WAEC Agricultural Science 2022 Objective — Question 22

Question 22 of 50 from the West African Examinations Council (WAEC) Agricultural Science 2022 Objective paper, with the correct answer and a full explanation.

If maize seeds are sown at a spacing of 60 cm by 90 cm, what is the plant population expected on one hectare of farmland?

A. 18,519 plantsCorrect
B. 16,667 plants
C. 11,111 plants
D. 5,400 plants

Explanation

Plant population = Area of one hectare (10,000 m²) ÷ Spacing area (0.6m × 0.9m = 0.54 m²) = 10,000 ÷ 0.54 ≈ 18,519 plants.

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