Irrigation with saline-sodic water affects soil physical properties. Knowing the effect of the soil chemical properties on soil water retention and hydraulic conductivity at various depths will lead to better management practices for soils irrigated with recycled drainage water. Research in San Joaquin Valley (SJV), California, is addressing needs to reduce irrigation volumes and drainage. Fresh water demands have increased and saline irrigation water sources will be used to a greater extent. The objectives of this study are to determine the hydraulic conductivity and soil water characteristics of soils irrigated with recycled saline-sodic drainage water for the eventual use of these parameters in irrigation management models. This study will assistin development of these parameters. Soils from Red Rock Ranch, west side SJV, were collected from areas with fresh-water and recycled drainage water irrigation to determine saturated conductivity and water retention characteristics. Irrigation water salinity ranges (EC) are < 1 dS/m to - 13 dS/m. Soils textures- clay loams. Soil salinity (ECe) was <2.4 dS/m to >50 dS/m and SAR was 8.6 to 85.4. The saturated flow rates (Ks) ranged from 1.02 X 10~(-3) to 7.58 X 10~(-7) cm per second.
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