Insect Alert For

Corn Earworm

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Alert Details

Corn earworm risks are predicted to remain in the Low category over the next four to five days as a continued northwest to southeast flow weather pattern remains in place across much of the central and eastern United States. Southerly wind events that are usually responsible for larger scale, more widespread corn earworm flights are much more limited in such weather patterns. As a result, only Low migration risks are predicted in the next several days and mainly in areas along and south of I-90 from South Dakota into Minnesota and southwest Wisconsin and west of the I-39 and US 51 corridors which runs from central Wisconsin south into Illinois. While some isolated moth flights may occur in the next week, growers should be more concerned with second generation moth appearances all across the corn-growing region. Some locally high moth captures will be possible over the next few weeks regardless if any moth flights can or do occur.