A. N, ALI, A.; 						E. MOHAMED, I.; 						A. BABIKER, E,.
 Effect of nitrogen and phosphorus on growth and yield of irrigated sunflower (Helianthus annuus L.)*.
<strong>Gezira Journal of Agricultural Science</strong>, [S.l.], v. 1, n. 2, p. 111-120, june 2021.
ISSN 1728-9556. Available at: &lt;<a href="http://37.60.236.48/index.php/gjas/article/view/1998" target="_new">http://37.60.236.48/index.php/gjas/article/view/1998</a>&gt;. Date accessed: 03 june 2026.