An identified source of irrigation water has ion concentrations of Na+, Ca++ and Mg++ as 20, 10 and 22 milli equivalents per litre, respectively. The SAR of this water is approximately:
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Question Not Attempted
An identified source of irrigation water has ion concentrations of Na+, Ca++ and Mg++ as 20, 10 and 22 milli equivalents per litre, respectively. The SAR of this water is approximately: