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    • Journal of Range Management, Volume 35 (1982)
    • Journal of Range Management, Volume 35, Number 1 (January 1982)
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    Effects of Two Years of Irrigation on Revegetation of Coal Surface-Mined Land in Southeastern Montana

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    Author
    Depuit, E. J.
    Skilbred, C. L.
    Coenenberg, J. G.
    Issue Date
    1982-01-01
    Keywords
    Montana
    
    Metadata
    Show full item record
    Citation
    Depuit, E. J., Skilbred, C. L., & Coenenberg, J. G. (1982). Effects of two years of irrigation on revegetation of coal surface-mined land in southeastern Montana. Journal of Range Management, 35(1), 67-74.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/646181
    DOI
    10.2307/3898523
    Additional Links
    https://rangelands.org/
    Abstract
    Responses of reseeded vegetation in the first two growing seasons (1978 and 1979) to irrigation on topsoiled sodic mine spoils are presented. In terms of above-ground productivity and stand composition, irrigation significantly promoted growth of seeded perennial grasses and legumes in total. This stimulation was most pronounced in 1979 for the cool-season grasses, slender wheatgrass, smooth bromegrass and western wheatgrass and the invading cool-season legume yellow sweetclover. Other cool-season grasses and warm-season grasses were stimulated by initial irrigation, but were either unaffected or retarded (due to competitive relationships) by continued irrigation. Productivity of invading annual weeds was significantly curtailed by irrigation by 1979. Although differences in composition occurred, total stand productivity was similar for irrigated and nonirrigated plots in 1978, a year of above-average precipitation. In 1979, a drier year, total stand productivity was nearly three times higher under irrigation than nonirrigation. In the first year of study (1978), a higher measured index of stand structural diversity occurred under irrigation. This relationship became reversed in 1979, with higher structural diversity in nonirrigated plots. Root biomass was significantly higher in nonirrigated than in irrigated plots. This difference between irrigation and nonirrigation was most pronounced in the applied topsoil zone. Root distribution was skewed towards shallowest soil depths under irrigation to a far greater extent than under nonirrigation.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3898523
    Scopus Count
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    Journal of Range Management, Volume 35, Number 1 (January 1982)

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