soil bulk density — The mass of dry soil per unit bulk soil [22] … Lexicon of Cave and Karst Terminology
Bulk density — is a property of powders, granules and other divided solids, especially used in reference to soil. It is defined as the mass of many particles of the material divided by the total volume they occupy. The total volume includes particle volume,… … Wikipedia
Soil morphology — is the field observable attributes of the soil within the various soil horizons and the description of the kind and arrangement of the horizons. [cite book | last = Buol | first = Stanley W. | authorlink = | coauthors = Southard, Randal J.,… … Wikipedia
Soil compaction — occurs when weight of livestock or heavy machinery compresses soil, causing it to lose pore space. Affected soils become less able to absorb rainfall, thus increasing runoff and erosion. Plants have difficulty in compacted soil because the… … Wikipedia
Soil physics — is the study of soil physical properties and processes. It is applied to management and prediction under natural and managed ecosystems. Soil physics deals with the dynamics of physical soil components and their phases as solids, liquids, and… … Wikipedia
soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… … Universalium
Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock … Wikipedia
Characterisation of pore space in soil — Soil is essential to most animals on the earth. It is a relatively thin crust where an even smaller portion contains much of the biological activity. Soil consists of three different phases. A solid phase (≈ 20%) that contains mainly minerals of… … Wikipedia
Consolidation (soil) — Consolidation is a process by which soils decrease in volume. According to Karl Terzaghi consolidation is any process which involves decrease in water content of a saturated soil without replacement of water by air. [citation needed] In general… … Wikipedia
Rhizosphere (ecology) — Rhizosphere is the narrow region of soil that is directly influenced by root secretions and associated soil microorganisms [web cite | url = http://uwstudentweb.uwyo.edu/T/Twhite/ | title = Microbial Health of the Rhizosphere | accessdate = 2006… … Wikipedia
