|Measuring and Interpreting Soil pH | pH and Nutrients | Acidification Animation|
What is soil pH?
Soil pH is an indicator of the acidity or alkalinity of a soil.
Extremes in acidity or alkalinity may affect plant growth. Some plants can grow over a wide range of pH; others are sensitive to acidity, or alkalinity.
It is hard to overestimate the importance of pH in agricultural systems.
Soil pH is affected by soil chemistry and soil biology. Further, it is affected by the physical characteristics of the soil via the aeration of soil and soil water.
How does soil pH affect plant growth?
For most plants, the ideal soil pH is slightly acid or slightly alkaline.