Badly infested leaves gradually lose their normal color and take on a yellowish or brownish cast. Such an appearance Is most often confused with plant diseases, nitrogen deficiency or dormancy of older leaves. Close examination revealing presence of mites or their webbing will establish the true cause of abnormal growth. Spider mites never have a winged stage. They start from a globular egg bid on the underside of leaves.
Young mites are pale yellow, while adult mites are a rich dark red.
All stages are usually found on the same leaf. In warm weather. A much longer time Is required during cool weather. As mites never become completely dormant, a mild prolonged winter allows for their buildup. Consult N. C. Agricultural Chemicals Manual.