Two-spotted spider mite: Biology and ecology

Two-spotted spider mites have a wide host range and will infest field crops, ornamentals and weeds. Infestation typically start at field margins and progressively move to the center if weather conditions are favorable. Spider mites typically flourish in hot, dry weather. Fungal pathogens that suppress spider mites during high humidity and mild temperatures are less effective against mites during very dry and hot conditions. Under ideal weather, spider mites may produce 5-10 generations in soybean every year.