Abstract A laboratory experiment was carried out at the College of Agriculture, University Anbar, located 43°20‘09.7“E longitude, 33°25‘36.7“N latitude for period from 1/10/2021 to 1/10/2022, study effect date residues, organic acids, and wetting / drying cycles on some physical properties gypsiferous soil. The soil selected site Fallujah palm station that longitude 43º51'. 05. 36 E. 33º17'. 46...