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Predators of the Spruce Budworm (1985)

Problem Addressed: Spruce budworm

Goal(s)/Objective(s): 1. Review available information on the predators of the spruce budworm; 2. Provide information on predator biologies, including life stages, modes of attack, and general importance; 3. Summarize the importance of predators and predation in population dynamics of the spruce budworm; 4. Review forest-management practices that enhance predator populations; and 5. List basic literature sources for identifying predators of the spruce budworm.

Key Findings: The information in the article is especially needed at low population levels of the pest so that we can learn how to manage the forest to prevent future outbreaks.

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Pilot Control Project to Determine Efficacy of Acephate, Carbaryl, and Trichlorfon Against the Spruce Budworm (Choristoneura fumiferana (Clem.)) in Maine — 1976

Problem Addressed: Insecticide use against spruce budworm

Goal(s)/Objective(s): Conduct a pilot control project to evaluate the efficacy of three different insecticides in reducing larval populations of the budworm and minimizing the amount of defoliation to host trees.

Key Findings: Each of the insecticides could be effectively used against the spruce budworm with minimal and transitory effects on the environment.

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A Critique and Commentary on the 1983 Supply/Demand Analysis for the Spruce-Fir Forest of Maine

Problem Addressed: Wood supply and demand for the spruce-fir forests of Maine

Goal(s)/Objective(s): Review the "Spruce-fir wood supply/demand analysis, Final Report, June 1983" report and interpret it.

Key Findings: Critiques methods used in the Report, presents an interpretation in the context of the analytical procedures used, draws attention to a group of complex policy issues that arise from the analyses, and deals with what Maine might do next.

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Harvesting Systems for Silvicultural Control of Spruce Budworm (1979)

Problem Addressed: Damage done by spruce budworm

Goal(s)/Objective(s): Using silviculture playing a major role in an integrated protection management program for reducing damage by the spruce budworm.

Key Findings: An analysis of a proposed partial cutting on a small private woodlot in southern Piscataquis County shows that shortwood methods, using the landowner's small farm tractor, are preferable in this case

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Spruce Mortality in Nova Scotia Caused by the Spruce Beetle, Dendroctonus Rufipennis Kpy., 1981

Problem Addressed: Spruce forestry mortality due to spruce beetle infestations in Nova Scotia

Key Findings: The distribution of the beetle in the spruce forests of Nova Scotia and an estimate of the merchantable volume affected by the beetle are discussed, along with notes on the behavior of the insect in infested white spruce stands.

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Findings & Recommendations for Public Review and Comment of the Budworm Policy Review Committee (Nov. 1979)

Problem Addressed: Spruce budworm and its effects on the public

Key Findings: Findings and recommendations that are a result of the Committee's deliberations, taking into account the public comments and reactions, to be considered by the Commissioner in making his final recommendations to the Legislature

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Spruce Budworm in Maine; The 1983 Maine Spruce Budworm Suppression Project

Problem Addressed: Spruce budworm in Maine

Goal(s)/Objective(s): Spray against spruce budworm areas with a potential for extreme and high budworm hazard

Key Findings: Conditions improved by the second week of June and all airports finished their operations by the morning of June 23.

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Spray Deposit Assessment for the 1979 Spruce Budworm Suppression Project

Goal(s)/Objective(s): To determine the presence of insecticide in as many target and non-target areas as possible during the course of the spray project

Recommendation: Replace spray cards with foliage sampling and glass plates where Sevin is used

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Population Dynamics of the Major North American Needle-Eating Budworms (1993)

Problem Addressed: Western Spruce Budworm

Goal(s)/Objective(s): Analyze data from nine projects in six western States to provided 1,251 life tables and to produce projection capabilities for defoliation and successive budworm densities as functions of preceding density, site and stand attributes, interested influences, systematic year-to-year changes in survival, recent insecticide treatment, and weather.

Key Findings: The predator-limitation theory of Hairston and others (1960) is not adequate to explain population limitations in this group of herbivores

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Pulping of Budworm-Killed Balsam Fir (1982)

Problem Addressed: Spruce budworm-killed balsam fir

Goal(s)/Objective(s): Compare properties of the dead balsam fir to those of live, healthy fir.

Key Findings: Spruce budworm-killed trees had significantly decreased moisture contents; lower specific gravity and bark content, and smaller sized chips as a function of time-since-death.

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