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  2. Calcareous grassland - Wikipedia

    en.wikipedia.org/wiki/Calcareous_grassland

    Plants on calcareous grassland are typically short and hardy, and include grasses and herbs such as clover. Calcareous grassland is an important habitat for insects, particularly butterflies and ants, [ 2 ] and is kept at a plagioclimax by grazing animals , usually sheep and sometimes cattle.

  3. Calcareous - Wikipedia

    en.wikipedia.org/wiki/Calcareous

    These oozes form slowly under low-energy environments, and necessitate higher seawater saturation states or a deeper CCD (see supersaturation and precipitation vs. undersaturation and dissolution). Therefore, in shallow CCD conditions ( i.e. , undersaturation of calcium carbonate at depth), stable, non-calcareous sediments such as siliceous ...

  4. Caliche - Wikipedia

    en.wikipedia.org/wiki/Caliche

    Caliche fossil forest on San Miguel Island, California. Caliche (/ k ə ˈ l iː tʃ iː /) (unrelated to the street-slang "Caliche" spoken in El Salvador) is a soil accumulation of soluble calcium carbonate at depth, where it precipitates and binds other materials—such as gravel, sand, clay, and silt.

  5. Soil formation - Wikipedia

    en.wikipedia.org/wiki/Soil_formation

    Additionally, some bacteria can fix atmospheric nitrogen, and some fungi are efficient at extracting deep soil phosphorus and increasing soil carbon levels in the form of glomalin. [69] Plants hold soil against erosion, and accumulated plant material build soil humus levels. Plant root exudation supports microbial activity.

  6. Rendzina - Wikipedia

    en.wikipedia.org/wiki/Rendzina

    Rendzina (or rendsina) is a soil type recognized in various soil classification systems, including those of Britain [1] and Germany [2] as well as some obsolete systems. They are humus-rich shallow soils that are usually formed from carbonate- or occasionally sulfate-rich parent material. [2] Rendzina soils are often found in karst and ...

  7. Ultisol - Wikipedia

    en.wikipedia.org/wiki/Ultisol

    Ultisol, commonly known as red clay soil, is one of twelve soil orders in the United States Department of Agriculture soil taxonomy. The word "Ultisol" is derived from "ultimate", because Ultisols were seen as the ultimate product of continuous weathering of minerals in a humid, temperate climate without new soil formation via glaciation .

  8. Sapric - Wikipedia

    en.wikipedia.org/wiki/Sapric

    A sapric is a subtype of a histosol [1] where virtually all of the organic material has undergone sufficient decomposition to prevent the identification of plant parts and even fecal matter. [ 2 ] [ 3 ] Muck is a sapric soil that is naturally waterlogged or is artificially drained.

  9. Agricultural lime - Wikipedia

    en.wikipedia.org/wiki/Agricultural_lime

    Some effects of agricultural lime on soil are: it increases the pH of acidic soil, reducing soil acidity and increasing alkalinity [1] it provides a source of calcium for plants; it improves water penetration for acidic soils; it improves the uptake of major plant nutrients (nitrogen, phosphorus, and potassium) of plants growing on acid soils. [2]

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