Insect Alert For

Corn Earworm

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

A very summer-like weather pattern is predicted for the next few days as very warm to hot and humid conditions are anticipated to the southeast of a cold front currently moving into the northern and western corn-growing regions. Rather stout south winds to the east of the front may lead to some scattered corn earworm moth flights especially into the northern corn-growing region over the next few nights, and a Moderate risk has been issued for northern and eastern Iowa, southeast Minnesota, Wisconsin, northern Illinois, and also into western lower Michigan tonight with the risk then focusing mainly across eastern Illinois, Indiana, Ohio, lower Michigan, and southern Ontario, Canada tomorrow night into Wednesday morning ahead of the cold front. Low risks cover much of the Great Lakes and eastern corn-growing region the next few nights where a Moderate risk is not in place. A break in the migration risk is expected mid-week, but another weather system brings back Low risks to fields from Nebraska and eastern South Dakota as far east as Lake Michigan by late week into next weekend. Growers with crops at susceptible stages to damage, especially fresh-market and processing growers, should continue to monitor traps and scout fields as additional moth flights are possible especially the next few nights, and previous flights earlier this month may be generating additional larvae at the present time.