Gypsum vs. mined calcium sulfate anhydrite for sodium management

In the August 31, 2009 Super Journal report, "Gypsum vs. mined calcium sulfate anhydrite for sodium management" (263 KB pdf document), a study was conducted evaluate the ability of two calcium sulfate based products – gypsum (calcium sulfate dihydrate) and mined anhydrite (calcium sulfate anhydrite) to reduce soil sodium levels when applied to Poa annua greens prior to leaching. Key conclusions were:

- Leaching of both treated and non-treated greens resulted in significant reductions in soil salinity, sulfur, chloride, magnesium,…