M.K. SINGH, U.N. VERMA, S.K. PAL, and R. THAKUR. “Efficacy of Slow Release Nitrogen-Fertilizers to Rice (Oryza Sativa) and Their Residual Effect on Wheat (Triticum Aestivum)”. Indian Journal of Agronomy 44, no. 1 (October 10, 2001): 44_1 . Accessed June 25, 2026. https://pub.isa-india.in/index.php/ija/article/view/3472.