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  2. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    While both very low and very high pH values are detrimental to plant growth, there is an increasing trend of plant biodiversity along the range from extremely acidic (pH 3.5) to strongly alkaline (pH 9) soils, i.e. there are more calcicole than calcifuge species, at least in terrestrial environments.

  3. Alkali soil - Wikipedia

    en.wikipedia.org/wiki/Alkali_soil

    Soil moisture with pH < 4 is called very acid and with pH > 10 very alkaline (basic). H 2 CO 3 (carbonic acid) is unstable and produces H 2 O (water) and CO 2 (carbon dioxide gas, escaping into the atmosphere). This explains the remaining alkalinity (or rather basicity) in the form of soluble sodium hydroxide and the high pH or low pOH.

  4. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    In contrast, alkalosis is characterized by excessively high blood pH. Blood pH is usually slightly basic, with a pH of 7.365, referred to as physiological pH in biology and medicine. Plaque formation in teeth can create a local acidic environment that results in tooth decay through demineralization.

  5. Jeremy Rhoden: Why does soil pH matter to your garden? - AOL

    www.aol.com/weather/jeremy-rhoden-why-does-soil...

    Soil pH influences your plant’s ability to uptake nutrients from the soil. If the soil pH is too high, plants are not able to absorb many micronutrients, such as manganese and iron. When soil pH ...

  6. Topsoil - Wikipedia

    en.wikipedia.org/wiki/Topsoil

    Intensive farming methods to satisfy high food demands with high crop yields and growing crops in monocultures can deplete the soil nutrients and damage the soil microbiome. These factors can affect the consistency and quality of the soil resulting in increased erosion. Surface runoff from farm fields is a type of nonpoint source pollution.

  7. Jeremy Rhoden: Why does soil pH matter to your garden? - AOL

    www.aol.com/sports/jeremy-rhoden-why-does-soil...

    Regardless of what nutrients are available in the soil, if the pH is not correct, your plants cannot use them.

  8. Soil biology - Wikipedia

    en.wikipedia.org/wiki/Soil_biology

    Soil biology is the study of microbial and faunal activity and ecology in soil. Soil life , soil biota , soil fauna , or edaphon is a collective term that encompasses all organisms that spend a significant portion of their life cycle within a soil profile, or at the soil- litter interface.

  9. Soil salinity - Wikipedia

    en.wikipedia.org/wiki/Soil_salinity

    Salts dissolved from the soil accumulate at the soil surface and are deposited on the ground and at the base of the fence post. Saline incrustation in a PVC irrigation pipe from Brazil. Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization. [1] Salts occur naturally within soils and ...