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

thermosequence

Earth science; Soil science

A group of related soils that differ, one from the other, primarily as a result of differences in temperature as a soil-formation factor.

crumb structure

Earth science; Soil science

A structural condition in which most of the peds are crumbs.

soil conditioner

Earth science; Soil science

A material which measurably improves specific soil physical characteristics or physical processes for a given use or as a plant growth medium. Examples include sawdust, peat, compost, synthetic ...

Reynolds number (Re)

Earth science; Soil science

A dimensionless parameter calculated from the pore water velocity (v), proe diameter (d), fluid density (ρ) and the fluid viscosity (μ): Re = ρvd/μ. Values below 2000 indicate laminar flow and ...

natural drainage class

Earth science; Soil science

A group of soils defined as having a specific range in relative wetness under natural conditions as it pertains to wetness due to a water table under conditions similar to those under which the soil ...

chemical potential

Earth science; Soil science

(i) The rate of change of Gibbs free energy, G, with respect to the number of moles of one component in a mixed chemical system at fixed temperature, pressure and number of moles of other components. ...