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    Author(s): Robert L. Lyon
    Date: 1971
    Source: Res. Note PSW-RN-249. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p
    Publication Series: Research Note (RN)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (370 KB)

    Description

    Thirteen insecticides were tested against Ips paraconfusus Lanier, and six against the western pine beetle (Dendroctonus brevicomis Lec.). The ranking of toxicity at LD90 by topical application to I. paraconfusus was: SD 3450 > endosulfan > malathion > lindane > phorate > carbayl > carbophenothion = Imidan > crotoxyphos > dimethoate > DDT > Dilan > trichlorfon. The ranking of toxicity to D. brevicomis was: Zectran = dichlorvos > Dursban > malathion > pyrethins = Endane. Five compounds-Zectran, Dursban, malathion, dichlomos, pyrethrins-show promise for study as possible alternatives to lindane, which is now commonly used for bark beetle suppression.

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    Citation

    Lyon, Robert L. 1971. Contact toxicity of 17 insecticides applied topically to adult bark beetles. Res. Note PSW-RN-249. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p

    Keywords

    Ips paraconfusus, Dendroctonus brevicomis, toxicity tests, Zectran, Dursban, malthion, dichlorvos, pyrethrins, lindane

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