Mohamed, M. A. ., and M. A. M. . Khair. “Effect of Cutting System and Time of Nitrogen Application on Forage Yield of Barley”. University of Khartoum Journal of Agricultural Sciences, vol. 18, no. 2, Dec. 2025, https://onlinejournals.uofk.edu/index.php/uofkjas/article/view/1963.