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

slow release

Earth science; Soil science

A fertilizer term used interchangeably with delayed release, controlled release, controlled availability, slow acting, and metered release to designate a rate of dissolution (usually in water) much ...

birnessite

Earth science; Soil science

(Na0. 7Ca0. 3)Mn7O14•2. 8H2O A black manganese oxide that is common in iron-manganese nodules of soils. It has a layer structure.

colloid

Earth science; Soil science

A particle, which may be a molecular aggregate, with a diameter of 0. 1 to 0. 001 μm. Soil clays and soil organic matter are often called soil colloids because they have particle sizes that are ...

braided stream

Earth science; Soil science

A channel or stream with multiple channels that interweave as a result of repeated bifurcation and convergence of flow around interchannel bars, resembling (in plan view) the strands of a complex ...

sample

Earth science; Soil science

A part of a population taken to estimate a parameter of the whole population.

exchangeable anion

Earth science; Soil science

A negatively charged ion held on or near the surface of a solid particle by a positive surface charge and which may be easily replaced by other negatively charged ions ( e.g. with a Cl- salt).