Download or read book Protection Strategy against Spruce Budworm written by David A. MacLean and published by MDPI. This book was released on 2020-01-15 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spruce budworm (Choristoneura fumiferana (Clem.)) outbreaks are a dominant natural disturbance in the forests of Canada and northeastern USA. Widespread, severe defoliation by this native insect results in large-scale mortality and growth reductions of spruce (Picea sp.) and balsam fir (Abies balsamea (L.) Mill.) forests, and largely determines future age–class structure and productivity. The last major spruce budworm outbreak defoliated over 58 million hectares in the 1970s–1980s, and caused 32–43 million m3/year of timber volume losses from 1978 to 1987, in Canada. Management to deal with spruce budworm outbreaks has emphasized forest protection, spraying registered insecticides to prevent defoliation and keep trees alive. Other tactics can include salvage harvesting, altering harvest schedules to remove the most susceptible stands, or reducing future susceptibility by planting or thinning. Chemical insecticides are no longer used, and protection strategies use biological insecticides Bacillus thuringiensis (B.t.) or tebufenozide, a specific insect growth regulator. Over the last five years, a $30 million research project has tested another possible management tactic, termed an ‘early intervention strategy’, aimed at area-wide management of spruce budworm populations. This includes intensive monitoring to detect ‘hot spots’ of rising budworm populations before defoliation occurs, targeted insecticide treatment to prevent spread, and detailed research into target and non-target insect effects. The objective of this Special Issue is to compile the most recent research on protection strategies against spruce budworm. A series of papers will describe results and prospects for the use of an early intervention strategy in spruce budworm and other insect management.
Download or read book Protection Strategy against Spruce Budworm written by David MacLean and published by . This book was released on 2020 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spruce budworm (Choristoneura fumiferana (Clem.)) outbreaks are a dominant natural disturbance in the forests of Canada and northeastern USA. Widespread, severe defoliation by this native insect results in large-scale mortality and growth reductions of spruce (Picea sp.) and balsam fir (Abies balsamea (L.) Mill.) forests, and largely determines future age-class structure and productivity. The last major spruce budworm outbreak defoliated over 58 million hectares in the 1970s-1980s, and caused 32-43 million m3/year of timber volume losses from 1978 to 1987, in Canada. Management to deal with spruce budworm outbreaks has emphasized forest protection, spraying registered insecticides to prevent defoliation and keep trees alive. Other tactics can include salvage harvesting, altering harvest schedules to remove the most susceptible stands, or reducing future susceptibility by planting or thinning. Chemical insecticides are no longer used, and protection strategies use biological insecticides Bacillus thuringiensis (B.t.) or tebufenozide, a specific insect growth regulator. Over the last five years, a $30 million research project has tested another possible management tactic, termed an 'early intervention strategy', aimed at area-wide management of spruce budworm populations. This includes intensive monitoring to detect 'hot spots' of rising budworm populations before defoliation occurs, targeted insecticide treatment to prevent spread, and detailed research into target and non-target insect effects. The objective of this Special Issue is to compile the most recent research on protection strategies against spruce budworm. A series of papers will describe results and prospects for the use of an early intervention strategy in spruce budworm and other insect management.
Download or read book Protection Strategy Against Spruce Budworm written by and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spruce budworm (Choristoneura fumiferana (Clem.)) outbreaks are a dominant natural disturbance in the forests of Canada and northeastern USA. Widespread, severe defoliation by this native insect results in large-scale mortality and growth reductions of spruce (Picea sp.) and balsam fir (Abies balsamea (L.) Mill.) forests, and largely determines future age-class structure and productivity. The last major spruce budworm outbreak defoliated over 58 million hectares in the 1970s-1980s, and caused 32-43 million m3/year of timber volume losses from 1978 to 1987, in Canada. Management to deal with spruce budworm outbreaks has emphasized forest protection, spraying registered insecticides to prevent defoliation and keep trees alive. Other tactics can include salvage harvesting, altering harvest schedules to remove the most susceptible stands, or reducing future susceptibility by planting or thinning. Chemical insecticides are no longer used, and protection strategies use biological insecticides Bacillus thuringiensis (B.t.) or tebufenozide, a specific insect growth regulator. Over the last five years, a $30 million research project has tested another possible management tactic, termed an 'early intervention strategy', aimed at area-wide management of spruce budworm populations. This includes intensive monitoring to detect 'hot spots' of rising budworm populations before defoliation occurs, targeted insecticide treatment to prevent spread, and detailed research into target and non-target insect effects. The objective of this Special Issue is to compile the most recent research on protection strategies against spruce budworm. A series of papers will describe results and prospects for the use of an early intervention strategy in spruce budworm and other insect management.
Download or read book Integrated Forest Protection Guide written by James P. Linnane and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by Daniel M. Schmitt and published by . This book was released on 1984 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Pest Management Guide written by James P. Linnane and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Protection Against Spruce Budworm written by and published by . This book was released on 1964 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Maine Spruce Budworm Policy written by Maine. Department of Conservation and published by . This book was released on 1979 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book How to Protect Individual Trees from Western Spruce Budworm by Implants and Injections written by Richard C. Reardon and published by . This book was released on 1984 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworm Suppression Project 1979 written by and published by . This book was released on 1979 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Protection Against Spruce Budworm written by and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Western Spruce Budworm Management OR WA written by and published by . This book was released on 1989 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Draft Environmental Impact Statement for Managing Western Spruce Budworm in Oregon and Washington written by and published by . This book was released on 1988 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Northeastern Spruce Budworm Suppression Project ME VT NH written by and published by . This book was released on 1978 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by Clinton E. Carlson and published by . This book was released on 1989 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Protection the Spruce Budworm written by Forest Protection, the Spruce Budworm. Workshop (1998 : Fredericton, N.B.) and published by . This book was released on 1998 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents proceedings & summary notes from break-out groups at a workshop on spruce budworm control. Topics of presentations include the budworm cycle, modelling & forecasting, impacts of the budworm in New Brunswick, insect infestation socio-economic implications, forest protection, the Federal Pesticide Registration System, environmental implications of pesticides, budworm control options, and biotechnology.
Download or read book Kaibab National Forest N F Grand Canyon National Park N P Western Spruce Budworm written by and published by . This book was released on 1981 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
