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    Question

    A fertile soil must contain all the 3 major nutrients

    namely___________ for basic plant nutrition, in addition to 9 key micro nutrients.
    A Calcium, Nitrogen, Potassium Correct Answer Incorrect Answer
    B Nitrogen, Iron, Phosphorus Correct Answer Incorrect Answer
    C Nitrogen, Phosphorus, Potassium Correct Answer Incorrect Answer
    D Potassium, Calcium, Sulphur Correct Answer Incorrect Answer

    Solution

    The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK

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