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    • Journal of Range Management, Volume 41 (1988)
    • Journal of Range Management, Volume 41, Number 5 (September 1988)
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    Atrazine dissipation and off-plot movement in a Nebraska sandhills subirrigated meadow

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    Author
    Brejda, J. J.
    Shea, P. J.
    Moser, L. E.
    Waller, S. S.
    Issue Date
    1988-09-01
    Keywords
    groundwater contamination
    dispersion
    herbicide residues
    physicochemical properties
    atrazine
    herbicides
    Nebraska
    runoff
    vegetation
    kinetics
    range management
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    Citation
    Brejda, J. J., Shea, P. J., Moser, L. E., & Waller, S. S. (1988). Atrazine dissipation and off-plot movement in a Nebraska sandhills subirrigated meadow. Journal of Range Management, 41(5), 416-420.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644979
    DOI
    10.2307/3899581
    Additional Links
    https://rangelands.org/
    Abstract
    Atrazine [6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamine] can be used to modify species composition of naturally subirrigated Sandhills meadows. The potential for ground water contamination exists as the water table depth ranges from 0 to 3 m. Atrazine was applied at 2.2 and 3.4 kg ha-1 in May 1984, August 1984, or May 1985 to a Gannett fine sandy loam (Typic Haplaquoll, coarse-loamy, mixed, mesic) in a Nebraska Sandhills subirrigated meadow. Residues of atrazine applied in 1984 and 1985 carried over into 1985 and 1986, respectively. Herbicide dissipation and off-plot movement were monitored in 1985 by sampling soil at 0 to 5 cm and 5 to 15 cm depths within and outside the experimental areas. Atrazine dissipation initially approached zero-order kinetics after May 1985 application, but generally followed first-order kinetics during the entire 320-day sampling period. Atrazine half-life in the entire 0 to 15 cm sampling zone was 46 +/- 7 days. Herbicide concentrations at the 5 to 15 cm sampling depth did not exceed levels measured at 5 days after application. Low and highly variable atrazine concentrations detected in some of the untreated plots and in some off-plot soil samples indicated minimal lateral movement of the herbicide.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899581
    Scopus Count
    Collections
    Journal of Range Management, Volume 41, Number 5 (September 1988)

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