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    • Journal of Range Management, Volume 43 (1990)
    • Journal of Range Management, Volume 43, Number 5 (September 1990)
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    Warm-season grass establishment as affected by post-planting atrazine application

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    Author
    Bahler, C. C.
    Moser, L. E.
    Griffin, T. S.
    Vogel, K. P.
    Issue Date
    1990-09-01
    Keywords
    sowing
    atrazine
    Bouteloua curtipendula
    application timing
    Schizachyrium scoparium
    stand establishment
    phytotoxicity
    seedlings
    Nebraska
    Sorghastrum nutans
    Panicum virgatum
    Andropogon gerardii
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    Citation
    Bahler, C. C., Moser, L. E., Griffin, T., & Vogel, K. P. (1990). Warm-season grass establishment as affected by post-planting atrazine application. Journal of Range Management, 43(5), 421-424.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644964
    DOI
    10.2307/3899004
    Additional Links
    https://rangelands.org/
    Abstract
    Atrazine [6-chloro-N-ethyl-N’-(l-methylethyl)-1,3,4-diamine] provides effective weed control during big bluestem (Andropogon gerardii Vitman) and switchgrass (Panicum virgatum L.) establishment. However, most other desirable warm-season grasses are susceptible to atrazine injury at establishment. The objective of this study was to determine if atrazine application after seeding would affect susceptible warm-season grass establishment. Big bluestem, switchgrass, indiangrass [Sorghastrum nutans (L.) Nash] sideoats grama [Bouteloua curtipendula (Michx.) Torr.], and little bluestem [Schizachyrium scoparium (Michx.) Nash] were seeded into greenhouse flats or field plots and 2.2 kg a.i. atrazine/ha applied at 0 (atrazine control), 7, 14, or 21 days after planting. An untreated control was used also. In greenhouse experiments, Indiangrass and sideoats grama plant survival increased when atrazine applications were delayed. Switchgrass, big blue stem, and little bluestem plant survival was not affected by atrazine application. Field studies were conducted in 1983, 1985, and 1986 using the same soil type, grass species, and application periods as the greenhouse study. Delaying atrazine application 7 or more days after planting generally favored survival of lndlangrass and sideoats grama. Big bluestem, switchgrass, and little bluestem were not affected by atrazine treatment. Delaying the application of atrazine may favor the survival of atrazine sensitive species. However, further research needs to be conducted on various soil types and environmental conditions before this can be a recommended practice.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899004
    Scopus Count
    Collections
    Journal of Range Management, Volume 43, Number 5 (September 1990)

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