"A field experiment was conducted in Maysan in the winter season 2017-2018 on silt clay soil to determine the hydraulic standards for border drip irrigation system depending on the lateral pipes Spacing and measurement site within network in effect of soil conditioners and level water irrigation on the saline distribution horizontal and vertical distribution .the experimental treatment of three lateral pipes Spacing at 30 cm (S1) , 45 cm (S2) and 60 cm (S3) whit three soil conditioners organic material, used oil and control , the conditioners were added based on the dry weight of the soil , and two levels of irrigation water 75% and 100% from Ep . The treatments were applicated using RCBD , results showed that the decrease in the soil salt content due to the decrease in the distance between the field pipes , treatment S1 recorded the highest values (3.72 and 3.21) dsm-1 and it was significantly different from the two treatments S2 (4.04 and 3.55) dSM-1 and S3 (4.40 and 3). 88) dsm-1 , soil conditioners treatment of Oil was superior to the lowest values (3.33 and 2.82) dsm-1 , followed by the OM treatment (3.94 and 3.29) dsm-1 , with a significant difference compared to the comparison values (4.89 and4.53) dsm-1 , as well the results showed that the treatment of irrigation level exceeded 100% (3.92 and 3.32) dsm-1 with significant differences compared with the irrigation level of 75% (4.19 and 3.77) dsm-1 at the beginning and end of the growing season respectively. There was also a decrease in the saline content, both horizontally and vertically due to the decrease in the distance between the field pipes, the use of irrigation level 100%, and with the addition of conditioners.."
IMPROVING MOISTURE DISTRIBUTION PATTERN BY USING SOME SOIL CONDITIONERS IN LOAMY SAND SOIL UNDER DRIP IRRIGATION SYSTEM
