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The Spruce Budworm in Newfoundland in 1986

Problem Addressed: Spruce Budworm in Newfoundland

Key Findings: Sampling was conducted in conjunction with the hemlock looper egg survey in late October. The forecast will be provided after the completion of processing of samples.

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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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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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Patterns of Balsam Fir Mortality Caused by an Uncontrolled Spruce Budworm Outbreak

Goal(s)/Objective(s): Determine the relationship of tree and stand mortality to cumulative defoliation, the variability in tree mortality within and between stands and its relation to tree, stand, and site characteristics, and to evaluate the accuracy of regression equations presented by MacLean (1980) for predicting stand mortality during an outbreak.

Key Findings: There is a need for quantitative predictions of the impact of uncontrolled budworm outbreaks on stand yield for use in timber supply projections and the best model of tree mortality caused by budworm is that of a constant proportion of the host volume or density (i.e. a linear relationship)

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Potential Export Markets for Spruce and Fir Wood

Goal(s)/Objective(s): Explore the opportunities for Maine to export and increase the cut of spruce and fir wood to Europe.

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Maine Spruce Budworm Spray Operations Manual

Problem Addressed: Spruce Budworm in Maine

Goal(s)/Objective(s): Provide a source of information and guidance for personnel involved with Maine spruce budworm suppression programs.

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Response of Breeding Birds to Aerial Sprays of Trichlorfon (Dylox) and Carbaryl (Sevin-4-Oil) in Montana Forests

Goal(s)/Objective(s): Report the results of a pilot control project with trichlorfon (Dylox) and carbaryl (Sevin-4-Oil), with particular reference to the effects of the chemicals on 20 bird species.

Key Findings: No significant effects of trichlorfon or carbaryl sprays on the numbers of breeding pairs, bird abundance, nest success, mortality rates, or the activities of brain cholinesterase in the breeding population were detected.

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Spruce Budworm Defoliation in Relation to Introgression in Red and Black Spruce

Goal(s)/Objective(s): Rating branch samples for severity of budworm damage to 1968 foliage, using 10 defoliation categories ranging from rating one for no defoliation to rating ten for complete defoliation.

Key Findings: Post-cutting regeneration techniques would favor the less shade-tolerant black spruce.

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Spruce Budworm Parasitoid Surveys in Ontario

Goal(s)/Objective(s): Summarize the special parasitoid surveys and experimental releases of the budworm egg parasite Trichogramma minutum done by the OMNR

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“Do I Have a Budworm-Susceptible Forest?”

Goal(s)/Objective(s): Present criteria to help forest managers determine if their forest is budworm-susceptible

Key Findings: In the intervening 25 years, management of the forest in northern New Brunswick has not resulted in any reduction in their susceptibility to spruce budworm attack

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