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

Convection-dispersion equation (CDE)

Earth science; Soil science

Also known as the Advection-Dispersion Equation (ADE). Partial differential equation describing the total solute flux as the sum of the passive movement of solute by convection and the solute ...

Antagonism

Earth science; Soil science

Production of a substance by one organism that inhibits one or more other organisms. The terms antibiosis and allelopathy have also been used to describe such cases of chemical inhibition.

R-selected

Earth science; Soil science

In ecological theory, that group of organisms in soil that rapidly proliferate in response to an abundance of resources. Analogous to zymogenous microorganisms.

Water use efficiency

Earth science; Soil science

Dry matter or harvested portion of crop produced per unit of water consumed.

Activation energy

Earth science; Soil science

A term used in kinetics to indicate the amount of energy required to bring all molecules in one mole of a substance to their reactive state at a given temperature. Conceptually, this energy barrier ...