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Title: Phytophthora lateralis on Port-Orford-cedar.
Author: Hunt, John.;
Source: PNW Old Series Research Notes No. 172, p. 1-6
Publication Series: Scientific Journal (JRNL)
Description: Results from annual surveys of the destructive Phytophthora root disease of Port-Orford-cedar (Chamaecyparis lawsoniana (A. Murr.) Parl.) show that the disease is gradually spreading and intensifying within the natural range of Port-Orford-cedar. The disease became established on native trees in the early 1950's in the vicinity of Coos Bay, Oreg., and during its initial buildup invaded most of the low-lying area between Tenmile Lake and Port Orford. Since 1955 its progress, although less spectacular, has been characterized by gradual, steady encroachment into new areas.
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Hunt, John. 1959. Phytophthora lateralis on Port-Orford-cedar. PNW Old Series Research Notes No. 172, p. 1-6
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