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    • Journal of Range Management, Volume 40 (1987)
    • Journal of Range Management, Volume 40, Number 5 (September 1987)
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    Atrazine, Spring Burning, and Nitrogen for Improvement of Tallgrass Prairie

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    Author
    Gillen, R. L.
    Rollins, D.
    Stritzke, J. F.
    Issue Date
    1987-09-01
    Keywords
    atrazine
    grassland improvement
    fertilizer application
    ecological succession
    nitrogen
    prescribed burning
    Oklahoma
    Poaceae
    prairies
    botanical composition
    
    Metadata
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    Citation
    Gillen, R. L., Rollins, D., & Stritzke, J. F. (1987). Atrazine, spring burning, and nitrogen for improvement of tallgrass prairie. Journal of Range Management, 40(5), 444-447.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645136
    DOI
    10.2307/3899608
    Additional Links
    https://rangelands.org/
    Abstract
    Spring application of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine] (1.1 kg ha-1 a.i.), burning, and nitrogen (33 kg ha-1 as ammonium nitrate) were evaluated alone and in all combinations for improvement of mid-seral tallgrass prairie in northcentral Oklahoma. Studies were initiated in 1984 (Study I) and 1985 (Study II). Precipitation and successional status of the vegetation at treatment application were higher for Study II than for Study I. Atrazine effectively reduced forbs and annual grasses for 2 years after application. Atrazine stimulated warm-season perennial grasses but did not generally increase total herbage production. Burning was similar to atrazine for annual grass control in both studies. Burning was also similar to atrazine for forb control in Study I but had no impact on forb production in Study II. Burning increased perennial grass production only in the second year of Study I. Burning decreased total herbage production in the first year of Study I by reducing annual grasses and forbs but did not affect total herbage production on other dates. Nitrogen did not consistently increase perennial grass production but did increase forb production by 250-300% when applied alone. Both atrazine and burning rapidly shifted species composition in favor of desirable perennial grasses. Nitrogen was not as effective in changing species composition either alone or in combination with atrazine and burning. The number and complexity of treatment responses declined as successional status and/or precipitation improved.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899608
    Scopus Count
    Collections
    Journal of Range Management, Volume 40, Number 5 (September 1987)

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