Agricultural Engineering > GATE 2021 > Soil Salinity
The observed concentrations of magnesium (Mg²⁺), sodium (Na⁺), and bicarbonate (HCO₃) in saturated extract of a soil sample taken from the root zone are 5.68 meq L⁻¹, 9.90 meq L⁻¹, and 11.20 meq L⁻¹, respectively. If the concentration ratio of HCO₃/Ca²⁺ is 2.8, the sodium adsorption ratio is [round off to 2 decimal places]
Correct : 4.50
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