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

Stony

Earth science; Soil science

(i) A stoniness class in which there are enough stones at or near the soil surface to be a continuing nuisance during operations that the mix the surface layer, but they do not make most such ...

Root mean square (RMS)

Earth science; Soil science

A statistic used to evaluate the adequacy of a model by comparing the predicted value (P) to the observed value (O) or a number (n) of values such that: RMS = ((1/nΣ(Pi -Oi)2)0. 5

Eluvial horizon

Earth science; Soil science

A soil horizon that has been formed by the process of eluviation.

Fifteen-bar percentage

Earth science; Soil science

The percentage of water contained in a soil that has been saturated, subjected to, and is in equilibrium with, an applied pressure of 15 bars. Approximately the same as the fifteen-atmosphere ...

Mottled zone

Earth science; Soil science

A layer that is marked with spots or blotches of different colour or shades of color. The pattern of mottling and the size, abundance, and colour contrast of the mottles may vary considerably and ...

Beach

Earth science; Soil science

A gently sloping area adjacent to a lake or ocean that lies between the low and high water marks, which is devoid of vegetation, and is composed of unconsolidated material, typically sand or gravel, ...

Phosphate rock

Earth science; Soil science

A microcrystalline, calcium fluorophosphate of sedimentary or igneous origin of varying P content. It is usually concentrated and solubilized to be used directly or concentrated in manufacture of ...