Neco 2022 Agricultural Science Question 42
Practice objective / multiple choice question 42 from the 2022 Neco Agricultural Science examination.
Soil test results for a maize field show available phosphorus (P) = 8 mg kg⁻¹ and potassium (K) = 120 mg kg⁻¹. The target levels are P = 20 mg kg⁻¹ and K = 150 mg kg⁻¹. Fertiliser DAP contains 46\% P₂O₅ and MOP contains 60\% K₂O. For this soil, an increase of 1 mg kg⁻¹ P requires 2 kg ha⁻¹ of P₂O₅, and an increase of 1 mg kg⁻¹ K requires 1.5 kg ha⁻¹ of K₂O. Calculate the amount of DAP (kg ha⁻¹) and MOP (kg ha⁻¹) needed to meet both nutrient targets, assuming nitrogen supplied by DAP is sufficient and no other sources are used.
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About This Question
This is Neco 2022 Agricultural Science Question 42. It is one of the objective questions from the 2022 Neco Agricultural Science examination.
Difficulty level: Medium .
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