Synthesis, Characterization and Application of Gypsum Slow Release Fertilizers

A substantial number of nutrients were lost and fertilizer usage was low when fertilizers were applied excessively, which significantly reduces crop output. The negative impacts of excessive fertilizer used in agricultural activities can be lessened by establishing improved fertilizer usage methods. We created Gypsum Slow Release Fertilizer (GSRF) for this investigation. A few of the primary ingredients utilized in the synthesis of the NPK delayed release fertilizer were urea, potassium sulfate (K₂SO₄), and single super phosphate (SSP) in order to meet the requirements for nitrogen (N), phosphorus (P), and potassium (K). In addition to those ingredients, gypsum was added to the fertilizer to improve its qualities. To find out how quickly N, P, and K were released cumulatively, column leaching studies were carried out.