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    Question

    Which of the following statement is

    incorrect?
    A When a field is ploughed, soil porosity is increased. Correct Answer Incorrect Answer
    B Tillage operations increase the B.D. of the soil Correct Answer Incorrect Answer
    C Tillage increases oxidation and decomposition of OM Correct Answer Incorrect Answer
    D Tillage decreases of thermal conductivity and heat capacity. Correct Answer Incorrect Answer
    E All are correct Correct Answer Incorrect Answer

    Solution

    When the soil is loosened due to ploughing,  the soil volume increase without any effect on weight. This decreases the bulk density of the soil.

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