Waec Model Questions Vol1 2017 Agricultural Science Question 20
Practice objective / multiple choice question 20 from the 2017 Waec Model Questions Vol1 Agricultural Science examination.
During scouting of a 3.5‑ha maize field, a farmer finds 12 stem‑borer larvae in a 20 m² quadrat. The economic threshold is 5 larvae per 10 m². The recommended pesticide is to be applied at a rate of 1.8 L per hectare for a 0.025 % (w/v) solution. If the farmer mixes the spray in a 200‑L tank, how many millilitres of pure concentrate must be added to achieve the recommended concentration?
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About This Question
This is Waec Model Questions Vol1 2017 Agricultural Science Question 20. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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