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

Permanent wilting point

Earth science; Soil science

The largest water content of a soil at which indicator plants, growing in that soil, wilt and fail to recover when placed in a humid chamber. Often estimated by the water content at -1. 5 MPa soil ...

Subarctic Brown Forest soils

Earth science; Soil science

Soils similar to Brown Forest soils except having more shallow sola and average temperatures of <5 °C at 18 inches or more below the surface.

Vapour flow

Earth science; Soil science

The gaseous flow of water vapour in soils from a moist or warm zone of higher potential to a drier or colder zone of lower potential.

Polymerize

Earth science; Soil science

To combine two or more molecules of a compound to form a more complex compound with a higher molecular weight.

Electrode potential (Eh)

Earth science; Soil science

The potential that is generated between an oxidation or reduction half-reaction and the standard hydrogen electrode (0. 0v at pH = 0). In soils it is the potential created by oxidation-reduction ...

Land capability

Earth science; Soil science

The suitability of land for use without permanent damage. Land capability, as ordinarily used in the USA, is an expression of the effect of physical land conditions, including climate, on the total ...

Constant-potential surface

Earth science; Soil science

Variable charge surfaces are called constant potential surfaces because at constant activity of the potential determining ion (e.g. constant pH) the electrical potential difference between the solid ...