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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 ( burnt lime ), magnesium oxide , basic slag ( calcium silicate ), and ...

  3. Soil test - Wikipedia

    en.wikipedia.org/wiki/Soil_test

    In agriculture, a soil test commonly refers to the analysis of a soil sample to determine nutrient content, composition, and other characteristics such as the acidity or pH level. A soil test can determine fertility , or the expected growth potential of the soil which indicates nutrient deficiencies, potential toxicities from excessive ...

  4. pH - Wikipedia

    en.wikipedia.org/wiki/PH

    The pH range is commonly given as zero to 14, but a pH value can be less than 0 for very concentrated strong acids or greater than 14 for very concentrated strong bases. [2] The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. [3]

  5. Nutrient film technique - Wikipedia

    en.wikipedia.org/wiki/Nutrient_film_technique

    To prevent tipburn from taking place, provide crops with adequate air flow and circulation, decrease relative humidity, and decrease the temperature in your growing environment, and you may need to lower your DLI. For proper nutrient uptake, maintain a fertigation pH level of 5.4.-5.8 and an electrical conductivity level between 1.7 and 2.5.

  6. Plant nutrition - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrition

    Application rates should be limited to a few pounds per acre in a test plot to determine if boron is needed generally. Otherwise, testing for boron levels in plant material is required to determine remedies. Excess boron can be removed by irrigation and assisted by application of elemental sulfur to lower the pH and increase boron solubility.

  7. Soil fertility - Wikipedia

    en.wikipedia.org/wiki/Soil_fertility

    Soil pH in the range 5.5 to 7.0 (suitable for most plants but some prefer or tolerate more acid or alkaline conditions); Adequate concentrations of essential plant nutrients in plant-available forms; Presence of a range of microorganisms that support plant growth.

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  9. Potassium deficiency (plants) - Wikipedia

    en.wikipedia.org/wiki/Potassium_deficiency_(plants)

    The deficiency is most common in several important fruit and vegetable crops; notably potatoes, brassicas, tomatoes, apples, currants, gooseberries, and raspberries. Sugar beets, cereals, and clover are also commonly affected. Specific symptoms for each of these plants are as follows: [4] In potatoes, tuber size is much reduced and crop yield ...

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