Allied & ICAR Exam Bank • ALLIED_0576 NAT • 2 Marks

Section 5: Irrigation and Drainage Engineering

Agricultural Drainage and Salinity

Subtopic: Agricultural Drainage and Salinity

Question Statement:

An irrigation water sample has cation concentrations: $\text{Na}^+ = 12\text{ meq/L}$, $\text{Ca}^{2+} = 5\text{ meq/L}$, $\text{Mg}^{2+} = 3\text{ meq/L}$. The Sodium Adsorption Ratio (SAR) is:

Answer Key:

6

Step-by-Step Solution & Explanation

$SAR = 12 / 2 = 6.0$.
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