NABTEB Agricultural Science 2025 Objective — Question 29

Question 29 of 50 from the National Business and Technical Examinations Board (NABTEB) Agricultural Science 2025 Objective paper, with the correct answer and a full explanation.

If cowpea was planted on the farmland at a spacing of 25cm by 90cm at two seeds per hole, determine the expected plant population of cowpea plants.

A. 355 plants
B. 444 plants
C. 667 plants
D. 888 plantsCorrect

Explanation

Farmland area = 100m2 = 1,000,000cm2. Spacing area per hole = 25cm x 90cm = 2,250cm2. Number of holes = 1,000,000/2,250 = 444. With 2 seeds per hole, expected plant population = 444 x 2 = 888 plants.

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