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    • Journal of Range Management, Volume 44 (1991)
    • Journal of Range Management, Volume 44, Number 1 (January 1991)
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    Effects of competition on spatial distribution of roots of blue grama

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    Author
    Coffin, D. P.
    Lauenroth, W. K.
    Issue Date
    1991-01-01
    Keywords
    intraspecific competition
    competitive ability
    plant morphology
    root systems
    Bouteloua gracilis
    plant communities
    spatial distribution
    plant competition
    
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    Citation
    Coffin, D. P., & Lauenroth, W. K. (1991). Effects of competition on spatial distribution of roots of blue grama. Journal of Range Management, 44(1), 68-71.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644860
    DOI
    10.2307/4002642
    Additional Links
    https://rangelands.org/
    Abstract
    The spatial distribution of roots of the perennial grass blue grama [Bouteloua gracilis (H.B.K.) Lag. ex Grifftths] was evaluated under 2 competitive conditions. The radioistope 14C was used to label roots of blue grama plants growing with and without neighboring plants of the same lifeform. The majority of labeled blue grama roots (>75%) were found within 5 cm of the plant and within 10 cm of the soil surface. Labeled roots extended at least 30 cm from the edge of the plant and to depths of at least 90 cm. Root system morphology was insensitive to changes in competitive conditions. Based on our estimates of the depth and breadth of the root system of an average blue grama plant, roots associated with at least 4 other blue grama plants of average size and separated by average distances of 10 cm might occur within the volume of soil associated with roots of this plant. The distribution of total root biomass was not representative of the distribution of labeled roots, even when neighboring grasses were removed.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002642
    Scopus Count
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    Journal of Range Management, Volume 44, Number 1 (January 1991)

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