![]() More than 45 days are required for eggs to develop into larvae and adult moths. The black cutworm species ranges from light gray to black in color, and larvae are 1-1/2 inches long when fully grown. Even though severe infestations rarely occur, black cutworm should be on a farmer’s list of corn insect pests to monitor.īlack cutworms are a common corn pest throughout the Corn Belt and in the South. Research shows that just one black cutworm larva feeding on corn can cut through as many as four young corn stalks in its lifetime.īlack cutworms are most often found in corn and cotton, yet it can cause problems in wheat, tobacco and some vegetable crops. ![]() Although several cutworm species can attack corn across the United States, the black cutworm ( Agrotis ipsilon spp.) poses the most significant economic threat.
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