Technical Bulletin, Edição 1585

acephate activity aerial application aircraft areas Bacillus thuringiensis bark beetle Blue Mountains California canopy carbaryl chemical cocoons conifers Corvallis crown Dahlsten damage defoliation deposition diameter diflubenzuron Dimilin disease Douglas-fir tussock moth droplets effects egg masses Entomol epizootic estimated evaluation factors Figure foliage Forest Service formulations grand fir growth habitat types height impact in² increased insect insecticides instars larvae lb/gal per acre Mason mexacarbate model branch mortality needles northern Idaho occur Oreg Oregon parasites particles percent pest pesticides phase pheromone plots polyhedrosis ponderosa pine population density predation production Program Final Rep projects pseudotsugata Range Exp reduced sampling simulated species spray stand studies temperature tests timber top-kill treatment trichlorfon tussock moth defoliation tussock moth larvae tussock moth outbreaks tussock moth populations understory Univ unpubl USDA USDA DFTM Res variable virus Washington western white fir Wickman wildlife wind