Notes: Association of Black-Stain Root Disease with Precommercial Thinning of Douglas-fir

Authors: Harrington, T. C.; Reinhart, C.; Thornburgh, D. A.; Cobb, F. W.

Source: Forest Science, Volume 29, Number 1, 1 March 1983 , pp. 12-14(3)

Publisher: Society of American Foresters

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Black-stain root disease, caused by Verticicladiella wageneri, was found in 18 of 23 plots of Douglas-fir 12 years after a precommercial thinning. No disease was found in six unthinned control plots. Of the Douglas-fir trees left after thinning, 35, 28, 21, and 19 percent were infected in the plots thinned to an average of 1175, 832, 610, and 355 stems per ha, respectively. Thinning of Douglas-fir stands may create disturbances attractive to vectors of V. wageneri Forest Sci. 29:12-14

Keywords: Pseudotsuga menziesii; Verticicladiella wageneri

Document Type: Miscellaneous

Affiliations: Associate Professor, Department of Plant Pathology, University of California, Berkeley, California 94720

Publication date: March 1, 1983

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  • 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.
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