Ayman Mahfouz Mohamed. “Impact of Fulvic Acid and Stimulant Substances on Growth and Productivity of Roselle (Hibiscus Sabdariffa L.) Plant”. The International Journal of Multiphysics 18, no. 4 (December 31, 2024): 1387 - 1407. Accessed April 1, 2026. https://themultiphysicsjournal.com/index.php/ijm/article/view/2161.