Source:  NCSU COOPERATIVE EXTENSION, 8/8/22


Corn earworm, also known as bollworm and tomato fruitworm, is an important pest that causes economic damage to a wide variety of globally important crops, such as corn, cotton, sorghum, vegetables, tobacco, and soybeans. In the Southeastern region of the US, this pest causes major yield loss in cotton and soybeans, but usually not corn. However, the economic threshold for soybeans depends on crop price, cost of control, sampling method, and row width (for more information use the Corn Earworm Threshold Calculator for Soybeans). Usually, the threshold increases when prices are below $10/bushel and at lower levels of earworm feeding, soybean can compensate for potential yield loss.

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