Department of Soil Science, Chemistry and Biochemistry, University of AgriculturalSciences, Krishinagar, Dharwad, Karnataka, 580 005.
Distribution of total potassium in soil as well as in the different size fractions of the soil were studied in some Vertisols of northern Karnataka. The highest percentage of total soil potassium was in the clayfraction and this may be at tributed to the presence of K bearing minerals there in. On an average the percentage contribution of coarse sand,fine sand, silt and clay towards total soil potassium was 4.2, 9.8, 18.7, and 67.3, respectively, in different soil profiles. All the forms of potassium in soils were positively an a significantly correlated with K content, in silt and clay.
Forms of potassium, particle size fractions, Vertisols
