How much sulfur (Tiger-90) is required to drop the soil pH?
**Note - These calculations only apply to non-calcareous (non-fizzy) soils with a current pH between 6.5 and 8.5.**
Current pH  
Current TCEC  
Target pH  
Area to amend
Depth to amend
Use this much sulfur (Tiger-90 -- 90% S) -->
Elemental Sulfur required in lbs/acre lbs/acre
This calculator is based on the values in these documents:
Lowering the Soil pH with Sulfur (Michigan State University Extension)
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