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

Lodgement till

Earth science; Soil science

A basal till characterised by compact, fissile or platy structure and containing coarse fragments oriented with their long axes generally parallel to the direction of ice movement.

Piping pipe flow

Earth science; Soil science

A preferential flow process in which water flows rapidly through a large discrete pore causing tunnel erosion.

Impeded drainage

Earth science; Soil science

A condition which hinders the movement of water through soils under the influence of gravity.

Flagstone

Earth science; Soil science

A relatively thin, flat rock fragment, from 150 to 380 mm on the long axis.

Saline-alkali soil

Earth science; Soil science

(i) A soil containing sufficient exchangeable sodium to interfere with the growth of most crop plants and containing appreciable quantities of soluble salts. The exchangeable-sodium percentage is ...

Soil variant

Earth science; Soil science

A soil whose properties are believed to be sufficiently different from other known soils to justify a new series name but comprising such a limited geographic area that creation of a new series is ...

Soil class

Earth science; Soil science

A group of soils defined as having a specific range in one or more particular property(ies) such as acidity, degree of slope, texture, structure, land-use capability, degree of erosion, or drainage.