How to use it
- Enter a pH value from 0 to 14.
- Classify the value.
- Read the broad category and reference note.
Soil pH Reference Tool
Place a pH value into a broad descriptive category without treatment recommendations.
About the Soil pH Reference Tool
Use a simple descriptive scale to understand where an entered pH value sits from acidic to alkaline.
Reference logic
Values below 5.5 are strongly acidic, 5.5 to below 6 acidic, 6 to below 6.5 slightly acidic, 6.5 through 7.5 neutral, and values above 7.5 alkaline.
Example
A pH value of 6.2 is placed in the slightly acidic reference category.
Notes
This tool does not diagnose soil or recommend amendments or chemical treatment. Interpretation varies by crop, sample quality and laboratory method.