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    Question

    In conservation tillage the percentage of crop residue

    that should remain in the soil at harvest of a crop is:
    A < 10 percent Correct Answer Incorrect Answer
    B >20 percent Correct Answer Incorrect Answer
    C 30 percent Correct Answer Incorrect Answer
    D . 3 percent Correct Answer Incorrect Answer

    Solution

    Conservation tillage has been defined as any tillage system that leaves at least 30% of residue on the soil surface.

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