Insect Alert For

Corn Earworm

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

An active week to potentially ten days of weather is expected for a good portion of the corn-growing region as southwesterly flow and a more active storm track returns. As a result, Low corn earworm migration risks are also in the forecast despite the late point in the growing season as some moth flights could still impact processing and fresh market fields primarily focused in the northern reaches but also in some areas further south. Low risks are predicted on increasing southerly flow tonight into tomorrow morning from northern Kansas and northwest Missouri as far as central Minnesota and western Wisconsin. Low risks then extend east into Wisconsin and Illinois tomorrow night as high pressure moves slightly further east and southerly winds envelop that area, as well. Low risks are then found across southern lower Michigan and into northern Indiana and northwest Ohio by Saturday night into Sunday as the first cold front moves east. Already by early next week, the next and potentially stronger weather system may be developing in the Plains states, so Low risks are back in place mainly west of I-57 by next Monday night. Growers with crops still at susceptible stages should continue to monitor traps and scout fields as additional moth flights will be possible despite what the calendar says.