“Effect of potassium, trace elements and cultivar on some physiological traits and sugars at the khalal stage of fruits of date palm (phoenix dactylifera L.) grown in Thi-Qar governorate ” (2023) University of Thi-Qar Journal of agricultural research, 12(1), pp. 112–129. doi:10.54174/utjagr.v12i1.243.