Organic sulphur was the major fraction (89%) of total while carbon bonded form was so of the organic sulphur (79%). HI-reducible sulfur and ester sulphate sulphur appear to be the vital source of sulphur from the pool of organic sulphur. Correlation between organic carbon and forms of sulphur were significant indicating sulphur as the integral part of soil organic matter. Correlation studies between silt plus clay and the forms of sulphur indicate that appreciable quantity of sulphur was adsorbed on finer fraction of soils. Total and organic sulphur content were higher in surface soils which decreased along soil depth. The step down multiple regression equations revealed that organic carbon and electrolyte conductivity explain the maximum variation in different forms of soil sulphur.
Forms of sulphur, profile distribution, calcareous soil
