STUDYING THE CHEMICAL, MORPHOLOGICAL AND PHYSICAL PROPERTIES OF THE MIDDLE EUPHRATES GYPSUM SOIL

Abstract

Four bedonat have been chosen which are distributed in four differentprovinces Babylon, Kerbala, Najaf, and Al-diwania. Considering that one pedonfor each region is selected from gypsum soil to study the chemical properties.These properties can be concluded by gypsum percentage which is in range of 12- 70 %, electrical conductivity at saturation state with 2.5 - 12.5 dc/m , and pHwith range of 7.5 - 8.2. in addition, CaCO3 percentage has been measured whichillustrates that gupsum percent in inverse relationship with CaCO3 percent inrage of 7.3 - 20%. Moreover, virtual density studied as a physical property toshow that density decreases as the gypsum increases which effects both realdensity and the porosityThe morphological description studied parent material ,gradientdegreeand level of ground water and other characteristics. All of thebedon were classified as Aridisols and under Gypsids and within theHaplogicids, all under the great group Leptic Haplogicids except Babylon. Theoriginal material in all study sites was calcareous gypsum and the parentmaterial was gypsiferous and Calcareous material.