Space trees to provide adequate air circulation. Keep down weeds. Remove and destroy fallen needles to reduce inoculum level. A second application 3-4 weeks later may be needed in wet seasons. Labeled fungicides are Bordeaux mixture, chlorothalonil, Kocide 2000 or mancozeb.
Symptoms are evident on lower branches.
Ponderosa and Austrian pines are highly susceptible. Scots pine is highly resistant. Early symptoms, in September, are tan or yellow bands,often with a red border. Ends of needles become brown with base of needle remaining green. Infected needles may drop prematurely.