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    Question

    The Bordeaux mixture was first used for the control of

    _____
    A Powdery mildew of pea Correct Answer Incorrect Answer
    B Downey mildew of grapes Correct Answer Incorrect Answer
    C Early blight of potato Correct Answer Incorrect Answer
    D Phomopsis blight Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    The Bordeaux mixture fungicide (copper sulfate and lime), discovered accidentally in 1882, was used successfully against downy mildew of grapes.

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