Soil pH or soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH units. Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale ...

Soil pH, which reflects the acidity level in soil, significantly influences the availability of plant nutrients, microbial activity, and even the stability of soil aggregates. At low pH ...

"Maintaining a neutral pH level is optimal for microbial activity and nutrient absorption by plant roots. Soil with a very high or very low pH may result in nutrient deficiency or toxicity." ...