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Forest and Range Insect Problems Stan Meso
Operational Considerations in Brush Control
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acid active ingredient aerial application aerial sprays agricultural amitrole amount animals bait beetle behavior biological brush control burrow carbamate carboxylic acid chlorinated compounds concentrations conifers containers Corvallis damage degradation deposit Douglas fir drift drop droplet ecosystem effect endrin environment environmental ester evaporation exposure factors feeding feet Figure forest and range forest floor fungicides gallons gopher habitat hazard helicopter herbicides increase infested insect insecticides label land levels Maksymiuk microns monitoring mountain beaver nitrogen nozzles operation Oregon State University organisms orifice percent persistence pest control pesticide phenol phorate picloram plant poison population potential pressure problem pump range lands rate of application residues result ring Sample point seed shrubs soil species spray atomization spray formulation spray tips sprayer stream structure surface swath width Table tank target area toxic trap trees triazines trophic levels U.S. Forest Service USDA vegetation volatility wildlife zectran