Waec Model Questions Vol1 2023 Agricultural Science Question 4

Practice essay / theory question 4 from the 2023 Waec Model Questions Vol1 Agricultural Science examination. This question covers Fertilizer Management, Soil Nutrients .

Waec Model Questions Vol1 2023 Agricultural Science Essay / Theory

Topics: Fertilizer Management Soil Nutrients

Question 4 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • AGRICULTURAL_SCIENCE • essay

A soil test for a maize field shows the following nutrient deficiencies: nitrogen 30 kg/ha, phosphorus 20 kg/ha and potassium 15 kg/ha. The farmer intends to use urea (46% N) and diammonium phosphate (DAP) (18% N, 46% P₂O₅).

Question Parts

( a )

Calculate the amount of urea (in kg) required to supply the nitrogen deficiency after accounting for the nitrogen supplied by DAP.

( b )

Calculate the amount of DAP (in kg) needed to meet the phosphorus deficiency (note: 1 kg P₂O₅ = 0.44 kg P).

( c )

State one agronomic practice that can improve the efficiency of the applied fertilizers.

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About This Question

This is Waec Model Questions Vol1 2023 Agricultural Science Question 4. It is one of the essay questions from the 2023 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Fertilizer Management, Soil Nutrients .

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