Insect Alert For

Corn Earworm

Risk Level:
No Risk
Affected Area:
No risk Full page
Alert Details

Corn earworm migration probabilities will return to a good portion of the corn-growing region as we move into the weekend and early next week. The overall weather pattern is predicted to largely hold in a northwest flow, however, so when migration chances do return, they are not expected to be as increased as they were in the last week or so when southwest flow was more dominant. Low risks return mainly to Kansas, Nebraska, western Iowa, and far western Missouri tomorrow night into Saturday morning as southerly winds may pose an isolated moth flight risk in this area. Low risks continue to expand north and especially east as we move through the upcoming weekend. Periodic shower and thunderstorm clusters along with south to southwest winds may allow isolated moth flights to occur as far east as Michigan, southwest Ontario, Canada, and Ohio by Saturday night into Sunday and also Sunday night into Monday. A few fields as far north as Minnesota and Wisconsin may also see some isolated moth flights on both nights. It appears a weak cool front may make it through a portion of the corn-growing region by late Monday or Tuesday of next week, so risks are confined to fields mainly south of I-80 and west of I-65 in Indiana at that time. Growers all across the corn-growing region are urged to continue to monitor traps and fields that are at susceptible stages to damage as moth flights have occurred in many spots in the last week to ten days.