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  2. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    The pH is measured in soil-water (1:1) and soil-salt (1:2 ) solutions. For convenience, the pH is initially measured in water and then measured in CaCl 2 {\displaystyle {\ce {CaCl2}}} . With the addition of an equal volume of 0.02 M CaCl 2 {\displaystyle {\ce {CaCl2}}} to the soil suspension that was prepared for the water pH, the final soil ...

  3. Soil acidification - Wikipedia

    en.wikipedia.org/wiki/Soil_acidification

    Soil acidification is the buildup of hydrogen cations, which reduces the soil pH. Chemically, this happens when a proton donor gets added to the soil. The donor can be an acid, such as nitric acid, sulfuric acid, or carbonic acid. It can also be a compound such as aluminium sulfate, which reacts in the soil to release protons.

  4. Acid sulfate soil - Wikipedia

    en.wikipedia.org/wiki/Acid_sulfate_soil

    Sulfuric material refers to soil material that has a pH of less than 4 owing to the oxidation of sulfidic material. [ 27 ] Sulfidic material refers to “soil materials containing detectable inorganic sulfides (≥0.01% sulfidic sulfur) that can exist as horizons or layers at least 30 mm thick or as surficial features”, [ 27 ] and is further ...

  5. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    The cation exchange, that takes place between colloids and soil water, buffers (moderates) soil pH, alters soil structure, and purifies percolating water by adsorbing cations of all types, both useful and harmful. The negative or positive charges on colloid particles make them able to hold cations or anions, respectively, to their surfaces.

  6. Erythroxylum coca - Wikipedia

    en.wikipedia.org/wiki/Erythroxylum_coca

    Unlike Erythroxylum novogranatense, Erythroxylum coca requires very acidic soil conditions. Soil acidity and water acidity need to be below pH 5.5, with the optimal value being pH 3.5, similar to that of Rhododendron potting soils. At pH 6.5 and above, chlorosis and leaf distortion occur. [1]

  7. Talk:Soil pH - Wikipedia

    en.wikipedia.org/wiki/Talk:Soil_pH

    Soil pH is within the scope of WikiProject Soil, which collaborates on Soil and related articles on Wikipedia. If you would like to participate, ... 5 5.5 6 6.5 7 7.5 ...

  8. Biochar - Wikipedia

    en.wikipedia.org/wiki/Biochar

    Biochar can improve water quality, reduce soil emissions of greenhouse gases, reduce nutrient leaching, reduce soil acidity, [79] and reduce irrigation and fertilizer requirements. [ 80 ] [ 81 ] Due to its porosity, the small holes in biochar can keep water and dissolved minerals in the upper layers of soil, assisting plant growth and reducing ...

  9. Coir - Wikipedia

    en.wikipedia.org/wiki/Coir

    Mixed with sand, compost and fertilizer to make good quality potting soil. Coco peat generally has an acidity in the range of pH - 5.5 to 6.5, which is slightly too acidic for some plants, but many popular plants can tolerate this pH range. As substrate for growing mushrooms, which thrive on the cellulose.

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