Why Gypsum Works in Your Soils: Part 4. Gypsum offsets ...
Why Gypsum Works in Your Soils: Part 4. Gypsum offsets high magnesium in soils. This calcium will displace magnesium on the soil particle increasing calcium base saturation. This will improve soil physical properties. As the magnesium is displaced, it will react with the sulfate ion and will leach deeper into the profile or be removed with drainage water.