Effect of different types of saline water on some chemical properties of gypsiferous soil

This study selected a soil with a high gypsum content of 590 g.kg-1. Different types ofwater were used: distilled water, river water and well water. The soil was leached by water atdifferent levels as far as (WHC) Water Holding Capacity. It was leached once and twice andthrice taking into consideration the amount of the field capacity. Then the cations weremeasure the rate of leaching speed. The rate of leaching of ions for distilled water is higherthan that of the river, which is higher than the well water.The effect of leaching was studied with different saline water types and their differentquantities In the leaching of saline gypsum Soil salinity was 11.6 ds.m-1after leaching withthe types of water, the salinity were 3.73, 4.95 and 9.01 ds.m-1 for distilled water, river waterand Well water respectively, As for the effect of amount of water was found the salainity7.83, 5.99 and 3.88 ds.m-1 when leaching in three W.H.C, two W.H.C and one W.H.Crespectively.Also we show the effect water quality and quantity on gypsum amount so we found that theamount of gypsum were 460, 503.3 and 533.3 g.kg-1for distilled water, river water and wellwater respectively. As for the effect the amount of gypsum were 523.3, 500.0 and 473.3 g.kg-1 for one W.H.C, two W.H.C and three W.H.C respectively. As for the speed of leachingthe ions it was found that the largest ions be magnesium, followed by calcium and sulfate,then bicarbonate, sodium and chloride, at 0.55, 0.50, 0.50, 0.52, 0.40 and 0.43) meq.l-1respectively This is due to the bonding of these ions to make salts of different solubility.