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WAEC Agricultural Science 2008 Question 36

Question 36

Crop Pests

Which of the following pesticides effectively control maize stem borers?

  1. A.Systemic insecticides
  2. B.Contact poisons
  3. C.Nematicides
  4. D.Fumigants.
Show the answer and explanation

Answer: A (Systemic insecticides)

Explanation

Borers hide inside stems; systemic insecticides move into the plant and reach them.