Alobid, Mohannad; Alfaraj, Naji; Istvan, Szucs - 2020
the study show that for wheat, barley and cotton, there has been a decrease in the cultivated area during the crisis … note that there has been a negative impact of the crisis on wheat, barley, and cotton of 1,327.968, 84.139, 558.677 tons …, and cotton of 0.374, 0.134, 1.034 tons/ha, respectively …