6 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
Microbial population
Earth science; Soil science
The sum of living microorganisms in a given volume or mass of soil.
Hydrodynamic dispersion
Earth science; Soil science
The process wherein the solute concentration in flowing solution changes in response to the interaction of solution movement with the pore geometry of the soil, a behaviour with similarity to ...
Cation exchange
Earth science; Soil science
The interchange between a cation in solution and another cation in the boundary layer between the solution and surface of negatively charged material such as clay or organic matter.
Economic rate
Earth science; Soil science
The application rate of material, usually fertilizer, that gives the highest economic returns for the crop produced.
Absorptance
Earth science; Soil science
The ratio of the radiant flux absorbed by a body to that incident upon it. Also called absorption factor.
Soil organic matter
Earth science; Soil science
The organic fraction of the soil exclusive of undecayed plant and animal residues.
Root zone
Earth science; Soil science
The portion of the soil profile from which plants absorb water and nutrients.
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