Neco Model Questions Vol1 2018 Agricultural Science Question 5

Practice essay / theory question 5 from the 2018 Neco Model Questions Vol1 Agricultural Science examination. This question covers Crop Production, Crop Rotation, Soil Fertility, Fertilizer Use .

Neco Model Questions Vol1 2018 Agricultural Science Essay / Theory
Topics: Crop Production Crop Rotation Soil Fertility Fertilizer Use
Question 5 NECO_MODEL_QUESTIONS_VOL1 • 2018 • AGRICULTURAL_SCIENCE • essay

A farmer has 5 hectares of land in the middle‑belt region of Nigeria. The soil is sandy loam with a pH of 5.8. Average annual rainfall is 1200 mm and the farmer has access to a fertilizer containing NPK 12‑24‑12. The farmer wishes to cultivate maize and soybean in a two‑year rotation to improve soil fertility and increase food security.

Question Parts

( a )
Explain why a maize‑soybean rotation is suitable for the given soil and climate conditions.
( b )
Using the fertilizer recommendation of 100 kg N ha⁻¹ for maize and 50 kg N ha⁻¹ for soybean, calculate the total amount of the NPK 12‑24‑12 fertilizer (in kg) the farmer needs to apply each year for the 5‑ha farm, assuming the farmer applies only the recommended nitrogen. Show all steps of your calculation.
( c )
If the expected yields are 3.5 t ha⁻¹ for maize and 2.2 t ha⁻¹ for soybean, estimate the total production (in tonnes) over the two‑year rotation. Additionally, discuss two agronomic benefits the farmer gains from this rotation.

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About This Question

This is Neco Model Questions Vol1 2018 Agricultural Science Question 5. It is one of the essay questions from the 2018 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Crop Production, Crop Rotation, Soil Fertility, Fertilizer Use .

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