What does pH stand for in soil science?

pH in soil science stands for "Potential hydrogen." The term reflects the concentration of hydrogen ions (H⁺) in a solution, which directly influences the acidity or alkalinity of the soil. A lower pH indicates a higher concentration of hydrogen ions, meaning the soil is more acidic, while a higher pH indicates a lower concentration of those ions, meaning the soil is more alkaline.

Understanding soil pH is crucial for gardening and agriculture, as it affects plant nutrient availability, microbial activity, and overall soil health. The concept of "potential" in this context refers not only to the presence of hydrogen ions but also to their capacity to influence various chemical and biological processes in the soil.