Forest Pests: Spruce Budworm Documents

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The Significance of Non-Host and Alternative Host Tree Species on Populations of Larval and Spruce Budworm, with Emphasis on Improving Sampling Techniques

Problem Addressed: Spruce budworm
Goal(s)/Objective(s): Evaluate spruce budworm population and defoliation levels on host species of differing forest types in Maine.
Key Findings: Spruce budworm moths showed a distinct preference for white spruce foliage. Egg to instar-VI budworm survival was highest in the forest type which was a mixture of white spruce and balsam fir. Survival was lowest in the study area with a mixture of red spruce, balsam fir, and hemlock.
Views: 917
Downloads: 1
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Potential for Prebunching with Small Wheeled Tractors

Problem Addressed: Slash from precommercial thinning creating an extreme fire hazard and serving as a breeding ground for insects.
Goal(s)/Objective(s): Utilize slash from precommercial thinning operations to meet part of the needs for wood fiber and energy.
Key Findings: A system that involves moving trees from the woods to a main skid trail with a small machine and moving the bunched materials from the skid trail to the landing with a larger machine is necessary.
Views: 975
Downloads: 0
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How to Reduce Poisoning of Bees from Pesticides

Problem Addressed: Bee death from pesticides used against Spruce Budworm
Goal(s)/Objective(s): Explain measures to take so not to effect bees from pesticide use.
Views: 1144
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Toxicity of the IGR, Diflubenzuron, to Freshwater Invertebrates and Fish

Problem Addressed: Toxicity of insecticides used against spruce budworm on invertebrates and fish.
Goal(s)/Objective(s): Study the potential toxicological effects of the parent compound diflubenzuron and three of its known degradation products to freshwater fish and invertebrates.
Key Findings: The acute toxicity of the WP formulation of diflubenzuron varied greatly between species of aquatic invertebrates.
Views: 1182
Downloads: 1
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The Effects of Fenitrothion, Matacil and Orthene on Frog Larvae

Problem Addressed: Effects of insecticides used for spruce budworm control on other wildlife.
Goal(s)/Objective(s): Discuss the behavioral repertoire of Rana clamitans tadpoles in the laboratory.
Key Findings: Concentrations detrimental to anuran larvae would never be encountered under normal operational applications of these chemicals.
Views: 1048
Downloads: 0
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Impact of the 1974-81 Spruce Budworm Infestation on the Forests of Cape Breton Island

Problem Addressed: Spruce budworm infestation on Cape Breton Island, Nova Scotia beginning in 1974.
Goal(s)/Objective(s): Determine what the overall effects of the SBW infestation on the Island forests was.
Key Findings: Volume of merchantable spruce/fir growing stock was reduced, degree of damage varied by covertype, and over half of the projected living merchantable spruce and fir trees died either during or immediately following the SBW attack.
Views: 1150
Downloads: 3
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Impact of the 1974-81 Spruce Budworm Infestation on the Forests of Cape Breton Island

Problem Addressed: Spruce budworm infestation on Cape Breton Island, Nova Scotia beginning in 1974.
Goal(s)/Objective(s): Determine what the overall effects of the SBW infestation on the Island forests was.
Key Findings: Volume of merchantable spruce/fir growing stock was reduced, degree of damage varied by covertype, and over half of the projected living merchantable spruce and fir trees died either during or immediately following the SBW attack.
Views: 930
Downloads: 3
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Report of the 1986 Midcycle Resurvey of the Spruce-Fir Forest in Maine

Problem Addressed: Budworm outbreak effecting 1980 survey of supply and demand for spruce-fir in Maine.
Goal(s)/Objective(s): Validate the earlier forecasts and to update them to account for new or unexpected developments.
Key Findings: Maine forests, at least within the survey region, are adequately stocked with young trees.
Views: 979
Downloads: 2
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Recommendations for Improvement of Spruce Budworm Population and Damage Survey Methods in the State of Maine

Problem Addressed: Spruce budworm in Maine
Goal(s)/Objective(s): Describe egg mass and defoliation survey; to check results of the egg mass survey, obtain more detailed information on budworm populations, and predict damage in the coming year.
Recommendation: Eliminate any branch beating surveys for spruce budworm and not using light trap data when populations are high.
Views: 929
Downloads: 2
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