Neco 2019 Agricultural Science Question 22
Practice objective / multiple choice question 22 from the 2019 Neco Agricultural Science examination.
Using the economic threshold formula \\(ET = \dfrac{C}{V \times L \times N \times E}\\), where \\(C\\) is the cost of control per hectare (₦), \\(V\\) is the market value per kilogram of crop (₦), \\(L\\) is the yield loss per pest per plant (kg), \\(N\\) is the number of plants per hectare, and \\(E\\) is the efficacy of the pesticide (as a fraction), determine the economic threshold (pests per plant) for a maize field where: control cost \\(C = 12{,}000\\) ₦ ha\\(^{-1}\\); market price \\(V = 150\\) ₦ kg\\(^{-1}\\); loss per pest per plant \\(L = 0.02\\) kg; plant density \\(N = 40{,}000\\) plants ha\\(^{-1}\\); and pesticide efficacy \\(E = 0.80\\).
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About This Question
This is Neco 2019 Agricultural Science Question 22. It is one of the objective questions from the 2019 Neco Agricultural Science examination.
Difficulty level: Medium .
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