A large portion of the total potassium in soil occurs as structural component of soil minerals and is unavailable to plants. Plants can use only the exchangeable potassium occured on the surface of soil particles and the potassium dissolved in soil water. This often constitutes very small fraction of the total soil potassium. The dynamics of potassium in soil depends on the magnitude of equilibrium among various forms which have relationship with physico-chemical properties. Few studies have been conducted on status and distribution of different forms of potassium in the soils of Jammu region (Kaul and Gupta 2005), but no specific investigation was carried out to know about the vertical distribution of forms of potassium and their relationship withvarious soil physico-chemical properties particularly in the intermediate zone soils, which is one of the important agro-climatic zones covering a considerable area of Jammu region. It represents mid to high altitude regions of Jammu division covering around four districts. The altitude varies from 300 to 1000 meters above mean sea level. The region is characterized by cold winter with mean annual rainfall of 1100 to 1500 mm, and mean annual temperature of 13 °C. The soils are shallow to moderately deep.
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