“…The decrease in ESP of post harvest soil due to the replacement of Na + by Ca 2+ during decomposition of spent wash must have led to the reduction in soil ESP. The findings are in close agreement of those reported by Kumar et al, (2017). Those it can be concluded that the increasing the growth and yield of paddy as well as in the amelioration of black alkali soil more uptake of N, P, K, Ca and Mg and decrease in Na uptake conforms the amelioration of soil.…”