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WAEC Agricultural Science 1991 (August) Question 30

Question 30

Crop Diseases

The bacterial blight of cotton is also known as

  1. A.black arm
  2. B.leaf spot
  3. C.damping off
  4. D.twister
  5. E.leaf rust.
Show the answer and explanation

Answer: A (black arm)

Explanation

Bacterial blight of cotton causes black lesions on stems and branches, called black arm.