Download or read book Relationships of Birds and Spruce Budworms written by Hewlette S. Crawford and published by . This book was released on 1982 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library of Congress Subject Headings written by Library of Congress. Cataloging Policy and Support Office and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library of Congress Subject Headings written by Library of Congress and published by . This book was released on 2013 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library of Congress Subject Headings A E written by Library of Congress. Subject Cataloging Division and published by . This book was released on 1989 with total page 1468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A E written by Library of Congress. Office for Subject Cataloging Policy and published by . This book was released on 1990 with total page 1548 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Semiochemicals of Forest and Shade Tree Insects in North America and Management Applications written by and published by . This book was released on 1997 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control of Arthropod Forest Pests of the Western United States written by T. S. Bellows and published by . This book was released on 1998 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pesticides Documentation Bulletin written by and published by . This book was released on 1966 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Forest Ecosystem of Southeast Alaska written by John S. Hard and published by . This book was released on 1974 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Southeast Alaska's remaining virgin forests have few insect pests. The black-headed budworm and the hemlock sawfly, both western hemlock defoliators, are the most important species. They kill some trees, kill tops in others, and cause growth loss, but stands survive their attacks. Extensive conversion of virgin stands to second growth may result in an increase in pest problems as it has in similar areas such as coastal British Columbia. ‍?‍?Widespread use of insecticides to control major outbreaks is not practical because of risk of contaminating salmon-spawning and trout-rearing streams; but insecticide use may be justified in local, high value areas. Weather, diseases, and parasites control outbreaks naturally. Damage-prone stands should be identified and harvested before insect attack or salvage-logged following outbreaks. Ideally, second-growth stands should be managed for resistance to insect pests.

Download or read book Entomological Pamphlets written by and published by . This book was released on 1899 with total page 1044 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Lepidoptera of the Kootenai District of British Columbia written by Harrison Gray Dyar and published by . This book was released on 1904 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the United States National Museum written by United States National Museum and published by . This book was released on 1904 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USDA Forest Service General Technical Report PNW written by and published by . This book was released on 1977 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Foresters Almanac 1977 written by and published by . This book was released on 1977 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Forest Ecosystem of Southeast Alaska written by and published by . This book was released on 1974 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thesaurus of Agricultural Organisms written by Derwent Publications and published by CRC Press. This book was released on 1990-09-20 with total page 1578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Insect Disease Leaflet written by and published by . This book was released on 1955 with total page 1824 pages. Available in PDF, EPUB and Kindle. Book excerpt: