Neco 2020 Agricultural Science Question 49
Practice objective / multiple choice question 49 from the 2020 Neco Agricultural Science examination.
A farmer has a \(12\) ha maize field infested with stem borer. The recommended pesticide is applied at a rate of \(1.2\) L per ha per spray. The label states the concentrate contains \(500\) g of active ingredient (a.i.) per litre and that the cumulative a.i. must not exceed \(900\) g per ha in a season. The farmer plans three sprays and will dilute the concentrate with water so that each spray uses exactly \(1.2\) L per ha. Determine (a) the maximum volume of concentrate (in litres) that can be used per ha for each spray without exceeding the seasonal a.i. limit, and (b) the total volume of water (excluding concentrate) required for the whole field over the three sprays.
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About This Question
This is Neco 2020 Agricultural Science Question 49. It is one of the objective questions from the 2020 Neco Agricultural Science examination.
Difficulty level: Medium .
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