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 welding

Earth science; Soil science

A process in which pedogenesis in a surface layer of parent rock or sediment feeds physicochemical and other imprints downward into a subjacent buried soil formed in a separate parent rock or ...

Soil reaction

Earth science; Soil science

The degree of acidity or alkalinity of a soil, usually expressed as a pH value. Descriptive terms commonly associated with certain ranges in pH are: extremely acid, 9. 1.

Soil test

Earth science; Soil science

A chemical, physical, or biological procedure that estimates the suitability of the soil to support plant growth. (Sometimes used as an adjective to define fractions of soil components, e.g., "soil ...

Sandy

Earth science; Soil science

(i) Texture group consisting of sand and loamy sand textures. (ii) Family particle-size class for soils with sand or loamy sand textures and <35% rock fragments in upper subsoil horizons.

Water-stable aggregate

Earth science; Soil science

A soil aggregate which is stable to the action of water such as falling drops, or agitation as in wet-sieving analysis.

Organic soil

Earth science; Soil science

A soil in which the sum of the thicknesses of layers containing organic soil materials is generally greater than the sum of the thicknesses of mineral layers.