Insect Alert For

Western Bean Cutworm

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

The annual western bean cutworm generational flight is winding down across much of the corn-growing region. Trap counts and field reports across much of the corn-growing region are showing declining numbers with some isolated higher population areas especially across the Great Lakes region and into Canada. Even there, however, peak flight appears to have subsided with counts dropping. High risks remain in place west of the Mississippi River from northeast Nebraska into northern Iowa, southeast South Dakota, and southern Minnesota through tomorrow especially for isolated areas that may still be seeing pressure from this insect. High risks remain in place through the middle of next week from central and northern Wisconsin east into northern lower Michigan and southern Ontario, Canada. Moderate risks are in place from northeast Nebraska into southeast South Dakota, southern Minnesota, northern Iowa, Wisconsin, Michigan, northern Ohio, northwest Pennsylvania, northwest New York, southern Ontario, and also southwestern Quebec, Canada through the middle of next week. Risk areas and levels will be on the decline in the week to ten days ahead as moth counts and activity subside.