Question
What does soil pH primarily measure in terms of soil
acidity?Solution
Passive acidity: Soil acidity that is not immediately active but can become active over time. Active acidity: The concentration of hydrogen ions (H+) in the soil solution that is immediately available to affect plant growth. Total acidity: The sum of both active and exchangeable acidity in the soil. Exchangeable acidity:The portion of soil acidity held on cation exchange sites and reversible through soil treatments.
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