Neco 2018 Agricultural Science Question 30
Practice objective / multiple choice question 30 from the 2018 Neco Agricultural Science examination.
A farmer has three fields, each 5\,ha. He wants to rotate maize, soybean and wheat over a three‑year cycle. The nitrogen (N) requirements are: maize 120\,kg ha\(^{-1}\), wheat 80\,kg ha\(^{-1}\), and soybean fixes 50\,kg ha\(^{-1}\) of N. The initial soil N content is 60\,kg ha\(^{-1}\). Synthetic N fertilizer costs \(\text{₦}200\) per kg. Assuming the N fixed by soybean becomes fully available to the same field in the following year and that there are no N losses, determine the total amount of synthetic N fertilizer (in kg) the farmer must apply over the three‑year rotation to meet the crop N requirements.
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About This Question
This is Neco 2018 Agricultural Science Question 30. It is one of the objective questions from the 2018 Neco Agricultural Science examination.
Difficulty level: Medium .
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