Download or read book Spruce Budworm Suppression 1972 written by and published by . This book was released on 1972 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spruce Budworm Cooperative Management 1981 1985 written by and published by . This book was released on 1981 with total page 426 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 USDA Forest Service Research Paper RM written by Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) and published by . This book was released on 1968 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Literature Review of the Spruce Western and 2 year cycle Budworms written by Melvin E. McKnight and published by . This book was released on 1968 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers 370 literature citations on the spruce (C. fumiferana (Clemens)), western (C. occidentalis Freeman), and 2-year-cycle (C. biennis Freeman) budworms through November 1967. Citations are also organized in a suject index.

Download or read book U S Forest Service Research Paper RM written by Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) and published by . This book was released on 1967 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on 1952 with total page 398 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 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 Spruce Budworms Handbook written by and published by . This book was released on 1985 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set includes revised editions of some issues.

Download or read book Balsam Fir written by Egolfs V. Bakuzis and published by U of Minnesota Press. This book was released on 1965 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book At the Northeastern Station written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on 1955 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hazard rating Systems in Forest Insect Pest Management written by and published by . This book was released on 1981 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book General Technical Report NE written by and published by . This book was released on 1980 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tree Defects written by Alex L. Shigo and published by . This book was released on 1983 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spruce Budworms Bibliography written by Maine Agricultural Experiment Station and published by . This book was released on 1982 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1983 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: