The Role Of Gypsum In Agriculture 1. Source of calcium and sulfur for plant nutrition. 2. Improves acid soils and treats aluminum toxicity. 3. Improves soil structure. 4. Improves water infiltration. 5. Helps reduce runoff and erosion. we offer high qulaity gypsum fertilizer with calcium content not less than 20% and Sulphur content not less than 16% we offer different fineness like 250 mesh and 100 mesh or up to client request