Prof. Hassan Hamza Abbas Ramdan :: Publications:

This investigation represents a trial to more understanding of the interaction effect between both quality and quantity of irrigation water on soil and plant with the aim of providing important measures for assessing the suitability of different water i.e. well and drainage water for irrigation. A clay soil taken from Moshtohor village, Tukh, Qalubia governorate, was used in conducting a pot experiment. The irrigation treatment involved three salt concentrations namely, 500, 200 and 5000 ppm each of them included three SAR values namely, 1, 10 and 20. The pots were planted with sorghum as an indicator plant for a period of 60 days. Irrigation water was applied to soil and maintained at contents either corresponding to the field capacity (imperforated pots) or 1.8 fold the field capacity (in perforated pots) through daily application of waters. Data revealed that increasing salt concentration in the used water increased the electrical conductivity of the soils regardless to either SAR values. The increase was more announced in soils packed in the imperforated pots owing to the absence of leaching. Concerning the soil complex, the data revealed that the exchangeable bases were affected markedly upon applied saline irrigation water. The higher the SAR values of irrigation water was the more the release of Ca, Mg and K and the more entry of Na into the colloid. Increasing salt concentration in the applied water reduced the dry matter yield of sorghum plant and also their contents of K and Mg but on the other hand, increased the plants content of Na and Ca. the plants content of Na was decreased by increasing quality of water maintained by the soil from 1.0 to 1.3 fold the field capacity whereas plant content of P was not affected by salt concentrations, SAR value or quantity of the applied water.