Author: Fred Barrows KnightPublisher:
ISBN:
Category : Engelmann spruce
Languages : en
Pages : 12
Book Description
Estimating Engelmann Spruce Beetle Infestations in the Central Rocky Mountains
Author: Fred Barrows KnightPublisher:
ISBN:
Category : Engelmann spruce
Languages : en
Pages : 12
Book Description
Estimating Engelmann Spruce Beetle Infestations in the Central Rocky Mountains
Author: Fred Barrows KnightPublisher:
ISBN:
Category : Engelmann spruce
Languages : en
Pages : 12
Book Description
Estimating Engelmann Spruce Beetle Infestations in the Central Rocky Mountains (Classic Reprint)
Author: Fred Barrows KnightPublisher: Forgotten Books
ISBN: 9780365077831
Category : Business & Economics
Languages : en
Pages : 22
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.
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.
A Bibliography of Engelmann Spruce
Author: Earl Martin ChristensenPublisher:
ISBN:
Category : Engelmann spruce
Languages : en
Pages : 44
Book Description
Publications of the Rocky Mountain Forest and Range Experiment Station, 1953-73
Author: Glen E. BrinkPublisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 104
Book Description
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
Areal Snow Cover Observations in the Central Rockies, Colorado
Author: Arden D. HaeffnerPublisher:
ISBN:
Category : Snow surveys
Languages : en
Pages : 328
Book Description
General Technical Report RM.
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 646
Book Description
Silviculture of Subalpine Forests in the Central and Southern Rocky Mountains
Author: Robert R. AlexanderPublisher:
ISBN:
Category : Abies lasiocarpa
Languages : en
Pages : 100
Book Description