Hosts and Geographic Distribution of Scirrhia pini--The Cause of Red Band Needle Blight in California
Scirrhia pini was first identified as the cause of a needle disease of pine in California in January 1966. Over 300 plantings, natural stands, and nurseries were subsequently examined to determine the geographic and host range of the fungus in the state. Eight infection centers were found--all in plantations or ornamental plantings in four areas along the north coast. The fungus was found on Pinus radiata, P. attenuata, P. attenuata x radiata, and P. contorts. P. radiata appeared to be the most susceptible, severe damage having occurred in plantations of this species in the high rainfall area of coastal northern California. There is no evidence to indicate that S. pini is native to California or that it has been introduced on planting stock. A fungus closely resembling S. pini was found on native P. monticola in northern California and has tentatively been identified as Lecanosticta sp.
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Document Type: Journal Article
Affiliations: Plant Pathologist, U.S. Forest Service, San Francisco, Calif.
Publication date: 1968-12-01
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