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    Laboratory Method for Determining the Lethal Exposure Time50 (LET50) of Contact Avicides Used in Wicked-Perches

    Published: 01 June 1979

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    A lethal exposure time50 (LET50) test was developed for laboratory use to provide a toxicological basis for the testing of acute contact avicides in wickedperches such as the Rid-A-Bird perch system. The LET50 measurement expresses the toxicity of particular concentrations of avicides that are exposed in such a manner as a function of exposure (contact) time. The correlation between field efficacy and our laboratory test should be excellent since the laboratory measurement of an avicide's dermal toxicity is carried out under conditions that simulate field exposure.


    vertebrate pest control, lethal exposure time, 50, (LET, 50, ), contact avicides, 3-chloro-4-methylbenzenamine, starlings, Sturnus vulgaris, starling control, wicked-perches, test procedures, testing

    Author Information:

    Nichols, CS
    agricultural pest control adviser, Crop Care Associates, Inc., Fresno, Calif

    Crabb, AC
    director of technical services, BlueBird Enterprises, Fresno, Calif

    Committee/Subcommittee: E35.17

    DOI: 10.1520/STP34980S