8 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
Orthids
Earth science; Soil science
Previous to 1994 this term was used to indicate Aridisols that have a cambic, calcic, petrocalcic, gypsic, or salic horizon or a duripan but that lack an argillic or natric horizon. The term was ...
Specific activity
Earth science; Soil science
Number of enzyme activity units per mass of protein. Often expressed as micromoles of product formed per unit time per milligramme of protein. Also used in radiochemistry to express the ...
Boralfs
Earth science; Soil science
Alfisols that have formed in cool places. Boralfs have frigid or cryic but not pergelic temperature regimes, and have udic moisture regimes. Boralfs are not saturated with water for periods long ...
Genetic
Earth science; Soil science
Resulting from, or produced by, soil-forming processes; for example, a genetic soil profile or a genetic horizon.
Evaporites
Earth science; Soil science
Residue of salts (including gypsum and all more soluble species) precipitated by evaporation.
Dysic
Earth science; Soil science
Low level of bases in soil material, specified at family level of classification.
Anion
Earth science; Soil science
An atom or atomic group that is negatively charged because of a gain in electrons.
