Department of Soil Science, CCS Haryana Agricultural University, Hisar-125 004, India.
An investigation to determine the quality of underground irrigation waters of Barwala Block of Hisar District in Haryana was undertaken. On the basis of EC, SAR and RSC values of the waters 54.2, 11.7, 13.3, 10.1, 5.3, 2.4 and 1.2% in saline, high SAR saline, marginally saline, good, high alkali, alkali and marginally alkali classes, respectively. The data also revealed that 66.9% waters had EC values above 4 dS/m and 22.1% had EC values above 10 dS/m.The waters are sodium-magnesium-calcium type dominated by chloride. Another interesting feature of these waters is the predominance of magnesium over calcium. Carbonate is either absent or is very little and the concentration of bicarbonates ions did not vary much in all the ranges.
