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ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (277 download)
Download or read book Fir Engraver Beetle (Scolytus Ventralis). written by and published by . This book was released on 2007 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George R. Struble
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ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (31 download)
Download or read book The Fir Engraver Beetle written by George R. Struble and published by . This book was released on 1937 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Patrick Shults
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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (124 download)
Download or read book Fir Engraver Damage in Western Washington written by Patrick Shults and published by . This book was released on 2021 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fir engraver beetle (Scolytus ventralis) can cause significant damage and mortality to conifers in the Abies genus in western Washington. This small insect bores below the bark of trees and feeds on the sugar-rich phloem. In the process, they also cause severe damage to the cambium, the tissue responsible for annual diameter growth. If enough beetles feed on the tree, they will eventually girdle its circumference, cutting off nutrient flow and causing the tree to die. While this beetle is capable of killing trees, in western Washington it behaves as a secondary agent. This means it typically can only establish itself in trees dealing with a preexisting stressor, such as drought or a root disease. When trees are under significant stress, they are less able to defend themselves. Because of this, severe drought conditions in western Washington often correlate with a spike in fir engraver beetle populations. Since climate models predict hotter, drier summers in the coastal northwest, fir engraver damage and mortality may become more commonplace in the years to come.
Author : George T. Ferrell
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ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (319 download)
Download or read book Stand and Tree Characteristics Influencing Density of Fir Engraver Beetle Attack Scars in White Fir written by George T. Ferrell and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George T. Ferrell
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ISBN 13 :
Total Pages : 582 pages
Book Rating : 4.3/5 (243 download)
Download or read book Stand and Tree Characteristics Influencing Density of Fir Engraver Beetle Attack Scars in White Fir written by George T. Ferrell and published by . This book was released on 1972 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George T. Ferrell
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ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (319 download)
Download or read book Using Indicator Plants to Assess Susceptibility of California Red Fir and White Fir to the Fir Engraver Beetle written by George T. Ferrell and published by . This book was released on 1986 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a Vegetation Drought Index (VDI) for estimating the susceptibility of California red and white firs to the fir engraver beetle (Scolytus ventralis) was evaluated in northern California forests where these true firs (Abies species) occur in mixed conifer and true fir stands. Midway through the summer drought, true fir moisture stress-a known predisposing factor-was highest on sites with highest VDI values (most xeric). In mixed conifer stands, the susceptibility of white firs-as indicated by the mean percentage of their basal area killed annually-was highest on sites with highest VDI values. But in true fir stands, the susceptibility of mixed red and white firs was highest on sites with the lowest VDI values. Regression models with VDI, stand basal area, and percentage of true fir as regressors lacked the required predictive range and precision, suggesting that VDI will likely have to be used in combination with predictors other than, or in addition to, those analyzed.
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ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (3 download)
Download or read book Circular written by and published by . This book was released on 1937 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Donald Richard Owen
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ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.3/5 (121 download)
Download or read book The Fir Engraver Beetle written by Donald Richard Owen and published by . This book was released on 2003 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (98 download)
Download or read book Fir Engraver Beetle written by and published by . This book was released on 2017 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 978 pages
Book Rating : 4.3/5 (91 download)
Download or read book Circular written by and published by . This book was released on 1936 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 460 pages
Book Rating : 4.3/5 (121 download)
Download or read book Forest Insect and Disease Conditions in the United States written by and published by . This book was released on 1972 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Library of Congress
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ISBN 13 :
Total Pages : 1704 pages
Book Rating : 4.3/5 (243 download)
Download or read book Library of Congress Subject Headings written by Library of Congress and published by . This book was released on 1991 with total page 1704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Library of Congress. Cataloging Policy and Support Office
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ISBN 13 :
Total Pages : 1924 pages
Book Rating : 4.3/5 (91 download)
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 2009 with total page 1924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Library of Congress. Office for Subject Cataloging Policy
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ISBN 13 :
Total Pages : 1660 pages
Book Rating : 4.3/5 (91 download)
Download or read book Library of Congress Subject Headings written by Library of Congress. Office for Subject Cataloging Policy and published by . This book was released on 1990 with total page 1660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 548 pages
Book Rating : 4.3/5 (555 download)
Download or read book Integrated Pest Management, Provolt and Charles A. Sprague Seed Orchards written by and published by . This book was released on 2005 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Library of Congress. Subject Cataloging Division
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ISBN 13 :
Total Pages : 1452 pages
Book Rating : 4.:/5 (31 download)
Download or read book Library of Congress Subject Headings: F-O written by Library of Congress. Subject Cataloging Division and published by . This book was released on 1988 with total page 1452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Library of Congress. Subject Cataloging Division
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ISBN 13 :
Total Pages : 1546 pages
Book Rating : 4.3/5 (91 download)
Download or read book Library of Congress Subject Headings: P-Z written by Library of Congress. Subject Cataloging Division and published by . This book was released on 1989 with total page 1546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
