what is black soil?wher it is found and some other information about it?
461352
Chernozem, or Black Earth (from Russian: ), is a kind of soil. This black-coloured soil contains a very high percentage of humus — 3% to 15%, rich in phosphoric acids, phosphorus and ammonia. It has a large depth, often more than 40 inches, up to 250 inches (6 metres) in Ukraine. It is very fertile and does not require any fertilizing. Because of that it is often considered to be the best kind of soil. It is also found in Europe.
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Here are a few links:\n\nhttp://soilphysics.okstate.edu/S257/south/mlra/86.htm\n\nhttp://dallas.tamu.edu/weeds/\n\nhttp://www.blacklandprairiefestival.org/\n\nhttp://en.wikipedia.org/wiki/Blackland_Prairie\n\nhttp://www.worldwildlife.org/wildworld/profiles/terrestrial/na/na0814_full.html
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The Deccan Traps \n\nThe typical soil derived from the Deccan trap is the regur or black cotton soil. These soils vary in depth from shallow to deep. It is common in Maharashtra, western parts of Madhya Pradesh, parts of Andhra Pradesh, parts of Gujarat, and some parts of Tamil Nadu. Many black soil areas have a high degree of fertility. They are darker, deeper and richer and are constantly enriched by the additions washed down from the hills.
995583
The red color is found in many soils around the world.\nThe cause of that is the presence of oxides and hydroxides of Fe and Al.\nThose soils are known as ''weatherized'', usually done by many, many years of exposure to heat and humidity.
764128
The soil is very iron-rich. When iron oxidizes, it produces iron oxide which is basically rust and it red in color. :)\n\nAnd interesting side fact, the dawn and dusk sky is blue. (It's reddish on Earth :)
660157
Soil is the material on the surface of a lithosphere subject to weathering, and especially the earthy portion of that material.\n\nSoil components\n\n    * Composition -- A typical surface soil is half solids and half voids or porosity. Water and air are thus integral components of soils. Water occupies the void space between soil particles and is held by surface tension on particle surfaces. Air occupies the remaining void space. Both water and air components of soils are important to plant growth and other life in the soil profile of a particular ecosystem\n    * Soil texture -- refers to soil grain size, sand = 2 to 0.02 or 0.05 mm; silt = 0.02 or 0.05 to 0.002 mm; clay = <0.002 mm. Soil texture influences available water capacity and movement, fertility, and workability or "tilth". "Loam" is a name for one of various mixtures of these three particle sizes. The ratio of these particles determines soil texture classification.\n    * Soil structure -- the arrangement of soil particles into aggregates, which may have various shapes, sizes and degrees of development or expression. Soil structure influences aeration, water movement, erosion resistance, and root penetration.\n    * Slope -- the inclination of the ground surface. Slope influences runoff of rainfall, soil erosion, stability, and machinery operation.\n    * Soil color -- Soil color often indicates soil moisture status and is used for determining hydric soils. Often described using general terms, such as dark brown, yellowish brown, etc., soil colors are also described more technically by using Munsell soil color charts, which separate color into components of hue (relation to red, yellow and blue), value (lightness or darkness) and chroma (paleness or strength).\n    * Soil chemistry -- A complex subject within soil science; the most important subjects are:\n\n        Soil pH -- The acidity or alkalinity of soils, which affects plant growth and soil fertility.\n        Cation Exchange Capacity -- The soil's ability to retain and exchange positively charged ions, which include major plant nutrients.\n        Reduction and oxidation (Redox) reactions are also important.\n\n    * The soil profile -- A vertical cut that exposes soil layering or soil horizons. Horizons are formed by combined biological, chemical and physical alterations. A, B, and C symbols are used to describe the topsoil, subsoil and substratum, respectively.\n    * Permeability -- The ability of a soil to transmit water or air. Faster or greater permeability often occurs in sandy or gravelly soils due to large pore spaces. Slower permeability typically occurs in finer textured clay soils, or compacted soils with little structure.\n    * Drainage -- The rate in which water is removed from a soil. Drainage influences most uses of soils, whether for agriculture, silviculture or urban. Classes of soil drainage are those found in soil survey reports, such as well drained, moderately well drained, somewhat poorly drained, poorly drained, and very poorly drained. Soil color patterns (such as mottle patterns or redoximorphic features) often indicate soil drainage class. The most productive agricultural soils are typically well drained or moderately well drained, as are the soils easiest to develop for urban use. By contrast, hydric soils are poorly or very poorly drained. A soil's natural drainage rate can be significantly increased by subsurface "tile" drainage.\n    * Soil biology -- Soils serve as habitats for soil organisms varying in size from microorganisms to small animals. The character of soils is intricately tied to bioturbation and the biochemical functions performed by soil organisms. The soil is home to a large proportion of the world's genetic diversity, which changes by soil type: desert soils (like aridisols) generally have more complex soil biotic communities and genetic diversity than tropical soils (like oxisols).\n    * Soil smell -- earthy odor
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the most common salt that burns purple is salts with potassium. I'm not sure what gives a black flame test, but sugars such as glucose and surcrose definately "burns" black.
206070
This is a wild ass guess, but maybe where it's too cold for dying plants to decompose.  Instead of mature soil, you get peat.
61983
rich, dark, black gold,\ncrumbles in your hands\nleaves a soil smell in your hands\nfeels great\nbest to grow things in
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Most black powders are a mixture of charcoal, sulfur, and saltpeter (sodium nitrate).\n\nMixing proportions are somewhat variable.
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Good question: The actinomycetes are one (you got me on the others but I will check back).\n\nEdit: Well, the actinomycetes are in the Monera; you asked for fungi.  So did you mean the 5 most common fungi?:\nAnd by "important" do you want economically important deleterious fungi like Aspergillus and Fomes?\nGlomus is the only beneficial one I could find.\n\nThat bacteria are much more important for soil health, like Rhizobium, Digitaria, Gunnera, Anabaena and Aulosira.\n\nIf you have some good information on this, please share.  I have been looking for it.  Also, if you know any good books???
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I think it was found by Günther in 1864.\n\nCheck http://en.wikipedia.org/wiki/Black_seadevil#Species
1140250
It is dirt.... the formation, in the house.... types of soil: dirt and mud.... just kidding I just wanted to make you laugh
569160
by what i have heard its found in dirt. it could be something due to hygiene. They found in the study that the people using the bauch and lombe (moisture lock)were acquiring the fungus so these were being removed from stores.
265098
Soil is either topsoil or subsoil - both are horizontal.\n\nTopsoil is the 'living' soil that contains bacteria, nutrients etc and which enables plants to grow.  Usually about 600mm deep.\n\nSubsoil is the 'dead' soil that is deprived of nutrients etc.
967154
i have this some days and i was told it was planta facitis no idea what is it
964591
It's an iron oxide and it forms in an oxidising environment. Rich deposits may be the result of weathering, or precipitation out of oxygen-rich surface water or oxygen-rich water in hydrothermal veins.\n\nAs to why it is sometimes red and sometimes metallic-grey I'd say it is probably due to the size of the crystals. When it is ground up fine, it is always red. The smaller grains scatter red light.