Usually not a problem in Missouri. Be sure infestation is economic. Comments Spider mites Yellow to brown areas near leaf veins and petiole. Silver gossamer webbing on underside of infested leaves. Usually a problem in dry weather.
Mites move into cotton from border vegetation, often after mowing.
Mites are spread by equipment, people or animals moving through a field. 1.2 Armyworm Defoliation and feeding on squares, bolls or blooms. Fruit damage is similar to that of bollworm. Bollworm Feeding on fruit including squares, flowers or bolls. No resistance to currently recommended insecticides is known for bollworm in Missouri.