Waec Model Questions Vol1 2021 Agricultural Science Question 4

Practice essay / theory question 4 from the 2021 Waec Model Questions Vol1 Agricultural Science examination. This question covers Crop Production, Crop Rotation .

Waec Model Questions Vol1 2021 Agricultural Science Essay / Theory

Topics: Crop Production Crop Rotation

Question 4 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • AGRICULTURAL_SCIENCE • essay

A farmer rotates maize, soybean and groundnut on a 3‑ha field over three years.

Question Parts

( a )

State two agronomic benefits of this rotation sequence.

( b )

If the initial soil nitrogen (N) level is 50 kg ha⁻¹, soybean adds 30 kg ha⁻¹ of N, and groundnut removes 10 kg ha⁻¹, calculate the net change in soil N after the three‑year rotation. Show all steps.

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About This Question

This is Waec Model Questions Vol1 2021 Agricultural Science Question 4. It is one of the essay questions from the 2021 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Crop Production, Crop Rotation .

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