MOHAMED, Abdurrahman; 						MOHAMED, Ibrahim; 						DAFFALLA, Ahmed.
 Effect of nitrogen fertilization and cultivar on growth and grain yield of maize (Zea mays L.), Gezira State, Sudan.
<strong>Gezira Journal of Agricultural Science</strong>, [S.l.], v. 16, n. 1, june 2018.
ISSN 1728-9556. Available at: &lt;<a href="http://journals.uofg.edu.sd/index.php/gjas/article/view/1091" target="_new">http://journals.uofg.edu.sd/index.php/gjas/article/view/1091</a>&gt;. Date accessed: 25 june 2026.