Status and Distribution of Different Forms of Potassium in Soils of Gwalior District (M.P.)

Abstract

The study was carried out during 2015-16 in Gwalior district (M.P.) having 120 GPS based surface soil samples (0-15 cm) collected from twenty three villages of four blocks (Dabra, Bhitarwar, Ghatigoan and Morar) of Gwalior district. The samples were prepared and analyzed for physico-chemical properties and different forms of potassium. The average shares of lattice potassium, non-exchangeable, exchangeable and water soluble potassium in the ‘total’ potassium were more than 90% (94.67%), 3.70%, 1.55% and 0.102% respectively. The results showed that the average values for water soluble-K, exchangeable-K, non-exchangeable-K, lattice-K and total K were: 15.1, 230.5, 548.4 mg /kg, 1.403% and 1.482%, respectively. Soils were neutral to slight alkaline with normal EC and CaCO3, having texture sandy clay loam to clay loam. The Correlation of different forms of potassium was positively correlated with OC, EC, and clay content. Similarly highly significant and positive relationship was observed between different forms of K.