24 Terms
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Soil science
That science dealing with soils as a natural resource on the surface of the earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils per se; and these properties in relation to the use and management of soils.
Industry: Earth science
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Soil science
Penetrability
Earth science; Soil science
The ease with which a probe can be pushed into the soil. (May be expressed in units of distance, speed, force, or work depending on the type of penetrometer used. )
Spatial variability
Earth science; Soil science
The variation in soil properties (i) laterally across the landscape, or (ii) vertically downward through the soil.
Residence time
Earth science; Soil science
The time required for an individual solute ion or molecule to travel through the soil.
Cleavage plane
Earth science; Soil science
The smooth, flat surface along which a mineral readily breaks.
Saturation extract
Earth science; Soil science
The solution extracted from a soil at its saturation water content.
Water table
Earth science; Soil science
The upper surface of ground water or that level in the ground where the water is at atmospheric pressure.
Cation exchange capacity (CEC)
Earth science; Soil science
The sum of exchangeable bases plus total soil acidity at a specific pH, values, usually 7. 0 or 8. 0. When acidity is expressed as salt extractable acidity, the cation exchange capacity is called ...
