Neco 2023 Agricultural Science Question 37
Practice objective / multiple choice question 37 from the 2023 Neco Agricultural Science examination.
A farmer follows a 3‑year rotation: Year 1 maize, Year 2 soybean, Year 3 fallow. Maize needs \(120\) kg N\,ha⁻¹. Soybean fixes \(40\) kg N\,ha⁻¹ and uses \(20\) kg N\,ha⁻¹ for its own growth. The soil initially contains \(50\) kg N\,ha⁻¹. Fertiliser N is applied only in the maize year at a rate of \(X\) kg\,ha⁻¹. After the three‑year cycle the soil must retain at least \(55\) kg N\,ha⁻¹. What is the minimum value of \(X\)?
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About This Question
This is Neco 2023 Agricultural Science Question 37. It is one of the objective questions from the 2023 Neco Agricultural Science examination.
Difficulty level: Medium .
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