any of various organic or inorganic materials added to soil to improve its structure.
noun 1. any of various methods to achieve the maximum utilization of the land and preserve its resources through such controls as crop rotation, prevention of soil erosion, etc. soil conservation noun 1. the preservation of soil against deterioration or erosion, and the maintenance of the fertilizing elements for crop production
noun, Geology. 1. creep of soil on even slopes; often accelerated by spring freeze-and-thaw or general periglacial conditions. Compare creep (def 22a). noun 1. the gradual downhill movement, under the force of gravity, of soil and loose rock material on a slope
verb (used with object) 1. to make unclean, dirty, or filthy, especially on the surface: to soil one’s clothes. 2. to smirch, smudge, or stain: The ink soiled his hands. 3. to sully or tarnish, as with disgrace; defile morally: to soil one’s good name. verb (used without object) 4. to become soiled: White soils […]
noun 1. one of a number of soil classes having the same kinds of horizons in the same sequence and under similar moisture and temperature regimes.