Sulphur is not only one of the most important minor plant nutrients, it will also lower soil pH and supply iron, cobalt, and molybdenum. Slow release, slow acting. Pelleted; looks like small split peas and spreads easily. Use 5-10 lbs per 1000 sq ft. For large acreages: contact us for application rates and ton prices. (To raise pH, Dolomite Lime is commonly available at most garden and feed stores.)