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The Effects of Sevin-4-Oil on Aquatic Insect Communities of Streams: A Continuation of 1976 Studies

Key Findings: The 1977 Plecopttera populations on streams treated in 1976 were not similar in generic composition to populations collected on the same stream in 1976 although they were equal in numbers of individuals and taxa.

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DDT in Maine Forests; A Report to the 104th Maine Legislature

Problem Addressed: Undesirable effects resulting from applications of DDT to the forest for spruce budworm control.

Key Findings: Certain types of animals reflect DDT contamination of the environment quite well.

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Carbamate Bioassay Using Daphnia magna

Problem Addressed: Carbamate insecticides in fruits and vegetable crops.

Goal(s)/Objective(s): To develop a device to determine insecticides in fruit and vegetable crops.

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An Analysis of the Spruce Budworm Control Program in Maine: Landowner Policy Options

Problem Addressed: Policy issues relating to forest industries in Maine

Key Findings: Current level of infestation can only be deemed as critical.

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Aerial Spraying Program Conducted Against the Spruce Budworm in Quebec in 1980 and Forecast for 1981

Problem Addressed: Spruce Budworm in Quebec

Key Findings: The 1980 spray program gave successful results

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Aerial Spraying Program Against the Spruce Budworm in Quebec for 1979 and Forecast for 1980

Problem Addressed: 1979 Aerial Spraying Against Spruce Budworm in Quebec and Forecast for 1980.

Key Findings: Spray program gave satisfactory results over 96% of the treated area; the application was done late but the populations were not very high (11 larvae/45cm branch and the delay had no bad consequence.

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Aerial Spraying Program Against the Gypsy Moth

Problem Addressed: Gypsy moth (Lymantria dispar)

Key Findings: The biological repression program was a total success. The residual egg mass populations are significant as to the result of the spraying. No control program will be carried out in 1980 in Quebec.

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Aerial Spraying Against the Spruce Budworm in Quebec in 1975 and Plans for 1976

Problem Addressed: Spruce Budworm infestation has spread so much in Quebec in the last two years that it is no longer possible to spray all the balsam and spruce stands that would need to be treated

Key Findings: Results of sprayings are satisfactory, considering the fact that the Spruce Budworm larvae have reached in 1975 population levels that had ever been recorded in the previous infestation

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1980 Maine Spruce Budworm Suppression Project: 1980 Conditions and Project Efficacy

Problem Addressed: Maine spruce budworm suppression project

Key Findings: Spray efficacy in terms of survival, adjusted mortality, unadjusted mortality, and defoliation was determined for each treatment variation and area.

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