Corn Earworm
An active and more summerlike weather pattern is expected for much of the corn-growing region over the next week. Very warm to even hot temperatures are expected on increasing south to southwest winds during the period. Such a pattern bodes well for corn earworm migration, but we are looking at a limited number of plants at critical growth stage or where corn earworms could cause damage as well as host plants being at a favorable growth stage in the mid-south and southern states source region right now. As a result, despite a very favorable pattern for migration, risks are only being kept in the Low category tonight into tomorrow as a cold front moves southeast. Low risks extend from Kansas, Missouri, and western Kentucky as far north as southeast Minnesota, southern Wisconsin, and into southwest lower Michigan. Low risks then return by Saturday night into Sunday and into early next week for a large portion of the corn-growing region as south to southwest winds and temperatures increase again. Growers with crops at susceptible stages to damage may want to monitor traps as we usually see at least some moth flights, sometimes locally intense but rather isolated, occur in such a pattern in late May into June.

