USA soil taxonomy (1252 bytes)
1: ...entre]] provides an elaborate classification of [[soil types]] according to several parameters and in se...
3: == Example of classification of a soil type ==
28: * [[FAO soil classification]]
29: * [[International Committee on Anthropogenic Soils]] ([[ICOMANTH]])
30: * [[Soil classification]]

Soil pH (11521 bytes)
1: ...s an indication of the alkalinity or acidity of [[soil]]. It is based on the measurement of [[pH]], whic...
3: ...ther extreme of this range. Under many conditions soils tend to become more acid or alkaline over time i...
5: ...H can affect the availability of nutrients in the soil.
7: === Nutrient availability in relation to soil pH ===
9: ...of food crops prefer a neutral or slightly acidic soil, because the solubility of most nutrients necessa...

Soil (14788 bytes)
1: ''For the heavy metal band see [[Soil (band)]]
3: ... organic matter, [[water|moisture]], and [[air]]. Soils differ in the [[ratio]] of these components.
5: ==Modern soil concept==
7: ...mmon rooting depth of native perennial plants”'' (Soil Survey Staff, 1975).<br><br>
8: ...rting plants. It is, however, still a part of the soil if it is genetically related to the other parts a...

Soil structure (816 bytes)
1: ...arious systems have been developed to protect the soil's structure and to assist in restoring this inher...
3: See also: [[Masanobu Fukuoka]], [[soil]], [[no-till farming]]
6: ...le.html Let The Soil Work For Us]: Improvement of soil quality by assisting the development of its natur...
9: [[Category:Soil science]]

Night soil (1990 bytes)
1: '''Night soil''' is a term most often used to describe the prac...
7: ...tcaste)|untouchable]]s with the disposal of night soil. This "manual scavenging" is now illegal in most ...

Soil type (1167 bytes)
3: ...nt nutrients. The ratio of these sizes determines soil type: clay, loam, clay-loam, silt-loam, and so on...
5: There are several recognized classifications of soil types.
9: *[[soil structure]]
10: *[[FAO soil classification]]
11: *[[Canadian system of soil classification]]

Soil science (18193 bytes)
1: ...operties in relation to the use and management of soils.
3: ...her knowledge of soils and the advancement of the soil sciences.
5: ...pecialists, professional soil scientists in the [[USA]] can seek professional registration and certific...
7: ==History of Soil Science==
9: ...f soils goes beyond the removal of nutrients from soil by harvested crops and their return in manure, li...

Soil salination (4010 bytes)
1: ...oils retrogression and degradation|degradation of soils]] and vegetation.
5: * high levels of salt in the soils;
9: [[Salt]] is a natural element of soils and water.
12: ...tion (enormous amounts of salts are stored in the soils).
14: However, human practices have increased soil salinity by changing the natural balance of the w...

Free Soil (546 bytes)
1: ...ation of the [[United States Free Soil Party|Free Soil Party]] in supporting the [[Wilmot Proviso]], and...

Soil amendments (401 bytes)
1: ...a class of materials which are used to adjust the soil for increased fertility.
2: ...can be [[mineral]], such as lime to "sweeten" the soil, to make it less acid ( or sour), [[fertilizers]]...
3: Sometimes a [[soil inoculant]] is added for [[legumes]].

Muck (soil) (1616 bytes)
1: '''Muck''' is a [[soil]] made up primarily of [[humus]] from drained [[s...
3: ...ncestors practiced a similar type of farming. The soils are deep, dark colored, and friable, often under...
5: ...nths. [[Oxidation]] also removes a portion of the soil each year, so they become progressively shallower...
9: ...legrowersnews.com/pages/issue_03_08/03_08_zellers_soil.html

Soil classification (630 bytes)
1: ... as criteria that dictate choices in land use and soil management.
5: * [[FAO soil classification]]
6: * [[International Committee on Anthropogenic Soils]] ([[ICOMANTH]])
7: * [[USA soil taxonomy]]
10: ...Soil Survey Information - Soil Classification for Soil Survey by D. G. Rossiter]

Fertile soil (858 bytes)
1: ... term is used to describe agricultural and garden soil.
3: Fertile soil has the following properties:
6: *It contains organic matter, that improves [[soil structure]] and water retention.
8: *Good structure, creating well drained soil.
12: .../casfs/gardenideas/soilfert.html Building Fertile Soil]

Intrazonal Soil (130 bytes)
1: A soil that shows [[zones]], but zones that are reflecti...

Soil mechanics (770 bytes)
1: ...ch to soil engineering, is known as the Father of Soil Mechanics.
3: ...il from [[excavation]]s and underground openings. Soil is encountered in a number of special problems.
7: * Terzaghi, K., [[1943]], Theoretical Soil Mechanics, John Wiley and Sons, New York

Derelict soil (280 bytes)
1: ...t may usually be brought back to use only after [[soil remediation]].
5: [[Category:Soil science]]

The Living Soil (3495 bytes)
1: '''''The Living Soil''''' (1943) by [[Lady Eve Balfour]] is considered...
3: ... Living Soil'' was also published as ''The Living Soil and the Haughley Experiment''.
5: ...e online in the Agriculture Library at http://www.soilandhealth.org.
9: ...l - evidence of the importance to human health of soil vitality, with special reference to national plan...
11: :;I. PRELIMINARY SURVEY:Soil erosion. Nature of soil. Law of Return. The case outlined.

Soil life (9823 bytes)
1: ...ve term for all the organisms living within the [[soil]].
4: ...isms, dead matter would accumulate and litter the soil surface, and there would be no food for plants.
6: The soil biota includes:
11: ...and fungi play key roles in maintaining a healthy soil.
15: ...anisms, and are the most numerous denizens of the soil, with populations ranging from 100 million to 3 b...

Soil test (1227 bytes)
1: ...culture]], a '''soil test''' is the analysis of a soil sample to determine nutrient content, composition...
3: ...]] (P), and [[potassium]] (K) - and for [[soil pH|soil acidity]] (pH). Lab tests are more accurate, thou...
5: ...r, so sample timing may also be important. Mixing soil from several locations to create an "average" sam...
8: [[soil]], [[fertilizer]]
10: [[Category:Soil science]]

Soil (band) (990 bytes)
1: '''SOiL''' is a five-piece [[Heavy metal music|heavy meta...
23: * [http://www.soil-music.com/ Offical site]

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