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    Question

    A well-known practice to ensure adequate nitrogen of legumes in lieu of N-fertilizer is

    A rhizobium Correct Answer Incorrect Answer
    B azotobacter Correct Answer Incorrect Answer
    C azospirillum Correct Answer Incorrect Answer
    D None of the above Correct Answer Incorrect Answer

    Solution

    A well-known practice to ensure adequate nitrogen for legumes without the need for synthetic nitrogen fertilizers is the use of "rhizobium" bacteria.

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