Gce Model Questions Vol1 2023 Agricultural Science Question 31
Practice objective / multiple choice question 31 from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
A wheat field yields 3 t ha⁻¹ and the market price is $200 t⁻¹. An insect causes a 0.5 % yield loss for every 10 insects m⁻². The cost of applying an insecticide is $30 ha⁻¹ and it can prevent 90 % of the damage. Using the economic injury level formula \(EIL = \frac{C}{V \times I \times D}\), where \(C\) is control cost per hectare, \(V\) is crop value per tonne, \(I\) is injury per insect (tonne ha⁻¹ per insect) and \(D\) is the proportion of damage that can be prevented, calculate the pest density (insects m⁻²) at which control becomes economically justified.
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About This Question
This is Gce Model Questions Vol1 2023 Agricultural Science Question 31. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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