Elsheikh, Mohammed Abdalla, and AbdelMoneim Mohammed Ahmed ElTilib. “Review on Potassium Research in Sudan: Past, Present and Future Prospects”. University of Khartoum Journal of Agricultural Sciences 26 (February 21, 2022). Accessed April 4, 2025. http://onlinejournals.uofk.edu/index.php/uofkjas/article/view/754.