Distribution of N, P and K in Soan River Valley Soils of Lower Shiwaliks

The vertical distribution of different forms of N, P and K did not follow any definite trend. The relationship of soil properties with forms of N, P and K indicated positive influence of pH on total N and organic carbon and silt on available N. The total P bore significantly positive relationship with pH, organic carbon, cation exchange capacity, silt and clay. The organic carbon and clay contents had positive influence on water soluble P as well. Total K was positively correlated with organic carbon, CEC and silt and water soluble K with sand and silt.