Waec Model Questions Vol1 2020 Agricultural Science Question 22
Practice objective / multiple choice question 22 from the 2020 Waec Model Questions Vol1 Agricultural Science examination.
A crop pest causes damage during its larval stage (12 days) and adult stage (8 days). The pest's life cycle repeats every 20 days, so a new damaging generation starts every 20 days. The first damaging larvae appear on day 5 after planting. An insecticide kills both larvae and adults and remains effective for 14 days after each application. For a 60‑day cropping period, what is the minimum number of insecticide applications required to protect the crop throughout?
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About This Question
This is Waec Model Questions Vol1 2020 Agricultural Science Question 22. It is one of the objective questions from the 2020 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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