Download or read book Optimal Management of the Spruce fir Forest Against the Spruce Budworm written by Gary B. Simon and published by . This book was released on 1978 with total page 110 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 The Spruce Budworm Handbook written by Bruce A. Montgomery and published by . This book was released on 1982 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce fir Management and Spruce Budworm written by Society of American Foresters. Region VI. Technical Conference and published by . This book was released on 1985 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Spruce Budworm and You written by Christine B. Anderson and published by . This book was released on 1983 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ten year Impact of Spruce Budworm on Spruce fir Forests of Maine written by Dale S. Solomon and published by . This book was released on 1992 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uneven aged management of old growth spruce fir forests written by Robert R. Alexander and published by . This book was released on 1977 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Fir Management and Spruce Budworm written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on 1985 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Trees and Stands Susceptible to Western Spruce Budworm written by Martha H. Brookes and published by . This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Assessment of Damage Caused by the Spruce Budworm on Spruce and Balsam Fir Trees in New Brunswick written by New Brunswick. Dept. of Natural Resources and published by Fredericton, NB. This book was released on 1981 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Evaluation of Three Survey Methods for Determining Spruce fir Mortality Caused by Eastern Spruce Budworm written by and published by . This book was released on 1985 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Guide to Economic Evaluation of Spruce Budworm Management Opportunities in the East written by Robert Jay Marty and published by . This book was released on 1984 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spruce Budworms Handbook written by and published by . This book was released on 1986 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impact of the Spruce Budworm on Spruce fir Stands in the Bessemer Watersmeet Ontonagon and Bergland Districts of the Ottawa National Forest 1978 1981 written by Ann M. Lynch and published by . This book was released on 1982 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
