Sulphur Status in Red and Lateritic Soils of Birbhum District of West Bengal

摘要

Four hundred red and lateritic surface soil samples belonging to the order Alfisols from ten blocks viz.Bolpur-Sriniketan,Dubrajpur,Illambazar,Khyrasole,Lavpur,Mohammad Bazar,Nanoor,Sainthia,Suri-I and Suri-ll of Birbhum district of West Bengal were collected and analysed for major soil characteristics to assess the sulphur status.Soils varied widely in their properties and the available S content.Results indicate that the intensity of S-deficiency in red and lateritic soils of different blocks of Birbhum district of West Bengal ranged from about 21 to 40% with an average of 28% as per critical level approach and 25 to 41% with an average of 31% as per sulphur availability index (SAI).Correlation studies revealed intimate association of organic carbon with SO_4-S and SAI.