Forest Pests: Spruce Budworm Documents

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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.
Views: 915
Downloads: 0
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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
Views: 986
Downloads: 3
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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.
Views: 845
Downloads: 0
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The Spruce Budworm in Maine in 1956

Problem Addressed: Spruce Budworm in Maine in 1956
Goal(s)/Objective(s): Overview of spruce budworm condition in Maine in 1956
Key Findings: No applied control is recommended for 1957.
Views: 1107
Downloads: 3
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The Uptake of Sevin by Pacific Oysters and Bottom Muds

Problem Addressed: The insecticide Sevin's effects
Key Findings: While Sevin residue in bottom mud was present at a higher level than in oysters following direct application, it declined rapidly to a barely detectable level in 8 days and disappeared by the 16th day.
Views: 997
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The Spruce Budworm in Maine in 1957

Problem Addressed: Spruce Budworm in Maine in 1957
Goal(s)/Objective(s): Overview of spruce budworm condition in Maine in 1957
Key Findings: Population and natural control surveys should be continued in 1958 on the same scale in the general fir-spruce areas outside of the control area
Recommendation: A control project of aerial spraying for 1958 over approximately 300,000 acres in northeastern Aroostook County.
Views: 1034
Downloads: 2
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Zectran Pilot Test to Control Spruce Budworm in Belmont and Chamberlain Creeks, Blackfood River Drainage, Montana

Problem Addressed: Spruce Budworm
Goal(s)/Objective(s): Determine the aerial transport of smoke within the spray areas, and optimum spray time.
Key Findings: Budworm population was reduced 47.8 ± 5.5 in Chamberlain Creek and 70.0 ± 4.2 in Belmont Creek.
Views: 820
Downloads: 0
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Balsam Fir (Abies Balsamea (L.) Mill.) Phenology in Maine

Goal(s)/Objective(s): Facilitate the critical timing of spruce budworm sampling, the initiation of spray programs, and should enable an observer to predict the occurrence of phenological events throughout the state.
Key Findings: The area of latest phenology occupies the general region of the state north of Greenville and west of Ashland.
Views: 965
Downloads: 1
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