Insect Alert For

Corn Earworm

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

Low corn earworm migration risks are in the forecast on a nightly basis through the middle portion of next week as south to southwest winds return to at least the western and central portions of the corn-growing region. Low pressure systems should continue to develop in the western Plains but will have a difficult time moving east due to high pressure in the Great Lakes and eastern corn-growing region. As a result, Low migration risks mainly focus initially across the Plains states for the next two nights, but eventually do spread to the east into Wisconsin and Illinois by Sunday night into Monday. Risks largely remain across western portions of Wisconsin and Illinois and points to the west as low pressure deepens in southern Canada and North Dakota moving into the middle portion of next week. Isolated flights will be possible through this time mainly due to a less favorable source region in the Plains and overall lower wind speeds. Growers should continue to monitor traps and scout, however, as recent flights may be inhabiting fields at this time.