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Inventory of Current Research on Spruce Budworm U.S. and Canada September 1977

Problem Addressed: Spruce Budworm

Goal(s)/Objective(s): Serve as an interim guide to research planners and a directory for researchers until the ongoing research information system contemplated by the Joint Research Program is in place.

Downloads: 2

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The Spruce Budworm in Maine in 1966

Problem Addressed: Spruce Budworm in Maine

Goal(s)/Objective(s): Overview of work against spruce budworm in Maine in 1966

Key Findings: The light population area is in good condition for 1967

Downloads: 3

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The Spruce Budworm in Maine in 1968

Problem Addressed: Spruce budworm in Maine in 1968

Goal(s)/Objective(s): Check on budworm development, larval and egg mass surveys, and aerial surveys for defoliation

Key Findings: The spruce budworm infestation can be expected to continue and probably intensify in the Oxbow area during 1969, given favorable weather conditions for the insect.

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The Spruce Budworm in Maine in 1968

Problem Addressed: Spruce budworm in Maine in 1968

Goal(s)/Objective(s): Check on budworm development, larval and egg mass surveys, and aerial surveys for defoliation

Key Findings: The spruce budworm infestation can be expected to continue and probably intensify in the Oxbow area during 1969, given favorable weather conditions for the insect.

Downloads: 7

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The Spruce Budworm in Maine in 1953

Problem Addressed: Spruce Budworm in Maine

Goal(s)/Objective(s): Describe condition of spruce budworm infestation in Maine in 1953

Key Findings: There is little doubt that natural control factors have effectively reduced or kept in check the budworm populations in most areas in northern Maine

Downloads: 5

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The Spruce Budworm in Maine in 1954

Problem Addressed: Spruce Budworm in Maine

Key Findings: A continued decrease in budworm populations is indicated for the Beavertail Pond - Fish River Lake area

Downloads: 5

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The Study of Resistance to Aphids in Crop Plants

Problem Addressed: Insect resistance in crop plants

Key Findings: Progress has been made on the practical use of resistance to aphids in the release to Kansas farmers of corn hybrid Kansas 1859, Ladak alfalfa, and Dicktoo barley, each resistant to a different aphid species. These are being used in plant breeding and give promise of eventual production of insect resistant varieties.

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The Role of Fungal Pathogens in Spruce Budworm Population Dynamics: Frequency and Temporal Relationships

Goal(s)/Objective(s): Study the influence of parasites and pathogens on the population dynamics of the spruce budworm

Key Findings: Larvae tend to die late in the afternoon, and sporulation takes place by mid-morning of the following day.

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The Spruce Budworm in Maine in 1955

Problem Addressed: Spruce Budworm in Maine in 1955

Key Findings: No spraying is recommended for 1956

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The timing of Erynia radicans resting spore germination in relation to mycosis of Choristoneura fumiferana

Goal(s)/Objective(s): Analysis of the influence of spore age and temperature on the timing of resting spore germination

Key Findings: Maximum percent germination, within the temperature range that permits germination, decreases as poststorage temperatures increase.

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Forest Pests: Spruce Budworm Documents

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