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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
Drain
Earth science; Soil science
(i) To provide channels, such as open ditches or drain tile, so that excess water can be removed by surface or by internal flow. (ii) To lose water (from the soil) by percolation.
Niche
Earth science; Soil science
(i) The particular role that a given species plays in the ecosystem; (ii) The physical space occupied by an organism.
Lime-pan
Earth science; Soil science
A hardened layer cemented by calcium carbonate. Better term may be caliche.
Beidellite
Earth science; Soil science
A dioctahedral smectite with the majority of the charge originating in the tetrahedral layer.
Claypan
Earth science; Soil science
A dense, compact, slowly permeable layer in the subsoil having a much higher clay content than the overlying material, from which it is separated by a sharply defined boundary. Claypans are usually ...
Poorly drained
Earth science; Soil science
A drainage class referring to soils which have evidence (e.g., mottles) of seasonal water tables at depths between 0 and 8 inches.
Anaerobic
Earth science; Soil science
(i) The absence of molecular oxygen. (ii) Growing in the absence of molecular oxygen (such as anaerobic bacteria). (iii) Occurring in the absence of molecular oxygen (as a biochemical process).
