BABU S, RANA DS, PRASAD D, PAL S. Effect of sunflower stover and nutrients management on productivity, nutrient economy and phosphorus use efficiencies of pigeonpea (Cajanus cajan)-sunflower (Helianthus annuus) cropping system. Indian J Agri Sci. 2013;83(2). doi:10.56093/ijas.v83i2.27993