Potassium Status in Some Entisols, Inceptisols and Alfisols of West Bengal

摘要

The distribution'of various forms of K and their relations with physical and chemical properties of thirty five surface (0-0.15 m) soils belonging to entisols, Inceptisols and Alfisols were investigated. The water soluble, exchangeable, available, non-exchangeable and lattice K ranged from 5.8-34.4, 50.3-256.1, 59.5-288.2, 322-2540 and 997-7820; 5.0-38.2, 58.5-324.5, 63.5-362.7, 382-1880 and 1229-5930; 5.1-17.4, 55.3-141.5, 68.5-155.0, i 312-1620 and 957-5180 mg kg-1 for Entisols, Inceptisols and Alfisols, respectively. Inceptisols followed by Entisols showed relatively higher values of all forms of soil K. Water soluble K had significant positive correlation with sand and EC and significant negative correlation with clay. Non-exchangeable and lattice K had highly significant negative correlation with sand and significant positive correlation with clay. Water soluble K showed high significant positive correlations with exchangeable K and significant negative correlations with non-exchangeable K andlattice K. There was strong significant positive correlation between non-exchangeable K with lattice K.