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    • Journal of Range Management, Volume 50 (1997)
    • Journal of Range Management, Volume 50, Number 2 (March 1997)
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    Leaf nutritive value related to tiller development in warm-season grasses

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    Author
    Hendrickson, J. R.
    Moser, L. E.
    Moore, K. J.
    Waller, S. S.
    Issue Date
    1997-03-01
    Keywords
    Andropogon gerardii var. paucipilus
    developmental stages
    leaves
    Calamovilfa longifolia
    cell walls
    lignin
    protein content
    fiber content
    Nebraska
    Andropogon gerardii
    environmental factors
    crude protein
    tillers
    in vitro digestibility
    nutritive value
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    Citation
    Hendrickson, J. R., Moser, L. E., Moore, K. J., & Waller, S. S. (1997). Leaf nutritive value related to tiller development in warm-season grasses. Journal of Range Management, 50(2), 116-122.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644130
    DOI
    10.2307/4002367
    Additional Links
    https://rangelands.org/
    Abstract
    Assessing nutritive value of key grass species in relation to plant development is essential for producers to efficiently manage livestock enterprises. Changes in nutritive value for tiller populations of 2 common Nebraska Sandhills grasses, prairie sandreed [Calamovilfa longifolia (Hook.) Scribn.] and sand bluestem [Andropogon gerardii var. paucipilus (Nash) Fern], in response to morphological development was evaluated at the Gudmundsen Sandhills Laboratory (GSL) during the 1990 and 1991 growing seasons. Morphological development was determined on a 40 to 60-tiller sample from each block (12 blocks in 1990 and 8 blocks in 1991) at ten-day intervals using a comprehensive staging system. In vitro dry matter digestibility (IVDMD), crude protein (CP), neutral detergent fiber (NDF) and lignin were determined for leaves and correlated with the morphological index (Mean Stage by Count), growing degree days and day of the year. Leaf NDF values of both species remained constant while leaf IVDMD declined throughout the summer indicating that decline in leaf IVDMD was caused by declining cell wall digestibility. Leaf IVDMD was influenced more by tissue aging than advancing morphological stage. Leaf CP was significantly different between years but not between species indicating leaf CP was largely influenced by environmental factors. In both species and for both years, leaf CP initially declined rapidly to low levels and then stabilized during the vegetative phase. Nutritive value of a single vegetative morphological stage over the growing season was similar to the leaf tissue of the tiller populations. Management decisions by producers depend on accurate assessment of changes in nutritive value during the growing season in tiller populations of these 2 important grasses.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002367
    Scopus Count
    Collections
    Journal of Range Management, Volume 50, Number 2 (March 1997)

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