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

Coefficient of linear extensibility (COLE)

Earth science; Soil science

1. The percent shrinkage in one dimension of a moulded soil between two water contents, e.g. between its plastic limit to air dry. 2. Meaure of shrink-swell potential of soil.

Archaebacteria

Earth science; Soil science

(i)Prokaryotes with cell walls that lack murein, having ether bonds in their membrane phospholipids, that are characterised by growth in extreme environments. (ii) A primary biological kingdom ...

Albic horizon

Earth science; Soil science

A mineral soil horizon from which clay and free iron oxides have been removed or in which the oxides have been segregated to the extent that the colour of the horizon is determined primarily by the ...

Sustained yield

Earth science; Soil science

A continual, annual, or periodic yield of plants or plant material from an area; implies management practises which will maintain the productive capacity of the land, be economically feasible, and ...

Bay

Earth science; Soil science

(i) Any terrestrial formation resembling a bay of the sea, as a recess or extension of lowland along a river valley or within a curve in a range of hills, or an arm of a prairie extending into, or ...

Lava flow

Earth science; Soil science

A solidified body of rock formed from the lateral, surficial outpouring of molten lava from a vent or fissure, often lobate in form.

Ionic strength

Earth science; Soil science

A parameter that estimates the interaction between ions in solution. It is calculated as one-half the sum of the products of ionic concentration and the square of ionic charge for all the charged ...