Waec Model Questions Vol1 2018 Agricultural Science Question 2
Practice objective / multiple choice question 2 from the 2018 Waec Model Questions Vol1 Agricultural Science examination.
A farmer wants to raise maize yield from 2.5 t ha⁻¹ to 4.0 t ha⁻¹. For each additional tonne of grain, the crop requires 25 kg N ha⁻¹, 12 kg P₂O₅ ha⁻¹ and 20 kg K₂O ha⁻¹. Soil tests show the soil already supplies 30 kg N, 15 kg P₂O₅ and 40 kg K₂O per hectare. The farmer intends to apply a single fertilizer blend that contains 20 % N, 10 % P₂O₅ and 15 % K₂O by weight. What is the minimum amount of this blend (kg ha⁻¹) needed to meet the nutrient deficits for the target yield, and will any nutrient be supplied in excess?
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About This Question
This is Waec Model Questions Vol1 2018 Agricultural Science Question 2. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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