The black cutworm (BCW) is a migratory pest that cuts corn seedlings and feeds on leaf tissue. Scouting for BCW larvae helps to determine if an insecticide application will be cost effective. When to scout for BCW caterpillars is based on the peak flight of moths and accumulating degree days after the peak flight. A peak flight occurs when eight or more moths are caught over two nights in a wing style trap.
Iowa State University
Sisson, Adam and Jesse, Laura C.H., "Black Cutworm Scouting 2015" (2015). Integrated Crop Management News. 320.
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