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

Gravitational water

Earth science; Soil science

Water which moves into, through, or out of the soil under the influence of gravity.

Soil fertility

Earth science; Soil science

The quality of a soil that enables it to provide nutrients in adequate amounts and in proper balance for the growth of specified plants or crops.

Soil heat-flux density

Earth science; Soil science

The amount of heat entering a specified cross-sectional area of soil per unit time.

Weight

Earth science; Soil science

The force which an object exerts in a gravitational field because of its mass; weight = mg.

Air-filled porosity

Earth science; Soil science

The fraction of the bulk volume of soil that is filled with air at any given time or under a given condition, such as a specified soil-water content or soil-water matric potential.

Fertiliser grade

Earth science; Soil science

The guaranteed minimum analysis in percent of the major plant nutrient elements contained in a fertiliser material or in a mixed fertilizer. The analysis is usually designated as N-P2O5-K2O; but it ...

Soil map

Earth science; Soil science

A map showing the distribution of soils or other soil map units in relation to the prominent physical and cultural features of the earth's surface. The following kinds of soil maps are recognised in ...