Insect Alert For

Corn Earworm

Risk Level:
No Risk
Affected Area:
No risk Full page
Alert Details

A predominantly northwest flow weather pattern is expected to control the weather across much of the corn-growing region in the next week, with the hot and humid weather confined to the southern United States. As a result, corn earworm migration risks for the time being are lower but are still existent as weather systems moving through the progressive northwest flow may bring some isolated moth flights into portions of the area prior to cold front passages. Low risks are predicted tomorrow night into Wednesday mainly south of I-80 and west of the Mississippi River in Nebraska, Iowa, Missouri, and Kansas as southerly winds increase ahead of the first expected system this week. Low risks then focus from Missouri and Illinois east into the southern Great Lakes and eastern corn-growing region as a cold front moves east by later Wednesday into Thursday. A brief break in the migration risk is expected late week before another system moves in by the weekend. Right now, best chances for migration do appear to favor the eastern half of the corn-growing region in the next week. Growers are encouraged to monitor traps and scout fields regularly in the next week or so given crop stage and more advanced crops in the mid-south becoming less attractive to corn earworms so they will want to fly north to survive.