Residual Activity of Carbaryl Protected Lodgepole Pine Against Mountain Pine Beetle, Dillon, Colorado, 1982 and 1983

Residual Activity of Carbaryl Protected Lodgepole Pine Against Mountain Pine Beetle, Dillon, Colorado, 1982 and 1983 PDF Author: Marion Page
Publisher:
ISBN:
Category : Lodgepole pine
Languages : en
Pages : 10

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Book Description
The mountain pine beetle (Dendroctonus ponderosae Hopkins) is the most destructive insect that attacks lodgepole pine (Pinus contorta Dougl.), a species valued for multiple uses throughtout North America. The effective residual life of carbaryl, applied as a 2 percent suspension of Sevimol to the bark of lodgepole pine to prevent attack by mountain pine beetle, was evaluated near Dillon, Colorado. Trees (9,568) treated in 1982 under operational conditions were used to assess the efficacy of the treatment for one and two beetle flight periods after insecticide application. Estimated mortality of untreated trees was 0.91 percent compared with 0.074 percent for trees treated 16 months earlier with carbaryl. Residues of carbaryl were estimated at 359 ppm 16 months after application. When exposed to intense beetle pressure, bolts from trees treated 13 months earlier suffered fewer attacks and had shorter mean egg gallery length than did bolts from untreated trees; bolts from trees sprayed 3 months earlier suffered no attacks. Apparently a 2 percent suspension of carbaryl applied to the bole of lodgepole pine was effective in protecting lodgepole pine from mountain pine beetle for the flight period 3 months after application and even provided protection for a second flight period 16 months after treatment. I The results suggest that protection cost and I insecticide use could be reduced by 50 percent during a 4-year outbreak.

Residual Activity of Carbaryl Protected Lodgepole Pine Against Mountain Pine Beetle, Dillon, Colorado, 1982 and 1983

Residual Activity of Carbaryl Protected Lodgepole Pine Against Mountain Pine Beetle, Dillon, Colorado, 1982 and 1983 PDF Author: Marion Page
Publisher:
ISBN:
Category : Lodgepole pine
Languages : en
Pages : 10

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Book Description
The mountain pine beetle (Dendroctonus ponderosae Hopkins) is the most destructive insect that attacks lodgepole pine (Pinus contorta Dougl.), a species valued for multiple uses throughtout North America. The effective residual life of carbaryl, applied as a 2 percent suspension of Sevimol to the bark of lodgepole pine to prevent attack by mountain pine beetle, was evaluated near Dillon, Colorado. Trees (9,568) treated in 1982 under operational conditions were used to assess the efficacy of the treatment for one and two beetle flight periods after insecticide application. Estimated mortality of untreated trees was 0.91 percent compared with 0.074 percent for trees treated 16 months earlier with carbaryl. Residues of carbaryl were estimated at 359 ppm 16 months after application. When exposed to intense beetle pressure, bolts from trees treated 13 months earlier suffered fewer attacks and had shorter mean egg gallery length than did bolts from untreated trees; bolts from trees sprayed 3 months earlier suffered no attacks. Apparently a 2 percent suspension of carbaryl applied to the bole of lodgepole pine was effective in protecting lodgepole pine from mountain pine beetle for the flight period 3 months after application and even provided protection for a second flight period 16 months after treatment. I The results suggest that protection cost and I insecticide use could be reduced by 50 percent during a 4-year outbreak.

Research Note PSW.

Research Note PSW. PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 172

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General Technical Report INT.

General Technical Report INT. PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 492

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Assessment and Response to Bark Beetle Outbreaks in the Rocky Mountain Area

Assessment and Response to Bark Beetle Outbreaks in the Rocky Mountain Area PDF Author: United States. Forest Health Protection
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 60

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General Technical Report RMRS

General Technical Report RMRS PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 60

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Effectiveness of Esfenvalerate, Cyfluthrin, and Carbaryl in Protecting Individual Lodgepole Pines and Ponderosa Pines from Attack by Dendroctonus Spp

Effectiveness of Esfenvalerate, Cyfluthrin, and Carbaryl in Protecting Individual Lodgepole Pines and Ponderosa Pines from Attack by Dendroctonus Spp PDF Author:
Publisher:
ISBN:
Category : Dendroctonus
Languages : en
Pages : 20

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General Technical Report PSW.

General Technical Report PSW. PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 704

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General Technical Report WO.

General Technical Report WO. PDF Author:
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 432

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Proceedings of the Symposium on Management of Western Bark Beetles with Pheromones--Research and Development

Proceedings of the Symposium on Management of Western Bark Beetles with Pheromones--Research and Development PDF Author:
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 60

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Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 584

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