Spatial variability of soil fertility in Ramagarh village in Purna Valley of Vidarbha

Abstract

An investigation was conducted at Ramagarh village in Daryapur tehsil of Amravati District to quantify the spatial variability of available macronutrients (N, P, K and S) and micronutrients (Fe, Mn, Cu and Zn) through semivariogram analysis and prepare kriged maps through ordinary kriging. In case of available N, P, K and S it was varied from 115.4 to 245.23, 21.06 to 63.17, 470.85 to 870.13 and 8.99 to 16.1 kg ha-1 with a mean value of 185.29, 30.44, 656.17 and 11.93 kg ha-1, respectively. Among the three different theoretical model tested, the spherical model was found best fit for all the fertility parameters studied like available N, P, K, S, Fe and Zn whereas Gaussian model was found fit for Mn and Exponential model was fitted for Zn.