MOHAMMED, Hisham  M. et al.
 Determination of crop coefficients, water requirements and water productivity for maize (Zea mays L.) under central Gezira clay soil conditions, Sudan.
<strong>Gezira Journal of Agricultural Science</strong>, [S.l.], v. 14, n. 2, mar. 2016.
ISSN 1728-9556. Available at: &lt;<a href="http://journals.uofg.edu.sd/index.php/gjas/article/view/123" target="_new">http://journals.uofg.edu.sd/index.php/gjas/article/view/123</a>&gt;. Date accessed: 21 july 2026.