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    • Journal of Range Management, Volume 48 (1995)
    • Journal of Range Management, Volume 48, Number 3 (May 1995)
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    Herbage dynamics on 2 Northern Great Plains range sites

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    Author
    Heitschmidt, R. K.
    Grings, E. E.
    Haferkamp, M. R.
    Karl, M. G.
    Issue Date
    1995-05-01
    Keywords
    fiber content
    crude protein
    biomass
    botanical composition
    Montana
    grasses
    forage
    
    Metadata
    Show full item record
    Citation
    Heitschmidt, R. K., Grings, E. E., Haferkamp, M. R., & Karl, M. G. (1995). Herbage dynamics on 2 Northern Great Plains range sites. Journal of Range Management, 48(3), 211-217.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644409
    DOI
    10.2307/4002423
    Additional Links
    https://rangelands.org/
    Abstract
    Quantity and quality of forage produced are primary determinants of level of livestock production derived from grazing lands. Moreover, species composition of herbage is often considered a primary determinant of the ecological condition of rangelands. The broad objective of this study was to quantify the productivity, growth dynamics, and quality of herbage growing on 2 Northern Great Plains range sites and to concurrently relate magnitude and composition of production to the ecological condition of the sites. Using frequent harvest techniques, the 2-year study showed herbage production on the highly productive silty range site averaged 219 g m-2 as compared to 218 g m-2 on the supposedly less productive clay pan range site. The primary reason the clay pan site proved to be as productive as the silty site was attributed to the greater amounts of introduced annual grasses on the clay pan (148 g m-2) than the silty site (104 g m-2). The annual grass component on the clay pan was a near equal mix (71 vs 51 g m-2) of Japanese brome (Bromus japonicus Thunb.) and cheatgrass (B. tectorum L.) whereas the overwhelming dominant on the silty site was cheatgrass (73 g m-2). Western wheatgrass [Pascopyrum smithii Rydh. (Love)] was the dominant perennial grass on both sites averaging 49 g m-2 on the clay pan site and 57 g m-2 on the silty site. There were minimal differences between sites in terms of nutrient quality values (i.e., crude protein, acid detergent fiber, neutral detergent fiber) with results showing clearly that age of tissue was the major factor altering seasonal forage quality values. Range condition analyses revealed the clay pan site was in fair ecological condition and the silty site was in good condition. Study results demonstrate the need for land management agencies to continue to refine productivity estimates as well as adopt new techniques for assessing the ecological condition of rangelands.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002423
    Scopus Count
    Collections
    Journal of Range Management, Volume 48, Number 3 (May 1995)

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