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    • Journal of Range Management, Volume 51 (1998)
    • Journal of Range Management, Volume 51, Number 4 (July 1998)
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    Morphological development of 2 warm-season grasses in the Nebraska Sandhills

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    Author
    Hendrickson, J. R.
    Moser, L. E.
    Moore, K. J.
    Waller, S. S.
    Issue Date
    1998-07-01
    Keywords
    heat sums
    harvest date
    Andropogon gerardii var. paucipilus
    developmental stages
    Calamovilfa longifolia
    plant morphology
    ambient temperature
    rain
    Nebraska
    weight
    species differences
    Andropogon gerardii
    tillering
    tillers
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    Citation
    Hendrickson, J. R., Moser, L. E., Moore, K. J., & Waller, S. S. (1998). Morphological development of 2 warm-season grasses in the Nebraska Sandhills. Journal of Range Management, 51(4), 456-462.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644135
    DOI
    10.2307/4003334
    Additional Links
    https://rangelands.org/
    Abstract
    Morphological development of grasses has numerous implications to rangeland management including the timing and amount of herbivory. The objective of this study was to quantify the developmental morphology of prairie sandreed [Calamovilfa longifolia (Hook.) Scribn.] and sand bluestem [Andropogon gerardii var. paucipilus (Nash) Fern.] tiller populations. Tiller populations of these 2 grasses were studied for 2 years in the Nebraska Sandhills. Plant development was evaluated using a growth staging system which quantifies the development of tiller populations. A morphological growth index for each species was calculated from either the weighted average of tiller numbers reported as mean stage count (MSC) or tiller weight reported as mean stage weight (MSW) and correlated with the independent variables of growing degree days (GDD) and day of year (DOY). Correlation coefficients with the independent variables were greater than 0.97 for MSC and MSW within years and greater than 0.90 between years. Greater rainfall and warmer temperatures in 1991 increased the number of tillers in the more advanced morphological stages in prairie sandreed, but tiller weight rather than tiller number increased in more advanced stages of sand bluestem. A majority of the harvested tillers were vegetative throughout the sampling period but by the end of the growing season, a wide range of morphological stages were present. The use of grazing to prevent the formation of culmed tillers in these grasses may be unnecessary because of the high proportion of vegetative tillers and the wide range of morphological stages available for selection by livestock.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4003334
    Scopus Count
    Collections
    Journal of Range Management, Volume 51, Number 4 (July 1998)

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