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    Question

    Blue green algae can add up to what quantity of Nitrogen

    per hectare to a rice field?
    A 5 to 10 kg N/ha Correct Answer Incorrect Answer
    B 10 to 15 kg N/ha Correct Answer Incorrect Answer
    C 30 to 35 kg N/ha Correct Answer Incorrect Answer
    D 20 to 25 kg N/ha Correct Answer Incorrect Answer

    Solution

    Blue green algae can add up to 20-25 kg Nitrogen per hectare to a rice field. 

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