Question

What does soil pH primarily measure in terms of soil acidity?

Q: Answer-What does soil pH primarily measure in terms of soil acidity?

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 acidityThe portion of soil acidity held on cation exchange sites and reversible through soil treatments.