Neco 2023 Agricultural Science Question 5

Practice essay / theory question 5 from the 2023 Neco Agricultural Science examination. This question covers Crop Production .

Neco 2023 Agricultural Science Essay / Theory
Topic: Crop Production
Question 5 NECO • 2023 • AGRICULTURAL_SCIENCE • essay

A mixed‑farming enterprise intends to implement a three‑year crop rotation of maize (Zea mays), soybean (Glycine max) and cassava (Manihot esculenta) on a total cultivated area of 10 ha.

Question Parts

( a )
Assuming average yields of 4.5 t ha⁻¹ for maize, 2.8 t ha⁻¹ for soybean and 15 t ha⁻¹ for cassava, calculate the total quantity of each crop produced over the three‑year rotation and the combined total production (in tonnes).
( b )
Soybean fixes atmospheric nitrogen at a rate of 50 kg N ha⁻¹ per year. Maize requires 150 kg N ha⁻¹ for optimal growth. Determine the amount of nitrogen that must be supplied to the maize crop each year after accounting for the nitrogen contributed by the preceding soybean crop. Express the required synthetic nitrogen fertilizer (in kg) for the maize field (5 ha).
( c )
Discuss at least three agronomic or economic advantages of practising this crop rotation in the given context.

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About This Question

This is Neco 2023 Agricultural Science Question 5. It is one of the essay questions from the 2023 Neco Agricultural Science examination.

The question covers Crop Production .

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