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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
Wilting coefficient
Earth science; Soil science
A calculated value of the approximate wilting point or permanent wilting percentage. Calculated as follows: Wilting coefficient = Hygroscopic coefficient/0. 68 or Wilting coefficient = ...
Microsite
Earth science; Soil science
A small volume of soil where biological or chemical processes differ from those of the soil as a whole, such as an anaerobic microsite of a soil aggregate or the surface of decaying organic residues.
Delta
Earth science; Soil science
A body of alluvium, nearly flat and fan-shaped, deposited at or near the mouth of a river or stream where it enters a body of relatively quiet water, usually a sea or lake.
Chronosequence
Earth science; Soil science
A group of related soils that differ, one from the other, primarily as a result of differences in time as a soil-forming factor.
Apatite
Earth science; Soil science
A mineral containing mainly clacium and phophate ions; (Ca5(PO4)3 (OH, Cl, F)
Soil permeability
Earth science; Soil science
(i) The ease with which gases, liquids, or plant roots penetrate or pass through a bulk mass of soil or a layer of soil. Since different soil horizons vary in permeability, the particular horizon ...
Miscellaneous areas
Earth science; Soil science
A kind of land area having little or no soil and thus supporting little or no vegetation without major reclamation. Includes areas such as beaches, dumps, rock outcrop, and badlands. The term is ...