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WAEC Agricultural Science 2015 Question 27

Question 27

Crop Diseases

Viral diseases of crops can best be controlled through

  1. A.vector control.
  2. B.planting resistant varieties.
  3. C.spraying insecticides.
  4. D.sterilizing farm equipment.
Show the answer and explanation

Answer: B (planting resistant varieties.)

Explanation

Viruses cannot be killed by chemicals, so resistant varieties are the surest control.