Neco Model Questions Vol1 2022 Agricultural Science Question 38
Practice objective / multiple choice question 38 from the 2022 Neco Model Questions Vol1 Agricultural Science examination.
A maize field has a plant density of 60 000 plants ha\(^{-1}\). Each earworm larva feeding on a plant causes a loss of 0.02 kg of grain. The market price of maize is ₦150 kg\(^{-1}\). An insecticide application costs ₦18 000 ha\(^{-1}\) and is 90 % effective in reducing the larval population. Determine the economic threshold, i.e., the number of larvae per plant above which it becomes profitable to spray. Give your answer rounded to two decimal places.
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About This Question
This is Neco Model Questions Vol1 2022 Agricultural Science Question 38. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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