Insect Alert For

Corn Earworm

Risk Level:
Low Risk
Affected Area:
Full page
Alert Details

An active weather pattern is predicted to continue into early next week across a good portion of the corn-growing region. Rather persistent south to southwest winds combined with periodic precipitation events may lead to isolated or scattered corn earworm flights into the corn-growing region. Low risks are in place tonight into tomorrow morning from Kansas and Nebraska east as far as southern lower Michigan and far western Ohio as south to southwest winds continue to increase and spread to the east. Low risks remain in the forecast tomorrow night into Saturday morning as far north as the Minneapolis/St. Paul, Minnesota area into Wisconsin and southwest lower Michigan and east into Indiana. Over the weekend and into early next week, Moderate corn earworm migration risks remain in the forecast initially for far northeast Kansas, northern Missouri, eastern Iowa, far southeast Minnesota, southern Wisconsin, and northern Illinois. As a cold front drops southeast late in the weekend, the Moderate risk area shifts south and east as well and is focused across portions of central and eastern Illinois, southwest lower Michigan, and northern and central Indiana. Low risks extend northeast into southern Ontario, Canada and into Ohio during this time. Numerous sweet corn and field corn fields are now at susceptible stages to damage, and growers of both grain and fresh-market fields should monitor traps closely over the next week as moth increases and activity are likely to occur.