Assessment of distribution of different forms of potassium in soil
Potassium is essential for various metabolic activities of living cell, transformation of carbohydrates, reduction of nitrates, synthesis of protein and normal meristematic activities where it acts as a catalyst or as a co- factor in enzymatic reaction of living cells. In the present study, the various soil samples were studied. The amount of water soluble, exchangeable, available, non-exchangeable, lattice and total-K in soil samples; ranged from 0.008 - 0.051, 0.251 - 0.975, 0.266 - 1.012, 0.625 - 2.987, 21.818 - 45.883 and 23.515 - 49.640 me/100g with the mean value of 0.019, 0.550, 0.569, 1.463, 32.522 and 34.574 me/100g respectively. Results of the study indicated that all the forms of potassium found higher in black soils compared to red soils. The water soluble and exchangeable K was higher in surface sample compared to sub surface in both the soil type. Whereas, non-exchangeable, lattice and total K was higher in sub surface than the surface in both the soil types.