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Susceptibility of Balsam Fir to Spruce Budworm Defoliation as Affected by Thinning

Problem Addressed: Spruce budworm defoliation of balsam fir.

Goal(s)/Objective(s): Quantify defoliation levels in treated and control plots in order to determine what effect, if any, thinning had on the susceptibility of balsam fir.

Key Findings: Susceptibility of balsam fir to spruce budworm defoliation was not affected after thinning in coniferous and hardwood forest types.

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Insecticide Field Efficacy: Summary Report for 1986

Problem Addressed: Insecticides

Goal(s)/Objective(s): Summarize 1986 insecticide field efficacy.

Key Findings: In the field, budworm populations develop slightly slower on black spruce than on white spruce or balsam fir.

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Spruce Budworm Management Planning — Limiting Environmental Impacts

Problem Addressed: Environmental impacts from forest management and processes.

Goal(s)/Objective(s): Give an appreciation of the types of environmental impacts that are associated with spruce budworm management and to demonstrate that pests can be managed in several ways, each with different impacts.

Key Findings: Environmental impacts depend on not only management strategy and insecticide but also on application rate, formulation, spray timing and block layout.

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Sticky-Board Trap for Measuring Dispersal of Spruce Budworm Larvae

Problem Addressed: Spread of spruce budworm larvae.

Goal(s)/Objective(s): Describe a new sticky-board traps for measuring early-larval dispersal of the spruce budworm, Choristoneura fumiferana (Clem.), and evaluates trap-board color and screen versus unscreened traps.

Key Findings: Dispersing spruce budworm larvae showed no preference for trap color; fewer nontarget arthropods were caught ondark-colored than on light-colored traps. Screened traps caught significantly more spruce budworm larvae than unscreened traps, and they were easier to examine.

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Summary of the EPA’s Evaluation of the Pesticide Carbaryl

Problem Addressed: Effects of insecticides

Goal(s)/Objective(s): Summary of EPA's evaluation of the pesticide carbaryl, and weight the risks of using a pesticide against its economic and social benefits.

Key Findings: Carbaryl is a registered pesticide which has been demonstrated not to cause unreasonable adverse effects when used in accordance with commonly recognized practices.

Downloads: 0

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Final Report 1973, Parasitoid Studies

Problem Addressed: Spruce budworm

Goal(s)/Objective(s): See if areas of spruce-fir containing mixtures of various species of hardwoods would also harbor (1) lower populations of budworm, and (2) greater percentages of parasites.

Key Findings: Spruce budworm populations were much lower in areas containing predominantly hardwoods mixed with some spruce and fir.

Downloads: 6

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The Presettlement Forest and Natural Disturbance Cycle of Northeastern Maine

Problem Addressed: The unknown character of the presettlement forests in New England.

Goal(s)/Objective(s): Estimate the species composition of the presettlement forests, to interpret their successional status, and to provide evidence on the frequency of large-scale natural disturbances.

Key Findings: Severe disturbance was fairly common in the presettlement forest of northern Maine, and data from the land surveys and individual virgin stands likewise indicate that most of the land surface supported climax stands that were frequently all-aged.

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Studies of Aerial Spraying Against the Spruce Budworm in New Brunswick Vs. Techniques for Large-Scale Egg and Defoliation Surveys 1953-55

Problem Addressed: The need for intensive survey coverage of the current spruce budworm outbreak

Goal(s)/Objective(s): Intelligent planning of control or presalvage operations against the spruce budworm.

Downloads: 3

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Wood Supply Analysis by Simulation

Problem Addressed: Wood supply

Goal(s)/Objective(s): Present a method of harvesting and silviculture in forest development.

Key Findings: By forecasting the long-term effects of silviculture and harvesting, it is possible to choose a management strategy to achieve desired benefits from the forest.

Downloads: 3

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Spruce Budworm Damage Assessment with 35mm Air Photos

Problem Addressed: Spruce budworm

Goal(s)/Objective(s): Assist forest managers at all levels in assessing damage and estimating possible future damage due to spruce budworm activity and provide an index which can be used to rank stands in terms of relative probability of future damage.

Downloads: 1

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