Neco Model Questions Vol1 2017 Agricultural Science Question 2

Practice essay / theory question 2 from the 2017 Neco Model Questions Vol1 Agricultural Science examination. This question covers Soil Infiltration, Soil Physical Properties, Laboratory Methods .

Neco Model Questions Vol1 2017 Agricultural Science Essay / Theory

Topics: Soil Infiltration Soil Physical Properties Laboratory Methods

Question 2 NECO_MODEL_QUESTIONS_VOL1 • 2017 • AGRICULTURAL_SCIENCE • essay

The diagram shows a laboratory setup used to determine the infiltration rate of three soil types (sand, loam and clay) arranged in separate columns. Each column is 30 cm tall with a cross‑sectional area of 100 cm². Water is added at a constant rate of 200 mL min⁻¹ to the top of each column via a funnel. The outflow is collected in a graduated cylinder.

Question Parts

( a )

Explain how this setup allows the measurement of infiltration rate for each soil type.

( b )

If the outflow from the sand column stabilises at 150 mL min⁻¹ after the first 5 minutes, calculate the infiltration rate (in cm hr⁻¹) for the sand column.

( c )

Discuss two factors that could cause the measured infiltration rates to differ from those in the field.

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About This Question

This is Neco Model Questions Vol1 2017 Agricultural Science Question 2. It is one of the essay questions from the 2017 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Soil Infiltration, Soil Physical Properties, Laboratory Methods .

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