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Chernozem (from Russian: чернозём, romanized: chernozyom, IPA: [tɕɪrnɐˈzʲɵm]; "black ground"), also called black soil, regur soil or black cotton soil, is a black-colored soil containing a high percentage of humus (4% to 16%) and high percentages of phosphorus and ammonia compounds.
Black soils are mineral soils which have a black surface horizon, enriched with organic carbon that is at least 25 cm deep. Two categories of black soils (1st and 2nd categories) are recognized. The categories are distinguished to recognise the higher value, and thus greater need for protection, of some soils (Category 1), while still including ...
Black soil may refer to: Chernozem, fertile black soils found in eastern Europe, Russia, India and the Canadian prairies. Muck (soil), a soil made up primarily of humus from drained swampland. Vertisol, dark cracking soils with a high clay content found between 50° N and 45° S of the equator.
Terra preta (Portuguese pronunciation: [ˈtɛʁɐ ˈpɾetɐ], literally "black soil" in Portuguese) is a type of very dark, fertile anthropogenic soil found in the Amazon Basin. It is also known as "Amazonian dark earth" or "Indian black earth".
Chernozem, one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Chernozems (from the Russian words for “black earth”) are humus-rich grassland soils used extensively for growing cereals or for raising livestock. They are found in the middle.
May 12, 2022 · Black soils are characterized by a thick, dark-coloured soil horizon rich in organic matter. They are found in Russia (327 million hectares), Kazakhstan (108 M ha), China (50 M ha), Argentina (40 M ha), Mongolia (39 M ha), Ukraine (34 M ha), United States of America (31 M ha), Colombia (25 M ha), Canada (13 M ha), and Mexico (12 M ha).
Black soils. Among the in situ soils of India, the black soils found in the lava-covered areas are the most conspicuous. Those soils are often referred to as regur but are popularly known as “black cotton soils
