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    Question

    The most common indicator crop used to study the

    response of plants to sulfur deficiency is:
    A Sunflower Correct Answer Incorrect Answer
    B Rice Correct Answer Incorrect Answer
    C Sugarcane Correct Answer Incorrect Answer
    D Maize Correct Answer Incorrect Answer
    E Potato Correct Answer Incorrect Answer

    Solution

    Sunflower shows early and clear visual symptoms of sulfur deficiency, including yellowing of younger leaves. It is highly responsive to S fertilization and is widely used in nutrient experiments.

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