Author: J. M. Schmid
Publisher:
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.
Spruce Beetle in the Rockies
Author: J. M. Schmid
Publisher:
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.
Publisher:
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.
Spruce Beetle in the Rockies
Spruce Beetle in the Rockies
Spruce Beetle in the Rocky Mountains
Author: Donn B. Cahill
Publisher:
ISBN:
Category : Engelmann spruce
Languages : en
Pages : 10
Book Description
Publisher:
ISBN:
Category : Engelmann spruce
Languages : en
Pages : 10
Book Description
The Spruce Beetle
Author: Edward H. Holsten
Publisher:
ISBN:
Category : Spruce bark beetles
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category : Spruce bark beetles
Languages : en
Pages : 12
Book Description
The Spruce Beetle
Author: Edward H. Holsten
Publisher:
ISBN:
Category : Spruce bark beetles
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category : Spruce bark beetles
Languages : en
Pages : 12
Book Description
The Engelmann Spruce Beetle Infestation in the Northern Rocky Mountain Region, 1956
Dispersal Studies with Radioactively Tagged Spruce Beetles
Estimating Engelmann Spruce Beetle Infestations in the Central Rocky Mountains (Classic Reprint)
Author: Fred Barrows Knight
Publisher: Forgotten Books
ISBN: 9780365077862
Category : Business & Economics
Languages : en
Pages : 20
Book Description
Excerpt from Estimating Engelmann Spruce Beetle Infestations in the Central Rocky Mountains Newly infested trees are difficult to recognize even at short distances, because pitch tubes at the points of attack generally are very small or absent. Each tree must be inspected carefully around the base for red dust from borings. Engelmann spruce is the primary host of the beetle although lodgepole pine and blue spruce also are attacked uhen mixed with Engelmann spruce. Although many lodgepole pines die, the insect broods usually do not develop to maturity. 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.
Publisher: Forgotten Books
ISBN: 9780365077862
Category : Business & Economics
Languages : en
Pages : 20
Book Description
Excerpt from Estimating Engelmann Spruce Beetle Infestations in the Central Rocky Mountains Newly infested trees are difficult to recognize even at short distances, because pitch tubes at the points of attack generally are very small or absent. Each tree must be inspected carefully around the base for red dust from borings. Engelmann spruce is the primary host of the beetle although lodgepole pine and blue spruce also are attacked uhen mixed with Engelmann spruce. Although many lodgepole pines die, the insect broods usually do not develop to maturity. 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.