EFFECT OF THE INTRECATION BETWWEN SALINE IRRIGATION WATER AND DRIP IRRIGATION SYSTEM (SUB-SURFACE) ON CHEMICAL AND PHYSICAL PROPERTIES OF THE SOIL IN ABU GHARIB DISTRICT

Abstract

A field study was conducted in Soil Research Department (Ministry of Agriculture), located in Abu Ghraib district to study the effect of irrigation water salinity and drip irrigation system on soil properties according to using of drip irrigation system (under the surface) and through specific scenarios included the quality of water used (S): 1. Tap water (S0): (0.6 - 0.7 ds/m), 2. Medium-salinity water (S1): (2.6 – 3.0 ds/m), 3. High-salinity water (S2): (4.9 – 5.1 ds/m), and 4. The alternating irrigation method (S3): through using one irrigate of tap water followed by one irrigate of highly saline water. The results showed the increase of the chemical properties and the decrease of the physical properties of the soil when the irrigation by water salinity (S2, S3, and S1), also, the decrease of the chemical properties and increase of the physical properties of the soil when the irrigation by water salinity (S0), addition to, the increase of the chemical properties in the depths (0-10, and 30-45cm) when using drip irrigation system (sub-surface) more than the depths (10-20, and 20-30 cm) with the decrease of the physical properties in the depth (0-15) when using drip irrigation system (sub-surface) more than the depth (15-30 cm).