Soil science

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

Soil horizon

Earth science; Soil science

A layer of soil or soil material approximately parallel to the land surface and differing from adjacent genetically related layers in physical, chemical, and biological properties or characteristics ...

Chemical oxygen demand (COD)

Earth science; Soil science

A measure of the oxygen-consuming capacity of inorganic and organic matter present in water or wastewater. The COD test, like the BOD test, is used to determine the degree of pollution in an ...

Parts per million (PPM)

Earth science; Soil science

(i) The concentration of solutions expressed in weight or mass units of solute (dissolved substance) per million weight or mass units of solution. (ii) A concentration in solids expressed in weight ...