Effect of Dwarf Mistletoe on Growth and Morality of Lodgepole Pine in Alberta PDF Download
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Author: Canadian Forestry Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 49
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Book Description
Author: Canadian Forestry Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 49
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Book Description
Author: J. A. Baranyay
Publisher: Queen's Printer
ISBN:
Category : Conifers
Languages : en
Pages : 30
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Book Description
Author: J. A. Baranyay
Publisher:
ISBN:
Category :
Languages : en
Pages : 19
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Book Description
Author: Frank G. Hawksworth
Publisher:
ISBN:
Category : Arceuthobium
Languages : en
Pages : 44
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Book Description
Author: James Peter Brandt
Publisher: Special Report
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 44
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Book Description
The distribution of lodgepole pine and jack pine stands severely damaged by lodgepole pine dwarf mistletoe, Arceuthobium americanum Nutt. Ex Engelm., is described for Alberta, Saskatchewan, and Manitoba. The distribution of affected stands is based on aerial and ground surveys of jack (Pinus banksiana Lamb.) and lodgepole pone (P. contorta Dougl, ex Loud. var latifolia Engelm.) forests conducted between 1984 and 1996. Depending on method of determination, between 455 000 and 585 000 ha of jack pine forests and 80 000 - 85 000 ha of lodgepole pine forests were severely diseased by dwardf mistletoe. These areas account for about 5% of the total area of pine in the study area. Annual losses due to reductions in growth and tree mortality were estimated at 2 347 000 m3. Most diseased jack pine stands occurred in the Boreal Plains ecozone, while diseased lodgepole pine stands occurred approximately equally in both the Boreal Plains and the Montane Cordillera ecozones. The report includes maps and a CD-Rom containing an Arc/Info export-format file of the coverage of pine areas severely damaged by dwarf mistletoe in west-central Canada.
Author: J. A. Baranyay
Publisher: Queen's Printer
ISBN:
Category : Conifers
Languages : en
Pages : 32
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Book Description
Author: Frank G. Hawksworth
Publisher:
ISBN:
Category : Dwarf mistletoes
Languages : en
Pages : 12
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Book Description
Author: Alberta. Alberta Environmental Protection
Publisher: Alberta Environmental Protection
ISBN: 9780778505945
Category : Dwarf mistletoes
Languages : en
Pages : 18
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Book Description
Author: G. A. Van Sickle
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
Silvicultural treatments as a method of preventing or reducing the intensification of dwarf mistletoe were evaluated. From 1967 to 1977, 23 plots in young lodgepole pine stands were sanitized by cutting or pruning the infected trees, with retreatment and assessment at 3-year intervals, and subsequent responses by the trees and the disease were recorded. The average percentage of trees infected gradually increased from 45 to 68% (+23%) on the infected, untreated plots, while decreasing from 42 to 37% ( -5%) with a thinning and pruning treatment and from 52 to 18% ( -34%) when complete eradication was attempted. Comparable changes in average stand infection ratings were +0.62, -0.08 and -0.64, respectively. Despite the three treatments each plot received, mistletoe was not eradicated from any stand. Post-thinning tree mortality, suppression of growth response, and the frequency and intensity of mistletoe increased with age of the treated stand.
Author: G. A. Van Sickle
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
Silvicultural treatments as a method of preventing or reducing the intensification of dwarf mistletoe were evaluated. From 1967 to 1977, 23 plots in young lodgepole pine stands were sanitized by cutting or pruning the infected trees, with retreatment and assessment at 3-year intervals, and subsequent responses by the trees and the disease were recorded. The average percentage of trees infected gradually increased from 45 to 68% (+23%) on the infected, untreated plots, while decreasing from 42 to 37% (-5%) with a thinning and pruning treatment and from 52 to 18% (-34%) when complete eradication was attempted. Comparable changes in average stand infection ratings were +0.62, -0.08 and -0.64, respectively. Despite the three treatments each plot received, mistletoe was not eradicated from any stand. Post-thinning tree mortality, suppression of growth response, and the frequency and intensity of mistletoe increased with age of the treated stand.
