16 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
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Soil science
Infiltrometer
Earth science; Soil science
A device for measuring the volume or flux (or rate) of liquid (usually water) entry downward into the soil.
Residual soil
Earth science; Soil science
A soil formed from, or resting on, consolidated rock of the same kind as that from which it was formed, and in the same location.
Anthraquic conditions
Earth science; Soil science
A special kind of aquic conditions which occurs in soils that are cultivated and irrigated.
Imhoff cone
Earth science; Soil science
A graduated volumetric cone used for determining settleable solids in liquid suspensions.
Symmetry concentration
Earth science; Soil science
That quantity of cations (or anions) equivalent to the exchange capacity of a soil. For example, if the cation exchange capacity of a soil is 10 cmolc kg-1of soil, then 1 symmetry concentration is ...
Soil structure grades
Earth science; Soil science
A grouping or classification of soil structure on the basis of inter- and intra-aggregate adhesion, cohesion, or stability. Four grades of structure are recognised as follows: * Structureless - No ...
Oxic horizon
Earth science; Soil science
A mineral soil horizon that is at least 30 cm thick and characterised by the virtual absence of weatherable primary minerals or 2:1 layer silicate clays, the presence of 1:1 layer silicate clays and ...
