Gce Model Questions Vol1 2018 Agricultural Science Question 31
Practice objective / multiple choice question 31 from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
A farmer grows maize and is considering whether to apply an insecticide against fall armyworm. Each larva can cause a loss of 0.12 kg of grain. The market price of maize is £1.20 per kilogram. The cost of applying the insecticide is £45 per hectare and its efficacy is 80 % (i.e., it kills 80 % of the larvae present). Using the economic threshold formula \(ET = \dfrac{C}{V \times K}\), where \(C\) is the control cost per hectare, \(V\) is the loss in value per larva, and \(K\) is the efficacy, calculate the maximum number of larvae per hectare at which control should be applied. Round your answer to the nearest whole larva.
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About This Question
This is Gce Model Questions Vol1 2018 Agricultural Science Question 31. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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