Neco 2022 Agricultural Science Question 8
Practice objective / multiple choice question 8 from the 2022 Neco Agricultural Science examination.
A maize field of 5 ha is being monitored for stem borer. The economic injury level (EIL) is given by \( \text{EIL} = \dfrac{C}{V \times D \times K} \) where \(C = ₦12{,}000\) per ha (cost of control), \(V = ₦30\) per kg (market value of maize), \(D = 0.02\) kg loss per insect, and \(K = 0.8\) (control efficacy). The farmer samples 200 plants and finds 3 insects per 10 plants. Assuming a planting density of 60 000 plants per ha, should control be applied? Answer "Yes" if the observed density exceeds the EIL (in insects per plant), otherwise answer "No".
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About This Question
This is Neco 2022 Agricultural Science Question 8. It is one of the objective questions from the 2022 Neco Agricultural Science examination.
Difficulty level: Medium .
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