Insect Alert For

Corn Earworm

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Alert Details

A warmer and more humid weather pattern on increasing south to southwest winds is expected to once again envelop much of the corn-growing region over the next several days. A cold front is likely to pass through the area in the Sunday-Monday time frame. Before the front passes, however, south to southwest winds and precipitation prospects especially along the front may lead to some isolated corn earworm migration risks especially for the southern two-thirds or three-quarters of the corn-growing region. Low risks are predicted tonight into tomorrow from the Plains east to Lake Michigan and into Illinois, with the risk then spreading east into the southern Great Lakes region and eastern corn-growing region by tomorrow night and continuing into the weekend. The risk area should focus mainly east of I-35 by Sunday into Monday as the cold front begins pushing southeast. Host plants are still at an attractive growth stage in mid-south and southern source regions especially given overall good plant health/condition in that area, so only isolated flights are anticipated further north at this time. Growers with crops at susceptible stages to corn earworm damage, however, should monitor traps and scout fields as some moths may have arrived last weekend and additional moths may still arrive this weekend.