P RAMESH et al. 2013. Long-term effect of nutrients on castor (Ricinus communis L.) productivity, soil fertility, nutrient uptake and nutrient-use efficiency in rainfed Alfisols: LONG-TERM EFFECT OF NUTRIENTS ON CASTOR IN RAINFED ALFISOLS. Journal of Oilseeds Research. 30, 1 (Jul. 2013). DOI:https://doi.org/10.56739/jor.v30i1.142750.