20 Terms
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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
Add a new termContributors in Soil science
Soil science
Unaccommodated
Earth science; Soil science
Applied to peds. Virtually none of the faces of adjoining peds are moulds of each other.
Exchangeable sodium percentage (ESP)
Earth science; Soil science
Exchangeable sodium fraction expressed as a percentage.
Lower plastic limit
Earth science; Soil science
The minimum water mass content at which a small sample of soil material can be deformed without rupture.
Residuum
Earth science; Soil science
Unconsolidated, weathered, or partly weathered mineral material that accumulates by disintegration of bedrock in place.
Aspect
Earth science; Soil science
The direction toward which a slope faces with respect to the compass or to the rays of the sun.
Gypsum requirement
Earth science; Soil science
The quantity of gypsum or its equivalent required to reduce the exchangeable sodium fraction of a given amount of soil to an acceptable level where dispersion of soil colloids does not take place.
Drainage pattern
Earth science; Soil science
The configuration of arrangement in plan view of the natural stream courses in an area. It is related to local geologic and geomorphologic features and history.
