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    Long-term effects of grass ley set-aside on erosion rates and soil organic matter on sandy soils in east Shropshire, UK

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    Authors
    Fullen, Michael A.
    Booth, Colin A.
    Brandsma, R.T.
    Issue Date
    2006
    
    Metadata
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    Abstract
    The contribution of ryegrass (Lolium perenne) ley set-aside to soil conservation and soil organic matter (SOM) content was investigated. Ten runoff plots (7–15°, 12–27% slope) at the Hilton Experimental Site, Shropshire, UK, were put to a grass ley in April 1991. Runoff and erosion rates during 9 years were low, despite the occurrence of potentially erosive rains. Mean runoff was 0.24 ± 0.20% (±S.D.) of precipitation (n = 89 plot-years), compared with a 15-year mean value of 0.13 ± 0.04% on permanent (control) grassland. Mean erosion rate was 0.21 ± 0.14 t ha−1 year−1 (n = 69 plot-years). Erosion rate and slope were poorly correlated, suggesting leys are highly effective for soil conservation. Mean SOM content increased consistently and significantly on the set-aside plots from 20.4 g kg−1 in 1991 to 31.1 g kg−1 in 2001. Contrary to the usually strong relationship between SOM and clay content, the percentage silt exhibited a stronger correlation with SOM than percentage clay content. Furthermore, there were equally strong correlations between SOM and cumulative particle size fractions of both clay and silt contents. In the absence of significant quantities of clay in these sandy soils, silts assist binding of SOM, which has significance for assessing soil carbon sequestration potential.
    Citation
    Soil and Tillage Research, 89(1): 122-128
    Publisher
    Elsevier
    URI
    http://hdl.handle.net/2436/15864
    DOI
    10.1016/j.still.2005.07.003
    Additional Links
    http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TC6-4H16NT3-1&_user=1644469&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000054077&_version=1&_urlVersion=0&_userid=1644469&md5=2f84b00faa4ef4684c53228332e7cc7e
    Type
    Journal article
    Language
    en
    Description
    Metadata only
    ISSN
    01671987
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.still.2005.07.003
    Scopus Count
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    Faculty of Science and Engineering

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