Author: C. L. MasseyPublisher:
ISBN:
Category : Engelmann spruce beetle
Languages : en
Pages : 40
Book Description
Biology and Control of the Engelmann Spruce Beetle in Colorado
Author: C. L. MasseyPublisher:
ISBN:
Category : Engelmann spruce beetle
Languages : en
Pages : 40
Book Description
Biology and Control of the Engelmann Spruce Beetle in Colorado (Classic Reprint)
Author: C. L. MasseyPublisher: Forgotten Books
ISBN: 9781391339245
Category :
Languages : en
Pages : 44
Book Description
Excerpt from Biology and Control of the Engelmann Spruce Beetle in Colorado From 1939 to 1951 the beetles destroyed billion board-feet of timber in western Colorado billion board-feet of Engelmann spruce and 500 million board-feet of lodgepole pine. This infestation was directly correlated with large numbers of trees that were blown down by a severe Windstorm on June 20, 1939. Some of the roots were still covered and functioning; others were completely severed. In many of the trees the bole was left standing with the crown blown off by the wind or broken off by falling trees. Apparently the beetles were present in endemic numbers and attacked the wind-damaged trees. By the summer of 1941 tremendous beetle populations had developed. The adults emerging from the wind-fallen and wind broken trees attacked standing green trees in the surrounding area. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Biology and Control of the Engelmann Spruce Beetle in Colorado
Author: C. L. MasseyResearch Program in the Biology, Ecology, and Natural Control of the Engelmann Spruce Beetle at Fort Collins, Colorado
Author: Ecology, Silviculture, and Management of the Engelmann Spruce--subalpine Fir Type in the Central and Southern Rocky Mountains
Author: Robert R. AlexanderPublisher:
ISBN:
Category : Engelmann spruce
Languages : en
Pages : 154
Book Description
Engelmann Spruce Bark Beetle Control Project, Colorado, 1950-52
Author: United States. Forest ServicePublisher:
ISBN:
Category : Spruce bark beetles
Languages : en
Pages : 20
Book Description
Engelmann Spruce Bark Beetle Control Project, Colorado, 1950
Author: Spruce Beetle in the Rockies
Author: J. M. SchmidPublisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 44
Book Description
This report summarizes the literature on the spruce beetle in the western United States, primarily in the Rocky Mountains. Information is presented on life history and behavior, host relationships, mortality agents and impacts of infestations. A section on suppression details the current status of chemicals, pheromones, trap trees and silvicultural treatments. The initial steps in managing spruce beetle populations are stated in the final section on beetle management policy.
Engelmann Spruce Bark Beetle Control Project, Colorado, 1951
Author: United States. Forest ServicePublisher:
ISBN:
Category : White pine weevil
Languages : en
Pages :
Book Description
Author: