In order to become available to plants, elemental sulfur (ES) first needs to oxidize in the soil, a process governed by several factors: size of granule, hardness of granule, soil temperature, soil moisture, soil biological activity. With the granular forms of ES in today’s market, such as ES-enriched phosphate products and, particularly, ES-bentonite pastilles, the amount of ES oxidized within the season of application is minimal, if any.