Agricultural Gypsum (Calcium Sulfate – CaSO₄) is a versatile soil treatment that functions as an amendment, conditioner, and fertilizer. As a high-quality source of calcium and sulfur, it helps improve soil structure and fertility across a range of conditions. Ideal for heavy, waterlogged, or sodic soils, gypsum enhances the structure of clay-bound soils, promotes better drainage and root development, and supports long-term soil health and sustainability in both garden and field applications. The many advantages of using gypsum can be found HERE. TERRA ALBA - Powdered. SUGGESTED APPLICATION Use as directed by soil analysis. Use at lower rates (50-400 lb/acre) than non-soluble gypsum, but more frequently For foliar rates use 1-10 lb/acre Can be used for fertigation RESOURCES Data Sheet Heavy Metals Test