K. H. Yousif, “Application Method of Potassium Humate on Growth And Yield of Green Onion (Allium Cepa L.)”, SJUOZ, vol. 2, no. 2, pp. 323–328, Dec. 2014, Accessed: Jan. 22, 2026. [Online]. Available: https://www.stest.uoz.edu.krd/index.php/sjuoz/article/view/250