Elkashif, M., 		Ahmed, H., & 		Ali, M.
(2018).
 Effects of nitrogen rate and cultivar on vegetative growth, yield and storability of onion (Allium cepa L.), River Nile State, Sudan.
<em>Gezira Journal Of Agricultural Science, 16</em>(1).
Retrieved from <a href="http://37.60.236.48/index.php/gjas/article/view/1092" target="_new">http://37.60.236.48/index.php/gjas/article/view/1092</a>