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The Lethal Toxicity of Matacil 1.8 F to Rainbow Trout and its In Vivo Metabolism

Problem Addressed: Use of insecticides

Goal(s)/Objective(s): Determine the lethal toxicity of Matacil 1.8 F and Matacil 1.8 D ready-to-use formulations.

Key Findings: Aminocarb and MA were detected in fish tissue 96 hours after exposure.

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Measurement of Vapour Pressure and Volatility from Foliage of Fenitrothion and Aminocarb

Problem Addressed: Use of insecticides against spruce budworm

Goal(s)/Objective(s): Describe measurements of the vapour pressures of pure and formulated fenitrothion and aminocarb from quartz sand, glass surfaces and plant foliage.

Key Findings: In our initial determinations of VP's from sand saturators, a doubling of the loading with either fenitrothion or aminocarb resulted in ≤2% change in the vapour pressures obtained. This indicated that the vapour space around the quartz particles was saturated and that the values obtained experimentally were equilibrium values under the conditions used.

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The Spruce Budworm in Maine in 1951

Problem Addressed: Spruce budworm in Maine

Goal(s)/Objective(s): Provide information on ground, aerial, and egg mass surveys, special studies of the effect of environment and natural control factors on budworm populations, and rearing of parasites.

Key Findings: Populations of large larvae and pupae were considerably less in most of the observation points and in the special study plots.

Recommendation: Although no spraying will be recommended for 1952 in Maine the State and timberland owners should continue to be prepared to combat the past if it increases to outbreak proportions.

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Compendium of Eastern Spruce Budworm Program Status Reports for the Eastern Canadian Provinces and Maine

Problem Addressed: Spruce budworm

Goal(s)/Objective(s): Describe budworm research projects being planned for initiation prior to June 30, 1980.

Key Findings: Sevin-4-Oil, or one or more of its constituents, potentiates the virus Herpes virus varicellae, the causative virus in chicken pox and "shingles".

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Effects of Forest Insect Spraying on Northern Maine Trout Streams

Problem Addressed: Spruce budworm effects

Goal(s)/Objective(s): Study the effects of DDT spraying on fish populations in the treated area.

Key Findings: Populations of brook trout and other fishes were reduced considerably by DDT spraying in 1958.

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Environmental Impact and Efficacy of Imidan Used for Spruce Budworm Control in Maine

Problem Addressed: Spruce budworm

Goal(s)/Objective(s): Determine environmental impact and efficacy of Imidan as use as insecticide against spruce budworm

Key Findings: There is an apparent lag of between 7 and 14 days following spray before mortality rates are greater than observed in unsprayed areas. There is an apparent larval feeding deterrent action produced by the chemical.

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Spruce Budworm on Christmas Trees

Problem Addressed: Spruce budworm and use of insecticides effecting Christmas trees

Goal(s)/Objective(s): Control of insects on Christmas trees

Key Findings: Trees damaged by budworm or other insects should not be cut because if they are left for a few years they will often recover and become suitable for Christmas trees.

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Brook Trout Studies in the Icewater Creek Watershed

Problem Addressed: Insecticides effecting the environment

Goal(s)/Objective(s): Examine in-depth a number of aquatic and terrestrial habitats and micro-habitats and their resident animal populations to determine the nature and degree of inherent risk, the level of actual exposure, and the actual response to forest pest management strategies involving aerial applications of pest control agents.

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Brook Trout Population Study on Zectran Sprayed Area 1967

Problem Addressed: Spruce budworm control

Goal(s)/Objective(s): Determine effectiveness of Zectran for control of the spruce budworm, and effects on trout populations.

Key Findings: The application of Zectran at 0.15 pounds per acre appears to have had no immediate adverse affects on the trout populations in the sample sections.

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