Roiss م.س., Dowlat خ.م. and Saleh م.ع. 2020. The effect of Nitrogen fertilization on yield of staple cotton cv. "Muallem 2000" (Gossypium barbadense L.). University of Aden Journal of Natural and Applied Sciences. 24, 2 (Oct. 2020), 319–327. DOI:https://doi.org/10.47372/uajnas.2020.n2.a02.