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Management Of Laminated Root Rot Caused By Phellinus Weirii Murr Gilbertson In Douglas Fir Microform
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Author :Robert G. (Robert Gerald) Fraser Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780315593244 Total Pages :108 pages Book Rating :4.5/5 (932 download)
Book Synopsis Management of Laminated Root Rot Caused by Phellinus Weirii (Murr.) Gilbertson in Douglas-fir [microform] by : Robert G. (Robert Gerald) Fraser
Download or read book Management of Laminated Root Rot Caused by Phellinus Weirii (Murr.) Gilbertson in Douglas-fir [microform] written by Robert G. (Robert Gerald) Fraser and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1989 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminated Root Rot in a Western Washington Plantation by : Richard E. Miller
Download or read book Laminated Root Rot in a Western Washington Plantation written by Richard E. Miller and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 4-year-old Douglas-fir plantation in the western Washington Cascades was monitored for 8 years after fertilization with potassium (K), nitrogen (N), and K+N to determine fertilizer effects on rates of mortality from laminated root rot (LRR) and other causes relative to a nonfertilized control. Each element was applied at a rate of 300 lb/acre on and around 0.2-acre plots replicated seven times in a randomized complete block design. Cumulative mortality from LRR did not differ significantly among fertilizer treatments, and losses were strongly related to density of infected stumps from the previous stand (r2 = 0.74). Mortality from disease and other sources accelerated during the 8 years of monitoring. Average tree growth and stand volume were greatest in treatment N and were reduced where N was combined with K. Continued monitoring is needed to identify potential longer term effects of the fertilizer treatments on susceptibility of Douglas-fir to LRR and Armillaria spp.
Book Synopsis Laminated Root Rot in Western North America by :
Download or read book Laminated Root Rot in Western North America written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Phellinus Weirii Root Rot Damage in a 60-year-old Douglas-fir (Pseudotsuga Menziesii) Stand with the Damage in the Preceding Old-growth Stand by : Borys M. Tkacz
Download or read book Comparison of Phellinus Weirii Root Rot Damage in a 60-year-old Douglas-fir (Pseudotsuga Menziesii) Stand with the Damage in the Preceding Old-growth Stand written by Borys M. Tkacz and published by . This book was released on 1979 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laminated root rot of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) caused by the fungus Phellinus weirii (Murr.) Gilbertson was studied in two successive stands in the Oregon Coast Range. Damage due to the disease in a 60-year-old second-growth stand was compared with incidence in the preceding 300-year-old stand on the same site. Information for the comparison was gathered by mapping all current stand trees (living and dead) and the remains of previous stand trees on four one hectare plots. Damage in each stand generation was assessed in terms of the reduction in stand density and basal area by P. weirii caused mortality, the extent of infection among living trees, and the plot area covered by the disease. Current stand damage estimates were based on the amounts and distribution of healthy, infected and dead trees. Live infected trees were diagnosed by the presence of either surface mycelium or internal decay as evidenced by root collar excavation and increment boring of all trees around disease centers. Previous stand damage estimates were based on the number and distribution of infected stumps, snags, and old down trees. Setal hyphae were used as positive evidence of P. weirii decay in old growth residuals. The comparisons of damage revealed that laminated root rot was more destructive in the previous stand at the time of its harvest than in the current second-growth stand. The reduction in stand density by P. weirii caused mortality was greater in the previous stand (75.5%) than in the current stand (41.7%). In the previous stand 60.9% of the trees living at harvest were infected while 35.1% of the living trees were infected in the current stand. The reduction of Expected Basal Area (of a healthy stand on the site) by P. weirii caused mortality was also greater in the previous stand (56.6%) than in the current stand (22.5%). The proportion of the Actual Basal Area infected was also higher in the previous stand (61.8 %) than in the current stand (41.1%). Phellinus weirii was present on 82.5% of the previous stand plot area compared to 51.2% of the current stand plot area. The difference is largely attributable to the larger Area of Concentrated Mortality in the previous stand (68.4% vs. 36.3%). Differences between plots in the Total Area of Infection in the current stand were best related to differences in the type of inoculum from the previous stand and area affected by these inoculum sources (Area of Potential Inoculum). Sixty-five percent of the currently diseased area lay beyond the Area of Potential Inoculum from the previous stand, indicating significant tree to tree spread in the current stand. Although damage levels were higher in the previous stand (at its harvest) than those currently found, the average annual rate of damage increase was much higher in the current stand than the previous stand. Projections of current damage rates to a comparable age predict much higher losses due to the disease in the current stand than were found in the previous stand.
Book Synopsis Laminated Root Rot of Douglas-fir in Western Oregon and Washington by : Thomas White Childs
Download or read book Laminated Root Rot of Douglas-fir in Western Oregon and Washington written by Thomas White Childs and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminated Root Rot Damage in a Young Douglas-fir Stand by : E. E. Nelson
Download or read book Laminated Root Rot Damage in a Young Douglas-fir Stand written by E. E. Nelson and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminated Root Rot in Western North America by : Walter G. Thies
Download or read book Laminated Root Rot in Western North America written by Walter G. Thies and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laminated root-rot, caused by the fungus Phellinus weirii, is a serious root disease affecting Douglas fir and other commercially important species of conifers in north-western North America. This report provides an overview of the disease as it occurs in the Pacific Northwest of the US and Canada. Information is presented on recognizing crown symptoms and signs of the disease. The disease cycle of laminated root-rot from initiation to intensification and distribution within infected stands is also described. Finally, disease management strategies during stand development and at stand regeneration are discussed. Features on the nomenclature of the fungus and on its management by silvicultural and mechanical approaches are included.
Book Synopsis Laminated Root Rot by : James S. Hadfield
Download or read book Laminated Root Rot written by James S. Hadfield and published by . This book was released on 1977 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminated Root Rot of Douglas-fir by : Thomas White Childs
Download or read book Laminated Root Rot of Douglas-fir written by Thomas White Childs and published by . This book was released on 1971 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recognizing laminated root rot in freshly-cut Douglas-fir stumps by :
Download or read book Recognizing laminated root rot in freshly-cut Douglas-fir stumps written by and published by . This book was released on 1987 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecological Impacts of Using Chloropicrin to Control Laminated Root Rot in Northwest Conifer Forests by : Michael A. Castellano
Download or read book Ecological Impacts of Using Chloropicrin to Control Laminated Root Rot in Northwest Conifer Forests written by Michael A. Castellano and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phellinus (poria) Weirii Root Rot by : Canadian Forestry Service
Download or read book Phellinus (poria) Weirii Root Rot written by Canadian Forestry Service and published by Pacific Forest Research Centre. This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis User's Guide to the Western Root Disease Model, Version 3.0 by :
Download or read book User's Guide to the Western Root Disease Model, Version 3.0 written by and published by . This book was released on 1998 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Opportunities for Addressing Laminated Root Rot Caused by Phellinus Sulphurascens in Washington's Forests by :
Download or read book Opportunities for Addressing Laminated Root Rot Caused by Phellinus Sulphurascens in Washington's Forests written by and published by . This book was released on 2013 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report from the Washington State Academy of Sciences (WSAS) is in response to a request from the Washington State Department of Natural Resources (DNR) to "identify approaches and opportunities ripe for research on understanding and managing root diseases of Douglas-fir." Similar to the process used by the National Research Council, the WSAS upon agreeing to undertake a project such as requested by the DNR assembles a committee of state, regional, national, and/or international experts, as needed; develops a statement of task to guide the study; conducts the study; and makes recommendations based on the findings. The Committee that conducted this study included federal (both U.S. and Canadian), state, university, and private company representation from Idaho, Oregon, Washington, and British Columbia."
Book Synopsis Phellinus (Poria) Weirii Root Rot in Douglas-fir-alder Stands 10-17 Years Old by : Everett M. Hansen
Download or read book Phellinus (Poria) Weirii Root Rot in Douglas-fir-alder Stands 10-17 Years Old written by Everett M. Hansen and published by . This book was released on 1975 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Kevin Wanner Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612011663 Total Pages :140 pages Book Rating :4.0/5 (116 download)
Book Synopsis Microbial and Insect Colonization of Douglas-fir Stumps and Roots, with Special Reference to Phellinus Weirii, Murr., Gilbertson and Glyphosate Application [microform] by : Kevin Wanner
Download or read book Microbial and Insect Colonization of Douglas-fir Stumps and Roots, with Special Reference to Phellinus Weirii, Murr., Gilbertson and Glyphosate Application [microform] written by Kevin Wanner and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1994 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phellinus Weirii Root Rot of Douglas Fir in the Sehome Hill Arboretum by : William Gary Cantrell
Download or read book Phellinus Weirii Root Rot of Douglas Fir in the Sehome Hill Arboretum written by William Gary Cantrell and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the cause, distribution and impact of a forest pathogen within the 71 forested hectares of the Sehome Hill Arboretum in urban Bellingham, Washington. The causal agent was determined by the identification of cultures from decaying wood in douglas fir (Pseudotsuga menziesii (Mirbel) Franco) to be the root rotting basidiomycete Phellinus weirii (Muir.) Gilb. A ground survey of aboveground symptoms was used to detect 31 infection centers covering 6.64 hectares (9.2% of the Arboretum) of symptomatic trees. Infra-red aerial photography was used to determine canopy cover for deciduous and evergreen species. A forest canopy survey was conducted to determine canopy dominance in each of 22 forested regions of the Arboretum. Basal area at breast height was used to establish dominance. Tree density and size-class distributions were used to predict future dominance in the presence of continuing Phellinus root rot infection. Seven management approaches were discussed.
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