M.K. SINGH, U.N. VERMA, S.K. PAL, and R. THAKUR. 2001. “Efficacy of Slow Release Nitrogen-Fertilizers to Rice (Oryza Sativa) and Their Residual Effect on Wheat (Triticum Aestivum)”. Indian Journal of Agronomy 44 (1): 44_1 . https://doi.org/10.59797/ija.v44i1.3472.