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  2. File:World Soil pH.svg - Wikipedia

    en.wikipedia.org/wiki/File:World_Soil_pH.svg

    English: I retrieved the soil pH maps from . In GIMP 2.4.3 I used the "Select by Color Tool" (threshold 15.0) to create pH-specific maps. Note that the original maps do not indicate actual pH values in the pH scale. For soils with acidic pH, I included the colors indicated by the leftmost 14 bars in the pH scale, ranging from red to pink.

  3. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    The soil pH usually increases when the total alkalinity increases, but the balance of the added cations also has a marked effect on the soil pH. For example, increasing the amount of sodium in an alkaline soil tends to induce dissolution of calcium carbonate , which increases the pH.

  4. File:Soil profile.svg - Wikipedia

    en.wikipedia.org/wiki/File:Soil_profile.svg

    depths out of the canvas (image should be generic) 21:39, 19 March 2021: 513 × 660 (544 KB) ... Soil pH; Soil physics; Soil production function; Soil quality; Soil ...

  5. File:Soil-pH.svg - Wikipedia

    en.wikipedia.org/wiki/File:Soil-pH.svg

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us

  6. Bjerrum plot - Wikipedia

    en.wikipedia.org/wiki/Bjerrum_plot

    Example Bjerrum plot: Change in carbonate system of seawater from ocean acidification.. A Bjerrum plot (named after Niels Bjerrum), sometimes also known as a Sillén diagram (after Lars Gunnar Sillén), or a Hägg diagram (after Gunnar Hägg) [1] is a graph of the concentrations of the different species of a polyprotic acid in a solution, as a function of pH, [2] when the solution is at ...

  7. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. [3] Primary pH standard values are determined using a concentration cell with transference by measuring the potential difference between a hydrogen electrode and a standard electrode such as the silver chloride electrode .

  8. File:PH Scale.svg - Wikipedia

    en.wikipedia.org/wiki/File:PH_Scale.svg

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us

  9. Unified Soil Classification System - Wikipedia

    en.wikipedia.org/wiki/Unified_Soil...

    The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt):

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