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

Concentration

Earth science; Soil science

The amount of suspended or dissolved particles, or elements in a unit volume or unit mass as specified at a given temperature and pressure.

Physical weathering

Earth science; Soil science

The breakdown of rock and mineral particles into smaller particles by physical forces such as frost action.

Piezometer head

Earth science; Soil science

The elevation at which water stands in a piezometer with respect to a point in question in the soil.

Salt tolerance

Earth science; Soil science

The ability of plants to resist the adverse, nonspecific effects of excessive soluble salts in the rooting medium.

Colloidal suspension

Earth science; Soil science

Suspension in water of particles so finely divided that they will not settle under the action of gravity, but will diffuse, even in quiet water, under the random impulses of Brownian motion. ...

Available water capacity

Earth science; Soil science

The amount of water released between in situ field capacity and the permanent wilting point (usually estimated by water content at soil matric potential of -1. 5 MPa). It is not the portion of water ...

Isomorphous substitution

Earth science; Soil science

The replacement of one atom by another of similar size in a crystal structure without disrupting or seriously changing the structure. When a substituting cation is of a smaller valence than the ...