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    • Journal of Range Management, Volume 55 (2002)
    • Journal of Range Management, Volume 55, Number 1 (January 2002)
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    Grazing impacts on litter and roots: Perennial versus annual grasses

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    Author
    Mapfumo, E.
    Naeth, M. A.
    Baron, V. S.
    Dick, A. C.
    Chanasyk, D. S.
    Issue Date
    2002-01-01
    Keywords
    carbon
    Bromus inermis
    Bromus riparius
    triticale
    autumn
    annuals
    sown grasslands
    roots
    root systems
    perennials
    Alberta
    chemical composition
    spring
    weight
    nitrogen
    grazing intensity
    soil chemistry
    plant litter
    seasonal variation
    annuals
    organic C
    perennials
    total N
    sequestration
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    Citation
    Mapfumo, E., Naeth, M. A., Baron, V. S., Dick, A. C., & Chanasyk, D. S. (2002). Grazing impacts on litter and roots: Perennial versus annual grasses. Journal of Range Management, 55(1), 16-22.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/643620
    DOI
    10.2307/4003258
    10.2458/azu_jrm_v55i1_mapfumo
    Additional Links
    https://rangelands.org/
    Abstract
    Soil carbon (C) and nitrogen (N) storage in grasslands is a function of litter and root mass production. Research on how annual grasses compare with perennials for above ground and below ground mass production, and contributions to the soil C pool under pasture management is scarce. The objective of this research was to evaluate grazing intensity effects on litter and root mass, C and N pools of perennial grasses, smooth bromegrass (Bromus inermis L.) and meadow bromegrass (Bromus riparius Rhem.), and the annual grass, winter triticale (X Triticosecale Wittmack). Litter mass and C pool for the perennial grasses were greater than those for triticale. Litter C and N pools generally decreased with increased grazing intensity. Root mass was greater for the perennial grasses than for triticale at all grazing intensities. Meadow bromegrass generally produced more root mass than smooth bromegrass. Root C and N pools for triticale were 31 and 27%, respectively, of that for the perennial grasses. Estimated total C contribution (roots and litter) to the resistant soil organic C pool was 1.5 times greater for light compared to heavy grazing. Total C (litter + root) contribution for perennial grasses was 2.7 times greater than that for triticale. Perennial grasses provided a larger litter base and root system that promote greater storage of C in the soil compared with triticale.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4003258
    Scopus Count
    Collections
    Journal of Range Management, Volume 55, Number 1 (January 2002)

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