Swellable fertilizer granules containing elemental sulfur with increased oxidation rates

Abstract

Fertilizer granules containing elemental sulfur (102, 202) and a hydrogel (104, 204) which expands or swells in the soil to more readily disperse the elemental sulfur surface throughout the soil, which increases the elemental sulfur surface area available for oxidation, and ultimately uptake of sulfur by the plant. The elemental sulfur and hydrogel can be added to a fertilizer composition as either an exterior coating or co-granulated with the base fertilizer composition. Figure 1 Figure 1