Neco Model Questions Vol1 2020 Agricultural Science Question 30
Practice objective / multiple choice question 30 from the 2020 Neco Model Questions Vol1 Agricultural Science examination.
A stem‑borer pest population in a maize field doubles every week. The economic injury threshold is \(1\,000\) insects per hectare. At the start of the season the population is \(200\) insects per hectare. An insecticide applied once per week kills \(70\%\) of the insects present at the time of application. The farmer wants to apply the insecticide as few times as possible while ensuring that the population never exceeds the threshold. How many insecticide applications are required during the season?
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About This Question
This is Neco Model Questions Vol1 2020 Agricultural Science Question 30. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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