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Susceptibility of Native Conifers to Laminated Root Rot East of the Cascade Range in Oregon and Washington

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Of six native conifer species in eastern and central Oregon and Washington, Tsuga mertensiana exhibited the most infection and mortality caused by Phellinus weirii, while Pinus contorta was least affected. Tree mortality was the most common indicator of infection in susceptible species. Internal decay (butt rot) was more common in disease-resistant species. Healthy trees in infected plots were exposed to large quantities of fungus inoculum as indicated by inoculum indexes. Forest Sci. 25:261-265.
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Keywords: Phellinus weirii; Poria weirii; infection indicators; inoculum index; mortality

Document Type: Journal Article

Affiliations: Forest Insect and Disease Management, USDA Forest Service, Portland, Oregon

Publication date: 1979-06-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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