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    Question

    The sodium absorption rate (SAR) of water considered

    suitable for irrigation is?
    A 12 Correct Answer Incorrect Answer
    B <10 Correct Answer Incorrect Answer
    C 12-18 Correct Answer Incorrect Answer
    D <18 Correct Answer Incorrect Answer

    Solution

    SAR < 10 ┬аconsidered suitable for irrigation. Sodium-ion in small amounts is good for plants. But excess sodium ion creates the problem for both plant and soil. Excess sodium contributes to salinity and it is toxic for some sensitive crops.

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