alert Details

Persistent south to southwest winds and increasing heat and humidity will lead to several nights of corn earworm migration risks into at least portions of the corn-growing region. The overall risk level, however, is being kept in the Low category given crop stage, time of year, and also taking into account host plants in the source region are still at attractive stages to corn earworms, so the number of moths that would want to move north is still likely very low. Low risks are in place tonight into tomorrow morning mainly across Kansas, Nebraska, western Iowa, and far western Missouri. The risk area expands slightly further east tomorrow night to just east of the Mississippi River into Illinois, and finally by the weekend, a few moths could make their way as far north as into Minnesota, Wisconsin, and east to near the Illinois/Indiana border. Once a cold front passes through much of the corn-growing region early next week, the risk will diminish at that point.