Forest Insect and Disease Conditions in Canada PDF Download
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Author:
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 476
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Book Description
Author:
Publisher:
ISBN:
Category : Forest insects
Languages : en
Pages : 476
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Book Description
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 612
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Book Description
Author: John Alexander Armstrong
Publisher: Canadian Government Publishing
ISBN:
Category : Science
Languages : en
Pages : 756
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Book Description
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:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 164
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Book Description
Covers all publications issued by the regions, institutes and headquarters of Forestry Canada.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 852
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Book Description
Author: Association québécoise des groupes d'ornithologues
Publisher: L'Association québecoise des groupes d'ornithologes
ISBN:
Category : Nature
Languages : en
Pages : 1328
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Book Description
Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 768
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Book Description
Author:
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ISBN:
Category : Acid deposition
Languages : en
Pages : 680
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Book Description
Author:
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ISBN:
Category : Canada
Languages : en
Pages : 1632
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Book Description
Author: Reinhard F. Hüttl
Publisher: Springer Science & Business Media
ISBN: 9401154023
Category : Science
Languages : en
Pages : 367
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Book Description
R. F. HUTTL AND W. SCHAAF Brandenburg Technical University Cottbus, Chair of Soil Protection and Recultivation, P.O. Box 10 13 44, 03013 Cottbus, Germany The health status of forest trees and stands is determined by numerous site factors such as chemical, physical, and biological soil factors, water supply, climate, weather conditions, management history as well as atmospheric deposition impacts. In this context, the nutrient supply is an important evaluation parameter. Forest trees well supplied with nutrients are more resistant to stresses that affect the forest ecosystem than other trees. This is true for both biotic and abiotic influences. Therefore the investigation of the so-called 'new type forest damage' was aimed at the exact determination of the health status of damaged trees. When considering the complete forest ecosystem, health (=vitality) means the sustainable ability to withstand negative environmental influences and still remain stable and productive. From this viewpoint, an optimal nutritional status is a prerequisite for an optimal health status. The term 'new type forest damage' comprises a number of damage symptoms which have been observed in various tree species on very different sites since the mid-1970s, particularly in Europe and North America. However, they occurred much more intensively in the 1980s. Generally, this forest damage was thought to be related to negative impacts of air pollutants.
