Download or read book Coming Spruce Budworm Outbreak written by Maine Spruce Budworm Task Force and published by . This book was released on 2014 with total page 90 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 Mortality of Spruce and Fir in Maine in 1976 78 Due to the Spruce Budworm Outbreak written by Donald W. Seegrist and published by . This book was released on 1982 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coming Spruce Budworm Outbreak written by Maine Spruce Budworm Task Force and published by . This book was released on 2016 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Historical Patterns of Spruce Budworm Defoliation and Bark Beetle Outbreaks in North American Conifer Forests written by David W. Williams and published by . This book was released on 2003 with total page 40 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 The Spruce Budworm Outbreak in Maine in the 1970 s written by and published by . This book was released on 1988 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book How Damage to Balsam Fir Develops After a Spruce Budworm Epidemic written by Thomas Frederick McLintock and published by . This book was released on 1955 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1948 to 1952 a light to medium spruce budworm infestation occurred in the spruce-fir forests of northern Maine. During this period both the degree of infestation and the acreage affected fluctuated considerably, but the population remained below the damage level. In 1953 there was a general reduction in budworm population in all portions of northern Maine except a relatively small area of same 20,000 acres near Madawaska Lake. Here a marked increase in infestation occurred. Because of possible damage to trees on this area and the hazard of spread to adjacent areas, this tract was sprayed in the spring of 1954. Meanwhile a very severe outbreak over an area of several thousand square miles in the nearby Province of New Brunswick has become a serious threat to the spruce-fir forests of Maine.

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 Spruce Budworm in Maine written by Henry Trial and published by . This book was released on 1989 with total page 64 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 Patch Dynamics of Spruce fir Forests During a Spruce Budworm Outbreak in Maine written by Akira Osawa and published by . This book was released on 1986 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Historical Patterns of Western Spruce Budworm and Douglas fir Tussock Moth Outbreaks in the Northern Blue Mountains Oregon Since A D 1700 written by and published by . This book was released on 1995 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Protection of Red Spruce from Spruce Budworm Defoliation written by Russell E. Keenan and published by . This book was released on 1985 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Spruce Budworm Cacoecia Fumiferana Clem written by James Malcolm Swaine and published by . This book was released on 1924 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Outbreaks of the Western Spruce Budworm in the American Northern Rocky Mountain Area from 1922 Through 1971 written by Philip Cornwell Johnson and published by . This book was released on 1975 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Vulnerability to a Western Spruce Budworm Outbreak written by Everett Steven Isaac and published by . This book was released on 1999 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: