T.C. SARMA. “ Effect of Nitrogen on Pulpable Biomass Yield of Roselle (Hibiscus Sabdariffa)”. 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/3486.