Ground water samples from existing wells in different agricultural farms of Malir Valley Karachi (Pakistan) were collected and analyzed for chemical constituents viz. Na, K, Ca, Mg, CO3, HCO3, C1 and SO4 along with -their physical properties. The values of total dissolved salts (TDSL odium adsorption ratio (SAR), resident sodium carbonate (RSC) and exchangeable sodium percentage (ESP) of the samples were then calculated to investigate their Irrigation chemistry. Inspire of high values of TDS, 70,90 and 100% samples were found to be safe with respect to their SAR, ESP & RSC values respectively. Sodium percent (Na%) of 30% samples was found to be good where 50% were in permissible range from irrigation point of view. The overall results show that the underground water of Malir Valley can suitably be med for irrigation purpose.
M I QAIMNKHANI ,
You can use below filter to find your desired issue