Gce Model Questions Vol1 2025 Agricultural Science Question 33
Practice objective / multiple choice question 33 from the 2025 Gce Model Questions Vol1 Agricultural Science examination.
A maize crop yields according to the linear nitrogen response equation \(Y = 2 + 0.02N\), where \(Y\) is the grain yield in t ha⁻¹ and \(N\) is the amount of nitrogen (kg ha⁻¹) that is actually available to the crop. A soil test shows 40 kg ha⁻¹ of plant‑available nitrogen. The farmer wishes to obtain a target yield of 5 t ha⁻¹ and knows that 30 % of applied nitrogen is lost by leaching (so \(N_{effective}=0.70\,N_{applied}\)). How many kilograms of nitrogen fertilizer should be applied per hectare? Give your answer rounded to the nearest whole kilogram.
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About This Question
This is Gce Model Questions Vol1 2025 Agricultural Science Question 33. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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