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soil
soil surface layer of the earth, composed of fine rock material disintegrated by geological processes; and humus , the organic remains of decomposed vegetation. In agriculture , soil is the medium that supports crop plants, both physically and biologically. Soil may be from a few inches to several feet thick.
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Cite this article
"soil." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 2 Sep. 2010 <http://www.encyclopedia.com>. "soil." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (September 2, 2010). http://www.encyclopedia.com/doc/1E1-soil.html "soil." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved September 02, 2010 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-soil.html |
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soil
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "soil." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 2 Sep. 2010 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "soil." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (September 2, 2010). http://www.encyclopedia.com/doc/1O13-soil.html AILSA ALLABY and MICHAEL ALLABY. "soil." A Dictionary of Earth Sciences. 1999. Retrieved September 02, 2010 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-soil.html |
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soil
soil The natural, unconsolidated, mineral and organic material occurring on the surface of the Earth; it is a medium for the growth of plants.
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Cite this article
MICHAEL ALLABY. "soil." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 2 Sep. 2010 <http://www.encyclopedia.com>. MICHAEL ALLABY. "soil." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (September 2, 2010). http://www.encyclopedia.com/doc/1O7-soil.html MICHAEL ALLABY. "soil." A Dictionary of Plant Sciences. 1998. Retrieved September 02, 2010 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-soil.html |
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Soil properties as predictors of yield response of clover (Trifolium...
...clay, %organic carbon, and cation exchange capacity). Materials and methods Soils Soils with different soil properties (Table 1) and representative of soils used for agriculture in the region (McArthur 1991) were collected from unfertilised... |
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Soil quality fundamentals
...capacity of natural soils or soil substitutes to support...function or use of the soil. In these articles, soils are primarily considered...Pedology, the science of soil formation and classification, tells us that soils are ... |
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SOIL CHEMISTRY AND THE QUALITY OF HUMUS
...the dynamic nature of soils. Soil chemistry is fundamentally...research laboratories, soils are very complex chemical systems. Soil water is more accurately...fundamental to the function of soils as plant growth media. SOIL ... |
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Soil ingestion: a concern for acute toxicity in children.
...comprehensive risk-based soil standards, and in 1992...about 100 contaminants in soils (3). The methods used to derive the proposed soil standards were generally...of the contaminants in soils, even under circumstances...children may have extensive ... |
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Soil solution chemistry of contrasting soils amended with heavy...
...and their toxicity to the soil biota. Three contrasting soils were amended with Cd(II...in the literature on the soil solution chemistry of soils amended with significant...Materials and methods Soils Three soil types with ... |
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Soil organic carbon and physical quality as influenced by long-term application...
...management, and minimal soil disturbance increase...production potential of soils is closely related to...residue will improve soil quality and, consequently...quality of agricultural soils refers primarily to the soil's strength and water... |
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Soil development on a l,500-year-old beach ridge plain, Sturgeon Bay, NW Lower...
...relatively well-preserved soils are found, natural soil development remains inherently...by examining samples from soils with similar soil formation conditions, except...chronosequence studies of natural soil formation in sandy ... |
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Soil's carbon storage capacity investigated.
...there is an upper limit to the equilibrium soil C level of mineral soils even when soil C input is increased. In this experiment...change in C sink capacity and fertility of soils when soil C input increases under higher plant production... |
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Soil carbon content after 55 years of management of a Vertisol in central Texas.
...because the decline in soil organic carbon stored in soils with intensive agricultural...of the Houston Black soil series. These soils contain large amounts of...about 56 percent) in the soil profile. In 1949, soils samples ... |
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Soil amendment user's guide.(FIELD SCIENCE)
...learn how to evaluate soil fairly effectively just...own senses. Remember, soils can change, so it is...years) re-evaluate your soil. Soil evaluation techniques...up about 2.5% of the soil mass in agricultural soils. You can ... |
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