Residues in Douglas-fir needles and forest litter following and aerial application of acephate (Orthene).
D000401:Aircraft; D001000:Ants; D001681:Biological Assay; D001955:British Columbia; D005898:Glass; D007306:Insecticides / Q000008:administration & dosage / Q000032:analysis*; D009946:Organothiophosphorus Compounds; D010573:Pesticide Residues / Q000032:analysis*; D010575:Pesticides; D014197:Trees
D007306:Insecticides; D009946:Organothiophosphorus Compounds; D010573:Pesticide Residues; D010575:Pesticides