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  2. Alkali soil - Wikipedia

    en.wikipedia.org/wiki/Alkali_soil

    Alkali, or alkaline, soils are clay soils with high pH (greater than 8.5), a poor soil structure and a low infiltration capacity. Often they have a hard calcareous layer at 0.5 to 1 metre depth. Alkali soils owe their unfavorable physico-chemical properties mainly to the dominating presence of sodium carbonate , which causes the soil to swell ...

  3. 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.

  4. Category:Types of soil - Wikipedia

    en.wikipedia.org/wiki/Category:Types_of_soil

    Alkaline soils (3 P) C. Clay (5 C, 26 P) P. Peat (3 C, 4 P) ... Pages in category "Types of soil" The following 151 pages are in this category, out of 151 total.

  5. Category:Alkaline soils - Wikipedia

    en.wikipedia.org/wiki/Category:Alkaline_soils

    Pages in category "Alkaline soils" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes. A. Alkali soil; Alvar; P.

  6. Alkaline soil - Wikipedia

    en.wikipedia.org/?title=Alkaline_soil&redirect=no

    This page was last edited on 28 March 2014, at 16:36 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may ...

  7. Calcareous grassland - Wikipedia

    en.wikipedia.org/wiki/Calcareous_grassland

    Calcareous grassland (or alkaline grassland) is an ecosystem associated with thin basic soil, such as that on chalk and limestone downland. [1] Plants on calcareous grassland are typically short and hardy , and include grasses and herbs such as clover .

  8. Red cabbage - Wikipedia

    en.wikipedia.org/wiki/Red_cabbage

    The juice of red cabbage can be used as a homemade pH indicator, turning red in acid and green/yellow in basic solutions. When cooking, red cabbage will normally turn blue; adding vinegar or acidic fruit to the pot is necessary to retain the cabbage's red colour. [4] Red cabbage needs well-fertilized soil and sufficient humidity to grow.

  9. Soil texture - Wikipedia

    en.wikipedia.org/wiki/Soil_texture

    Soil texture is a classification instrument used both in the field and laboratory to determine soil classes based on their physical texture. Soil texture can be determined using qualitative methods such as texture by feel, and quantitative methods such as the hydrometer method based on Stokes' law .

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