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Technical Note: White Pine Blister Rust, Root Disease, and Bears

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Prior to harvest, nine root disease sites lacked any Ribes spp., but after harvest six supported Ribes spp. Surveys indicated that Ribes spp. and other berry plants were in greater abundance in root disease areas than in adjacently harvested areas. Seed deposition by bears and periodic flourishing in root disease areas are likely contributors to forest seed banks. On one site the blister rust incidence in white pines was 98% in the root disease area and 27% in the adjacent nonroot diseased area. The presence of root disease should be used to rank an area for high hazard potential to blister rust. West. J. Appl. For. 15(1)38-39.

Document Type: Technical Note

Affiliations: Canadian Forest Service, Pacific Forestry Centre, 506 W. Burnside Rd., Victoria, British Columbia V8Z 1M5, (250) 363-0640;, Fax: (250) 363-0775

Publication date: 2000-01-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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