List of top Irrigation and Drainage Engineering Questions on Irrigation and drainage water quality

Given: Mg\(^{2+}\)=5.68 meq/L, Na\(^{+}\)=9.90 meq/L, HCO\(_3^{-}\)=11.20 meq/L. \[ \frac{\text{HCO}_3^-}{\text{Ca}^{2+}}=2.8 \] Find Sodium Adsorption Ratio (SAR).