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USDA Soil Texturing Field Flow Chart

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  • by Midwest GeoSciences Group

    This flow chart is a single-sided, plastic-coated guide for assisting with soil texturing procedures and assigning a texture class using the USDA texture triangle.

    The chart uses stepwise procedures (adopted from Foth and others, 1992) for estimating sand, silt, and clay content. The guide provides instruction for determining subclass and assigning textural class modifiers for rock fragments greater than 2 mm and organic compositional textural modifiers.

    2009 / with instruction sheets
    Catalog #X941

    NGWA member — $13.00
    Nonmember — $17.00