These caterpillars can cause extensive damage below the crop canopy before they are detected. Controls are suggested when 4 to 5 larvae per square foot are found and feeding is heavy on the lower leaves. It is important to protect the flag leaf.
Most all insecticides labeled for small grains will provide adequate control. They are not as hard to kill as fall armyworms in cotton. However, good coverage is important, especially when making applications by air.