20 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
Edaphology
Earth science; Soil science
The science that deals with the influence of soils on living things; particularly plants, including man's use of land for plant growth.
Silting
Earth science; Soil science
The deposition of silt from a body of standing water; choking, filling, or covering by stream-deposited silt that occurs in a place of retarded flow or behind a dam or reservoir. The term often ...
Humic acid
Earth science; Soil science
The dark-colored organic material that can be extracted from soil with dilute alkali and other reagents and that is precipitated by acidification to pH 1 to 2.
Oxidation state
Earth science; Soil science
The number of electrons to be added (or subtracted) from an atom in a combined state to convert it to the elemental form.
Surface-charge density
Earth science; Soil science
The excess of negative or positive charge per unit of surface area of soil or soil mineral.
Void ratio
Earth science; Soil science
The ratio of the volume of soil pore (or void) space to the solid-particle volume.
Effective stress
Earth science; Soil science
The stress transmitted through a soil by intergranular pressures.
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