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    Question

    Which content in potassic fertilizers required for

    grade?
    A K Correct Answer Incorrect Answer
    B K₂O Correct Answer Incorrect Answer
    C K₂O₅ Correct Answer Incorrect Answer
    D All of these Correct Answer Incorrect Answer

    Solution

    Potassic fertilizers, also known as potassium fertilizers, are typically graded based  on their potassium content, which is measured as K₂O or potash.

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