Waec Model Questions Vol1 2023 Agricultural Science Question 7
Practice objective / multiple choice question 7 from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
In a cotton field there are 40,000 plants per hectare. Each aphid causes a 0.02% loss of the yield of the plant it attacks. The total cotton yield is 2,000 kg per hectare and the market price is ₦150 per kg. A pesticide application costs ₦12,000 per hectare and reduces the aphid population by 80%. What is the minimum number of aphids per plant at which applying the pesticide becomes economically justified?
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About This Question
This is Waec Model Questions Vol1 2023 Agricultural Science Question 7. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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