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

Nitrification

Earth science; Soil science

Biological oxidation of ammonium to nitrite and nitrate, or a biologically induced increase in the oxidation state of nitrogen.

Substratum

Earth science; Soil science

Any layer lying beneath the soil solum, either conforming or unconforming.

Soil organic residue

Earth science; Soil science

Animal and vegetative materials added to the soil of recognisable origin.

Desert soil

Earth science; Soil science

A zonal great soil group consisting of soils with a very thin, light-colored surface horizon, which may be vesicular and is ordinarily underlain by calcareous material; formed in arid regions under ...

Foliar fertilisation

Earth science; Soil science

Application of a dilute solution of liquid fertilisers to plant foliage.

Ped

Earth science; Soil science

A unit of soil structure such as a block, column, granule, plate, or prism, formed by natural processes (in contrast with a clod, which is formed artificially).