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Effects of Insecticides on Soil Algal Population

Goal(s)/Objective(s): Present the effect of three commonly used insecticides on the algal population in a lateritic soil under two moisture levels.

Key Findings: When the three insecticides are applied at the recommended levels of field application (5 to 10 ppm), are not harmful to the soil algal population, which contribute much to the soil fertility.

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Spruce-Fir Market Trends

Key Findings: Overall level of harvest of spruce-fir pulpwood in Maine did not change much from 1967 to 1976, although spruce-fir sawlog production more than doubled.

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The Control of Forest Insects in Ontario – 1986

Problem Addressed: Forest insect pests

Goal(s)/Objective(s): Spray programs against these forest pests

Key Findings: In general, the 1986 protection program was completed satisfactorily

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The Spruce Budworm in Maine in 1960

Problem Addressed: Spruce Budworm in Maine

Goal(s)/Objective(s): Report on the spruce budworm condition in Maine in 1960 and the 1960 Control Project

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The Spruce Budworm in Maine in 1962

Goal(s)/Objective(s): Report on the spruce budworm condition in Maine in 1962

Key Findings: Based on egg mass surveys, a decided increase in both population and defoliation may be expected in 1963 over most of the area having medium to heavy defoliation in 1962.

Recommendation: Aerial spraying be carried out in 1963

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The Spruce Budworm in Maine in 1963

Goal(s)/Objective(s): Report on the spruce budworm condition in Maine in 1963

Key Findings: Within the area sprayed twice, control was as good and probably better than previous operations.

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The Spruce Budworm in Maine in 1964

Goal(s)/Objective(s): Report on the spruce budworm condition in Maine in 1964

Key Findings: Outside the main infestation area, budworm populations have declined. While 1963 was a good year for the spruce budworm and populations increased in all areas not subject to the spray program, 1964 was less favourable and remaining populations were reduced.

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The Spruce Budworm in Eastern North America

Goal(s)/Objective(s): Discussion of the spruce budworm in eastern North America

Key Findings: Many facts about spruce budworm biology and behavior suggest that its long-term success is not closely tied, to individual trees or even stands--as are some less mobile insects, such as scales and even sawflies

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Maine Spruce Budworm Aerial Spray Computer Users Guide

Problem Addressed: Spruce Budworm

Goal(s)/Objective(s): Provide estimates of a spray project's total operating cost, the number of spray teams required, the hours of flying time by aircraft type and airfield, and a detailed report listing the airfield and aircraft type recommended for each spray block.

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Notes on the Biology of Synetaeris tenuifemur Walley (Hymenoptera: Ichneumonidae)

Goal(s)/Objective(s): Data suggests S. tennifemur is associated with endemic budworm populations

Key Findings: Sufficient data have not been obtained to develop a precise relationship between the number of budworm attacked and budworm density at any one parasite density.

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Forest Pests Documents

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