9 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
Inoculate
Earth science; Soil science
To treat, usually seeds, with microorganisms to create a favourable response. Most often refers to the treatment of legume seeds with Rhizobium or Bradyrhizobium to stimulate dinitrogen fixation but ...
Residual material
Earth science; Soil science
Unconsolidated and partly weathered mineral materials accumulated by disintegration of consolidated rock in place.
Coefficient of uniformity
Earth science; Soil science
The ratio D60/D10 which quantifies the shape of the particle size distribution curve.
Active layer
Earth science; Soil science
The top layer of ground subject to annual thawing and freezing in areas underlain by permafrost.
Aerobic digestion
Earth science; Soil science
The partial biological decomposition of suspended organic matter in waste water or sewage in aerated conditions.
Biological nitrate reduction
Earth science; Soil science
The process whereby nitrate is reduced by plants and microorganisms to ammonium for cell synthesis (nitrate assimilation, assimilatory nitrate reduction) or to nitrite by bacteria using nitrate as ...
Water-soluble phosphate
Earth science; Soil science
That part of the phosphorus in a fertiliser that is soluble in water as determined by prescribed chemical tests.
