Gce Model Questions Vol1 2017 Agricultural Science Question 5
Practice objective / multiple choice question 5 from the 2017 Gce Model Questions Vol1 Agricultural Science examination.
A soil test shows available nutrients of N = 40 kg ha⁻¹, P₂O₅ = 20 kg ha⁻¹ and K₂O = 30 kg ha⁻¹. The target levels for optimal maize yield are N = 120 kg ha⁻¹, P₂O₅ = 60 kg ha⁻¹ and K₂O = 80 kg ha⁻¹. The farmer wishes to apply a single blended fertilizer containing urea (46 % N), triple superphosphate (46 % P₂O₅) and muriate of potash (60 % K₂O) in the weight ratio 3 : 2 : 1 (urea : TSP : MOP). Determine the maximum amount of this blended fertilizer (kg ha⁻¹) that can be applied without exceeding any of the three nutrient targets by more than 5 %. Identify the limiting nutrient and give the quantities of urea, TSP and MOP in the blend at this application rate.
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About This Question
This is Gce Model Questions Vol1 2017 Agricultural Science Question 5. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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