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    Author(s): Robert L. Lyon; Margaret E. May
    Date: 1970
    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
    PDF: View PDF  (526 KB)

    Description

    Six 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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    Citation

    Lyon, 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

    Keywords

    Coleophora Imicella, insecticides, aerosols, Zectran, malathion, Sumithion, Matacil, Gardona, toxicity tests

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