Soils are composed of a mixture of sand, silt, clay and organic matter ... Since a soil's CEC comes from the clay and organic matter present, it can be estimated from soil texture and color. Table 1 ...
Texture: The relative proportion of sand, silt and clay. Ustoll: Mollisols with an ustic soil moisture regime. Water potential: The amount of work that must be done per unit quantity of pure water ...
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