Neco 2023 Agricultural Science Question 19

Practice objective / multiple choice question 19 from the 2023 Neco Agricultural Science examination.

Neco 2023 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 19 NECO • 2023 • AGRICULTURAL_SCIENCE • objective

A soil test indicates the following available nutrients per hectare: nitrogen (N) 20 kg, phosphorus (P) 10 kg, and potassium (K) 15 kg. The target maize yield is 8 t ha\(^{-1}\). The nutrient removal rates for maize are 20 kg N t\(^{-1}\), 5 kg P t\(^{-1}\), and 15 kg K t\(^{-1}\). Assuming that only 50 % of the applied fertilizer becomes available to the crop, calculate the amount of N, P and K (in kg ha\(^{-1}\)) that must be applied as fertilizer to meet the target yield.

Answer Options

A. N 320 kg, P 80 kg, K 240 kg per hectare
Correct Answer B. N 280 kg, P 60 kg, K 210 kg per hectare
C. N 187 kg, P 40 kg, K 140 kg per hectare
D. N 140 kg, P 30 kg, K 105 kg per hectare
Correct Answer
B
Correct Option:
N 280 kg, P 60 kg, K 210 kg per hectare

About This Question

This is Neco 2023 Agricultural Science Question 19. It is one of the objective questions from the 2023 Neco Agricultural Science examination.

Difficulty level: Medium .

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