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Sulphur
Sulfur is one of the most important agricultural and industrial raw materials and is an pale yellow, odourless, tasteless and polyvalent non metal, 10th most abundant element and is obtained from sulphide and sulphate. Sulphur is naturally present in the environment and was mined for many years, however most of today’s elemental sulphur is produced as a by-product from oil refining and gas processing plants. Sulphur is a pale yellow, odourless, brittle solid, which is insoluble in water. Most of the sulfur that is produced is used in the manufacture of sulfuric acid (H2SO4) used in production of fertilizers nitrogen, potassium and sulphate fertilizers, lead-acid batteries, and mineral ore leaching to produce essentially Copper, Nickel and Zinc. Smaller amounts of sulfur are used to vulcanize natural rubbers, as an insecticide, in the manufacture of gun powder and as a dying agent.
Sulphur (S) is an essential plant nutrient. It contributes to increase crop yield by providing direct nutritive value, as well as indirect nutritive value by enhancing soil productivity and improving use efficiency of other key nutrients (nitrogen and phosphorus).