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WAEC Agricultural Science 1992 Question 29

Question 29

Crop Diseases

Which of the following plant diseases is not caused by fungus

  1. A.Black arm
  2. B.Rice blast
  3. C.Rice smut
  4. D.Cassava leaf-spot
  5. E.Maize rust.
Show the answer and explanation

Answer: A (Black arm)

Explanation

Black arm (bacterial blight of cotton) is bacterial; the others are fungal.