Author : B. H. Moody
Publisher :
Page : 38 pages
File Size : 11,1 MB
Release : 1986
Category : Forest insects
ISBN :
Author :
Publisher :
Page : 134 pages
File Size : 40,84 MB
Release : 1990
Category : Forest insects
ISBN :
Author :
Publisher :
Page : 596 pages
File Size : 33,97 MB
Release : 1989
Category : Forests and forestry
ISBN :
Author : David N. Cole
Publisher :
Page : 532 pages
File Size : 12,9 MB
Release : 1989
Category : Blister rust
ISBN :
Author : James Peter Brandt
Publisher : Canadian Forest Service, Northern Forestry Centre
Page : 44 pages
File Size : 42,48 MB
Release : 1995
Category : Technology & Engineering
ISBN :
Describes the impacts caused by major forest insects (defoliators and bark beetles) and diseases (excluding those caused by fungi) to the timber resources of the Prairie Provinces and Northwest Territories in terms of wood volume losses due to tree mortality and growth reduction for the 1988-92 period. Most impacts were calculated using an automated system based on defoliation or infestation maps produced by geographic information systems and related inventory data. Results are presented for losses due to the following: spruce budworm (Choristoneura fumiferana), jack pine budworm (C. pinus pinus), forest tent caterpillar (Malacosoma disstria), large aspen tortrix (C. conflictana), bruce spanworm (Operophtera bruceata), mountain pine beetle (Dendroctonus ponderosae), spruce beetle (D. rufipennis), Douglas-fir beetle (D. pseudotsugae), Lodgepole pine dwarf mistletoe (Arceuthobium americanum), and wood decay.
Author :
Publisher :
Page : 128 pages
File Size : 21,78 MB
Release : 1989
Category : Lodgepole pine
ISBN :
Author : F. J. Emond
Publisher :
Page : 40 pages
File Size : 29,29 MB
Release : 1990
Category : Forest insects
ISBN :
Forest pest conditions in Alberta, Saskatchewan, Manitoba, and the Northwest Territories during 1989 are summarized and some predictions of infestation status are given for 1990. Eleven major pests are discussed, and additional noteworthy insects, diseases, and tree damage agents are reported in a table. Results of surveys for acid rain symptoms and pests and damage incidence in nurseries and plantations are also reported.
Author : John Alexander Armstrong
Publisher : Canadian Government Publishing
Page : 756 pages
File Size : 18,26 MB
Release : 1995
Category : Science
ISBN :
The papers presented in this book cover the range of forest insect pest management activities in Canada. The first section contains papers on the current status of insect pests by region, including data on insect populations and extent of defoliation caused by the insect. The next section covers pest management technology, including the use of insecticides, insect viruses, fungal pathogens, growth regulators, antifeedants, pheromones, natural predators, and aerial spraying. The third section contains papers on the application of technology and equipment for forest pest control, and includes papers on the impacts of insecticides on the forest environment. The fourth section describes operational control programs by province. The final paper presents future strategies for the management of forest pests. An author index is included.
Author :
Publisher :
Page : 516 pages
File Size : 41,56 MB
Release : 1998
Category : Forests and forestry
ISBN :
Author : H. F. Cerezke
Publisher :
Page : 40 pages
File Size : 25,49 MB
Release : 1989
Category : Forest insects
ISBN :
Forest pest conditions in Alberta, Saskatchewan, Manitoba, and the Northwest Territories during 1987 are summarized, and some predictions of infestation status are given for 1988. Eight major pests are discussed, and additional noteworthy insects, diseases, and other tree damage agents are reported in a table. Results of surveys for acid rain symptoms, pests and damage incidence in nurseries and plantations, and climatic injury to trees are also reported.
