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    Question

    The effective soil volume of measurement through neutron

    probe, is known as
    A Depth of soil water content Correct Answer Incorrect Answer
    B Representative volume of soil Correct Answer Incorrect Answer
    C Sphere of measurement Correct Answer Incorrect Answer
    D Sphere of influence Correct Answer Incorrect Answer

    Solution

    The "sphere of influence" refers to the volume of soil around the neutron probe measurement point that contributes to the measurement. In the context of neutron probe measurements, it represents the effective soil volume where the neutron interaction takes place, influencing the accuracy of the measurement of soil water content.

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