Armyworms and Cutworms Invade Kansas, Threatening Crop Yields

Fall armyworms have been increasing in number across Kansas since mid-June, and pheromone trap counts continue to rise statewide through September.

Another potential fall pest, army cutworms, have been detected in western Kansas traps since early September. These moths begin migrating into the state from their summering locations in the Rocky Mountains, feeding on crops like alfalfa, wheat, and triticale.

Crop producers should be aware that female army cutworm moths can lay up to 1,000 eggs or more, resulting in significant caterpillar activity. It's essential to scout fields weekly for these pests, especially since warmer weather is forecasted.