Volatilization of fenpropimorph and clopyralid after spraying onto a sugar beet crop

J.H. Smelt, R.A. Smidt, F. van den Berg, A.M. Matser, A. Stork, H. Ophoff

    Research output: Book/ReportReportProfessional

    Abstract

    Volatilization rates of pesticides were measured with two micrometeorological methods. For fenpropimorph, the highest rates (1.3-3.0% per hour) were measured in the first hours after application. The rate gradually declined to less than 0.01% per houron the sixth day. Clopyralid had much lower volatilization rates. They were highest (0.1% per hour) on the day after the day of application and declined below the detection limit (less than 0.01% per hour) on the sixth day after application. Rates calculated with the aerodynamic method were slightly higher than those calculated with the Bowen ratio.
    Original languageEnglish
    Place of PublicationWageningen
    PublisherDLO Winand Staring Centre
    Number of pages45
    Publication statusPublished - 1997

    Publication series

    Name
    No.136

    Keywords

    • pesticide residues
    • spraying
    • beta vulgaris
    • sugarbeet
    • clopyralid
    • fenpropimorph
    • volatilization

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