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  2. Chernozem - Wikipedia

    en.wikipedia.org/wiki/Chernozem

    Chernozem (/ ˈ tʃ ɜːr n ə z ɛ m / CHUR-nə-zem), [a] also called black soil, regur soil or black cotton soil, is a black-colored soil containing a high percentage of humus [3] (4% to 16%) and high percentages of phosphorus and ammonia compounds. [4] Chernozem is very fertile soil and can produce high agricultural yields with its high ...

  3. Terra preta - Wikipedia

    en.wikipedia.org/wiki/Terra_preta

    Terra preta (Portuguese pronunciation: [ˈtɛʁɐ ˈpɾetɐ], literally "black soil" in Portuguese), also known as Amazonian dark earth or Indian black earth, is a type of very dark, fertile anthropogenic soil found in the Amazon Basin.

  4. List of inventoried hardwoods in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_inventoried...

    The nuts are widely used in desserts and baking, and the wood is occasionally used in furniture and carpentry. Often grows on permeable, loamy soils. Uses: timber; landscaping, palatable food, veneers. [53] IL IN MD OH VA and the Southeast

  5. Soil color - Wikipedia

    en.wikipedia.org/wiki/Soil_color

    Dark soil color imparted by organic matter in Illinois, US. Dark brown or black colors typically indicate that the soil has a high organic matter content. [4] Organic matter coats mineral soil particles, which masks or darkens the natural mineral colors. [1] Sodium content also influences the depth of organic matter and therefore the soil color.

  6. Black soil - Wikipedia

    en.wikipedia.org/wiki/Black_soil

    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; Terra preta, "black earth" or soil of the Amazon river basin

  7. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    Soil bulk density, when determined at standardized moisture conditions, is an estimate of soil compaction. [60] Soil porosity consists of the void part of the soil volume and is occupied by gases or water. Soil consistency is the ability of soil materials to stick together. Soil temperature and colour are self-defining.