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  • Field wind tunnel testing of two silt loam soils on the North American Central High Plains

    Author(s)
    Scott Van Pelt, R.
    Baddock, Matthew
    M. Zobeck, Ted
    J. Schlegel, Alan
    F. Vigil, Merle
    Acosta-Martinez, Veronica
    Griffith University Author(s)
    Baddock, Matthew
    Year published
    2013
    Metadata
    Show full item record
    Abstract
    Wind erosion is a soil degrading process that threatens agricultural sustainability and environmental quality globally. Protecting the soil surface with cover crops and plant residues, practices common in no-till and reduced tillage cropping systems, are highly effective methods for shielding the soil surface from the erosive forces of wind and have been credited with beneficial increases of chemical and physical soil properties including soil organic matter, water holding capacity, and wet aggregate stability. Recently, advances in biofuel technology have made crop residues valuable feed stocks for ethanol production. ...
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    Wind erosion is a soil degrading process that threatens agricultural sustainability and environmental quality globally. Protecting the soil surface with cover crops and plant residues, practices common in no-till and reduced tillage cropping systems, are highly effective methods for shielding the soil surface from the erosive forces of wind and have been credited with beneficial increases of chemical and physical soil properties including soil organic matter, water holding capacity, and wet aggregate stability. Recently, advances in biofuel technology have made crop residues valuable feed stocks for ethanol production. Relatively little is known about cropping systems effects on intrinsic soil erodibility, the ability of the soil without a protective cover to resist the erosive force of wind. We tested the bare, uniformly disturbed, surface of long-term tillage and crop rotation research plots containing silt loam soils in western Kansas and eastern Colorado with a portable field wind tunnel. Total Suspended Particulate (TSP) were measured using glass fiber filters and respirable dust, PM10 and PM2.5, were measured using optical particle counters sampling the flow to the filters. The results were highly variable and TSP emission rates varied from less than 0.5 mg m-2 s-1 to greater than 16.1 mg m-2 s-1 but all the results indicated that cropping system history had no effect on intrinsic erodibility or dust emissions from the soil surfaces. We conclude that prior best management practices will not protect the soil from the erosive forces of wind if the protective mantle of crop residues is removed.
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    Journal Title
    Aeolian Research
    Volume
    10
    DOI
    https://doi.org/10.1016/j.aeolia.2012.10.009
    Subject
    Geomorphology and Regolith and Landscape Evolution
    Earth Sciences
    Environmental Sciences
    Publication URI
    http://hdl.handle.net/10072/55630
    Collection
    • Journal articles

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