Corn Earworm – Vegetable Crops Hotline

Corn Earworm

Corn earworm moth catches continue to be quite low in most areas of the state. Typically, we see an upsurge in activity during the first two weeks of August. With populations as low as they are and most field corn still with attractive silks, sweet corn growers can get by with minimal spray programs now. However, growers should be diligently watching their pheromone traps for the next generation to arrive. It is not unusual for trap catches to go from near zero to in the hundreds per night literally overnight. This type increase if usually associated with some sort of tropical disturbance in the Gulf of Mexico but can also occur when storm fronts move up from southern locations.

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