Brajendra, Satendra K Mangrauthia, R M Sundaram, ICAR-IIRR,Hyderabad, and A .K Vishwakarma ICAR-IISS,Bhopal and Sandeep Kondaji, krishitantra INTRODUCTION Rice production in India alone  consumes almost 40 % of entire fertilizer production. Even with the existing  practices the use efficiency of major fertilizer nutrients such as NPK barely exceeds >40% and in almost entire…