Waec Model Questions Vol1 2019 Geography Question 8
Practice objective / multiple choice question 8 from the 2019 Waec Model Questions Vol1 Geography examination.
A farmer intends to cultivate maize on 5 ha. Soil tests show available nutrients: N = 30 kg/ha, P₂O₅ = 15 kg/ha, K₂O = 40 kg/ha. The recommended nutrient rates for optimum yield are N = 120 kg/ha, P₂O₅ = 60 kg/ha and K₂O = 80 kg/ha. The farmer can use the following fertilizers only: - Urea (46% N by weight) - Single superphosphate (16% P₂O₅ by weight) - Muriate of potash (60% K₂O by weight) - A blended NPK fertilizer labelled 12‑12‑12 (12% N, 12% P₂O₅, 12% K₂O by weight) Determine the combination of these fertilizers that meets the nutrient deficits exactly while **minimising the total weight of fertilizer applied**. Give the minimum total weight (in kg, rounded to the nearest kilogram).
Answer Options
About This Question
This is Waec Model Questions Vol1 2019 Geography Question 8. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Geography examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.