Black cutworm (BCW) is a migratory pest that cuts and feeds on early vegetative-stage corn. Black cutworm moths arrive in Iowa and other northern states with spring storms each year. These moths lay eggs in and around crop fields, and emerging BCW larvae can cut seedling corn. This pest is sporadic, making it essential to scout fields to determine if management is needed. Scouting for BCW larvae helps to determine if an insecticide application will be cost effective. This year, delayed corn planting can coincide with emergence of BCW larvae so scouting should be done early on to protect seedlings in these fields.
Iowa State University
Dean, Ashley; Hodgson, Erin W.; and Sisson, Adam, "Scouting for Black Cutworm 2019" (2019). Integrated Crop Management News. 2535.
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