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2. Soil pH - Wikipedia

   en.wikipedia.org/wiki/Soil_pH

   Then, using the initial soil pH and the aluminium content, the amount of lime needed to raise the pH to a desired level can be calculated. [68] Amendments other than agricultural lime that can be used to increase the pH of soil include wood ash, industrial calcium oxide , magnesium oxide, basic slag (calcium silicate), and oyster shells.

3. Physical properties of soil - Wikipedia

   en.wikipedia.org/wiki/Physical_properties_of_soil

   For example, a sandy loam soil with 20% gravel would be called gravelly sandy loam. When the organic component of a soil is substantial, the soil is called organic soil rather than mineral soil. A soil is called organic if: Mineral fraction is 0% clay and organic matter is 20% or more

4. Soil test - Wikipedia

   en.wikipedia.org/wiki/Soil_test

   Labs, such as those at Iowa State and Colorado State University, recommend that a soil test contains 10-20 sample points for every 40 acres (160,000 m 2) of field. Tap water or chemicals can change the composition of the soil, and may need to be tested separately. As soil nutrients vary with depth and soil components change with time, the depth ...

5. Soil survey reveals surprising information on the severity of ...

   www.aol.com/news/soil-survey-reveals-surprising...

   These surveys are completed following a fire to determine the status of the affected watersheds and how long it may take for the native ecosystem to return to pre-fire conditions.

6. Acid neutralizing capacity - Wikipedia

   en.wikipedia.org/wiki/Acid_neutralizing_capacity

   Acid-neutralizing capacity or ANC in short is a measure for the overall buffering capacity against acidification of a solution, e.g. surface water or soil water.. ANC is defined as the difference between cations of strong bases and anions of strong acids (see below), or dynamically as the amount of acid needed to change the pH value from the sample's value to a chosen different value. [1]

7. Hydrophobic soil - Wikipedia

   en.wikipedia.org/wiki/Hydrophobic_soil

   Liming is a method to reduce soil water repellency in acidic soils. [3] The liming process consists of adding calcium carbonate, which increases the pH of the soil towards neutral. Separate from hydrophobic soils, increased calcium and pH are associated with increased infiltration from improved structure and [[aggregation in biologically active ...

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9. Soil science - Wikipedia

   en.wikipedia.org/wiki/Soil_science

   A soil scientist examining horizons within a soil profile. Soil science is the study of soil as a natural resource on the surface of the Earth including soil formation, classification and mapping; physical, chemical, biological, and fertility properties of soils; and these properties in relation to the use and management of soils. [1]