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.
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.