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  9. Q30
Question 30

Biological control of insect pests of crops can best be carried out through

  • A.crop rotation
  • B.use of parasites and predators
  • C.soil fumigation
  • D.farm sanitation
  • E.use of resistance varieties
Objective

Question details

Exam body
WAEC
Subject
Agricultural Science
Year
1996
Question no.
#30
Type
Objective
Previous · Q29Which of the following diseases of crops is not caused by a fungus? Next · Q31 The aims of crop improvement include the following except

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