21 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
electrical resistivity
Earth science; Soil science
A measure of the resistance of soil to conduct electricity used to infer the soil water matric potential from predetermined calibrations.
saline soil
Earth science; Soil science
A nonsodic soil containing sufficient soluble salt to adversely affect the growth of most crop plants. The lower limit of saturation extract electrical conductivity of such soils is conventionally ...
air dry
Earth science; Soil science
(i) The state of dryness at equilibrium with the water content in the surrounding atmosphere. The actual water content will depend upon the relative humidity and temperature of the surrounding ...
gypsic horizon
Earth science; Soil science
A mineral soil horizon of secondary CaSO4 enrichment that is >15 cm thick, has at least 50 g kg-1 more gypsum than the C horizon, and in which the product of the thickness in centimeters and the ...
h layer
Earth science; Soil science
A layer occurring in mor humus consisting of well-decomposed organic matter of unrecognizable origin (sapric material).
one-third-bar percentage
Earth science; Soil science
The percentage of water contained in a soil that has been saturated, subjected to, and is in equilibrium with, an applied pressure of one-third bar. Approximately the same as one-third-atmosphere ...
delta
Earth science; Soil science
A body of alluvium, nearly flat and fan-shaped, deposited at or near the mouth of a river or stream where it enters a body of relatively quiet water, usually a sea or lake.
