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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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