Insect Alert For

Corn Earworm

Risk Level:
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Alert Details

Low corn earworm risks are expected to persist through the next five days across especially the central and western portions of the corn-growing region. A persistent area of high pressure is expected to continue to meander across the central and eastern parts of the country through at least the early to middle portions of next week. As a result, south to southwest winds, albeit somewhat light to occasionally moderate in strength, should continue to provide the opportunity for primarily isolated corn earworm moth flights. The primary risk area tonight into tomorrow morning is across Nebraska and Kansas with the risk then spreading east and north into South Dakota, Minnesota, far western Wisconsin, Iowa, and Missouri tomorrow night into Friday. Then, fields mainly west of Lake Michigan and also into Illinois are at risk through the extended period. Some risk is also present in southwest Michigan and into Indiana but high pressure may keep southerly winds from reaching into this area until sometime next week. Late planted fields, fresh market, and processing crop growers should continue monitoring their fields and treat as needed in the next week.