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Toxicity of aerosols to larch casebearer larvaeAuthor(s): Robert L. Lyon; Margaret E. May
Source: Res. Note. PSW-RN-208. Berkeley, CA: US Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4p
Publication Series: Research Note (RN)
Station: Pacific Southwest Research Station
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DescriptionSix insecticides were tested in the laboratory as aerosols against larch casebeare1 larvae. Their toxicity was determined by both direct contact and residual contact on filter paper. All six were highly toxic at less than 1.05 µg/ cm2 (the equivalent of 1.5 oz./acre). In decreasing order of toxicity at LD90 (direct contact) the insecticides tested were: Zectran, malathion, Sumithion (0.24 - .26 oz./acre), pyrethrins, Matacil (0.45 - .5O oz./acre), and Gardona (1.4 oz./acre). For field trial of the three most toxic materials, a dosage of 2 oz./acre is suggested.
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CitationLyon, Robert L.; May, Margaret E. 1970. Toxicity of aerosols to larch casebearer larvae. Res. Note. PSW-RN-208. Berkeley, CA: US Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4p
KeywordsColeophora Imicella, insecticides, aerosols, Zectran, malathion, Sumithion, Matacil, Gardona, toxicity tests
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