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

Mollic epipedon

Earth science; Soil science

A surface horizon of mineral soil that is dark coloured and relatively thick, contains at least 5. 8 g kg-1organic carbon, is not massive and hard or very hard when dry, has a base saturation of >50% ...

Sapric material

Earth science; Soil science

Organic soil material that contains less than 1/6 recognisable fibres (after rubbing) of undecomposed plant remains. Bulk density is usually very low, and water holding capacity very high.

Ferrihydrite

Earth science; Soil science

Fe5O7(OH)•4H2O. A dark reddish-brown, poorly crystalline iron oxide mineral that forms in wet soils. Occurs in concretions and placic horizons and often can be found in ditches and pipes that drain ...

Leachate

Earth science; Soil science

Liquids that have percolated through a soil and that contain substances in solution or suspension.

Equation of continuity

Earth science; Soil science

An equation expressing the conservation of mass or energy as it applies to soil water, heat, air, etc. , moving through soil.

Gibbsite

Earth science; Soil science

Al(OH)3. A mineral with a platy habit that occurs in highly weathered soils and in laterite. Also, may be prominent in the subsoil and saprolite of soils formed on crystalline rock high in ...