Goal(s)/Objective(s): Determine the margin of safety for stream invertebrates for Matacil 180 Oil Flowable, a candidate insecticide for the spruce budworm.
Key Findings: For aminocarb in this formulation, the threshold concentration that induces drift is about 30 µg/L.
Key Findings: Current management choices appear to lie between years of repetitive chemical spraying, or, if spraying is stopped, extensive tree mortality followed by collapse of the outbreak.
Goal(s)/Objective(s): Report on the spruce budworm condition in Maine in 1969
Key Findings: High egg mass counts indicate further damage will occur in 1970 in areas already badly damaged. The infestation is expected to grow in size.
Goal(s)/Objective(s): Present data from surveys and studies of the spruce budworm development, larval population and egg-mass densities, parasitism, occurrence of disease, defoliation, tree condition and tree mortality in budworm infested stands throughout the Province
Key Findings: Results of the spray operation will be presented by representatives of the Provincial Department of Forest Resources and Lands and the Department of Consumer Affairs and Environment
Problem Addressed: Attack of living pine trees by southern pine beetles
Key Findings: The direct relationship among spot incidence and mean distance from nearest spots within period 1 indicates that the more abundant spots were in an octant, the further apart they were on the average.