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Silviculture and the Spruce Budworm in Maine

Problem Addressed: Spruce Budworm
Key Findings: Fir, the primary host of the budworm, is here to stay and while we may reduce its representation in our stands, it will always be sufficient to provide a food source for the budworm; silvicultural practices may reduce the losses from budworm attack, and can reduce the impact of the budworm on our total production by promoting rapid growth in new stands.
Views: 1227
Downloads: 1
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A Preliminary Report on the Effects of a Split Application of Reldan on Aquatic and Terrestrial Ecosystems

Problem Addressed: Application of RELDAN, pesticide
Key Findings: Knockdown of terrestrial invertebrates was slight, involving primarily small flying Diptera, but also Hymenoptera, Araneida and Plecoptera. Effects of the first spray were more pronounced, presumably due to warmer temperatures and increased insect activity.
Views: 974
Downloads: 0
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A Review of Studies in Maine on the Impact of Aerial Applications of Sevin-4-oil on the Macroinvertebrate Fauna of Streams and Ponds

Problem Addressed: Effects of Sevin-4-oil
Key Findings: Evidence of a relatively severe impact on the fauna and persistence of residues in the sediment indicate that ponds as well as streams should be included in future monitoring programs
Views: 896
Downloads: 0
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Aerial Photographic Techniques for Assessing the Impact of Spruce Budworm Defoliation in Maine

Goal(s)/Objective(s): Development of remote sensing techniques to better evaluate current feeding, tree and forest condition from past feeding, forest recovery after spraying, and mortality location from spruce budworm defoliation and other causes.
Key Findings: Tree and forest stand condition from past feeding was best interpreted on the CIR fall photos at scales of 1320 ft/in and larger
Views: 1094
Downloads: 0
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Debarking Wood Losses and Chip Quality of Deadwood

Problem Addressed: Losses of commercially valuatble softwood timber, particularly of white spruce and balsam fir
Goal(s)/Objective(s): Evaluate losses of softwoods due to spruce budworm as a function of the time since death
Views: 1129
Downloads: 0
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Detecting Forest Insect Pests in Canada

Goal(s)/Objective(s): Review McGugan's paper briefly, to describe the present capability of detecting forest insect pests in Canada, and finally, to offer a few comments about the future
Key Findings: If we possess enough knowledge about the systems involved and can monitor or measure the appropriate parameters, it might be possible to predict when and where outbreaks will occur.
Views: 1078
Downloads: 0
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Determination of Fenitrothion Residues in Honeybees and Their Products

Goal(s)/Objective(s): Describe the development of a gas-liquid chromatographic (GLC) method of analysis of the parent insecticide, its oxon and the cresol hydolysis product in honeybees (Apis mellifera L.) pollen, beeswax and honey from forested areas which had been treated with fenitrothion applied by aircraft.
Key Findings: Average recovery for the insecticide ranged from 84% in bees to 93% in honey.
Views: 1102
Downloads: 0
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