Insect Alert For

Corn Earworm

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

Corn earworm migration risks are predicted to return to at least portions of the corn-growing region later this week and next weekend as a low pressure system moves through the area. No risk is predicted tonight into tomorrow morning, but Low risks do return to the far western Plains states (western Kansas into western and central Nebraska) tomorrow night into Thursday morning as high pressure edges to the east and southerly winds commence across the Plains in response to developing low pressure east of the Rocky Mountains. The Low risk expands north and east into southern South Dakota and western Iowa by Thursday night into Friday and then across much of the corn-growing region to the south of I-90 and I-94 and mainly west of I-75 in southern lower Michigan and Ohio. Growers are advised to continue to scout fields as earlier flights this summer may be resulting in later generations, and also that corn earworms currently in the mid-south and southern states are finding less desirable crops in that area and flight to the north are now becoming more likely when a favorable weather pattern is in place. The late week weather pattern is not predicted to be optimal for larger scale flights but conditions will be monitored closely, and at least isolated flights are possible especially to the central and southern reaches of the Midwest.