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

Fixation phosphorus

Earth science; Soil science

The immobilisation of phosphorus by strong adsorption or precipitation.

Benchmarking

Earth science; Soil science

The process of comparing a model's predictions to other "verified" codes to determine that model's code is funtioning properly.

Gradient

Earth science; Soil science

The rate of change of a potential with distance parallel to flow.

Stokes' law

Earth science; Soil science

The equation expressing the force of viscous resistance on a smooth, rigid sphere moving in a viscous fluid under standard temperature and pressure, namely F=3πηDV where F is the force of ...

Intrinsic permeability

Earth science; Soil science

The property of a porous material that expresses the ease with which gases or liquids flow through it. Often symbolised by k = Kn/pg, where K is the Darcy hydraulic conductivity, n is the fluid ...

Macropore flow

Earth science; Soil science

The tendency for water applied to the soil surface at rates exceeding the upper limit of unsaturated hydraulic conductivity, to move into the soil profile mainly via saturated flow through ...

Fertiliser analysis

Earth science; Soil science

The percent composition of a fertiliser as determined in a laboratory and expressed as total N, available phosphoric acid (P2O5) equivalent, and water-soluble potash (K2O) equivalent.