Lime and gypsum guides
Fixing sour (acidic) and sodic soils: lime rates, gypsum and what each one does.
Lime and gypsum guides
Lime and gypsum
Gypsum vs lime: which one does your soil need?
Lime fixes acidic soil. Gypsum treats sodic, dispersive soil and adds calcium and sulphur. How to tell which problem you have, with sourced rates.
Updated 24 October 2026
Lime and gypsum
How much lime per hectare? A guide for acid soils
How much lime per hectare depends on soil type, pH target, depth and lime quality. Sourced Australian figures for sands, loams and clays, plus maintenance.
Updated 24 October 2026