Waec Model Questions Vol1 2021 Geography Question 25
Practice objective / multiple choice question 25 from the 2021 Waec Model Questions Vol1 Geography examination.
A farmer intends to cultivate maize on 5 ha. Expected yield is 4 t ha⁻¹. Maize removes 0.5 % of its grain weight as nitrogen. Soil analysis shows the top 15 cm of soil (bulk density 1.3 g cm⁻³) contains 15 kg N ha⁻¹ of plant‑available nitrogen. Urea fertilizer (46 % N) is applied with an efficiency of 80 %. How many kilograms of urea should be applied to meet the crop's nitrogen requirement?
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About This Question
This is Waec Model Questions Vol1 2021 Geography Question 25. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Geography examination.
Difficulty level: Hard .
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