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

Imogolite

Earth science; Soil science

A poorly crystalline aluminosilicate mineral with an ideal composition SiO2 Al2O3 2. 5H2( + ). It appears as threads consisting of assemblies of a tube unit with inner and outer diameters of 1. 0 ...

Clod

Earth science; Soil science

A compact, coherent mass of soil varying in size, usually produced by plowing, digging, etc. , especially when these operations are performed on soils that are either too wet or too dry and usually ...

Salic horizon

Earth science; Soil science

A mineral soil horizon of enrichment with secondary salts more soluble in cold water than gypsum. A salic horizon is 15 cm or more in thickness, contains at least 20 g kg-1salt, and the product of ...

Kaolinite

Earth science; Soil science

A clay mineral of the kaolin subgroup. It has a 1:1 layer structure composed of shared sheets of Si-O tetrahedrons and Al-(O,OH) octahedrons with very little isomorphous substitution.

Application rate

Earth science; Soil science

(i) (irrigation) Rate at which water is applied per unit area; usually in mm per hour, (ii) weight or volume of a fertilizer, soil amendment, or pesticide applied per unit area.