Effect of nitrogen fertilization and bulb spacing on saggai red onion seed production in Berber area, River Nile State, Sudan
By: al-Abasa, Sahar I.; Ali, Abd al-Azim M.; Muhammad, Usman E.…[et al.]. Sudan Journal of Agricultural Sciences. No. 3 (2015), pp.35-43, 9 p.
Subjects: Agriculture; Berbers; Fertilizers; Nitrogen fertilizers; Twenty-first century