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WAEC Agricultural Science 1988 Question 25

Question 25

Crop Diseases

The most effective method of controlling or preventing viral diseases in plants is by

  1. A.planting resistant varieties
  2. B.spraying crops regularly
  3. C.burning affected crops
  4. D.practising crop rotation
  5. E.treating seeds with chemicals.
Show the answer and explanation

Answer: A (planting resistant varieties)

Explanation

There is no chemical cure for plant viruses, so growing resistant varieties is the surest prevention.