Neco Model Questions Vol1 2024 Agricultural Science Question 2

Practice essay / theory question 2 from the 2024 Neco Model Questions Vol1 Agricultural Science examination. This question covers Soil water retention, Soil amendments .

Neco Model Questions Vol1 2024 Agricultural Science Essay / Theory
Topics: Soil water retention Soil amendments
Question 2 NECO_MODEL_QUESTIONS_VOL1 • 2024 • AGRICULTURAL_SCIENCE • essay
Neco Model Questions Vol1 2024 Agricultural Science Question 2 diagram

A soil scientist conducts an experiment to compare the water‑holding capacity of three soil samples: (i) a control sandy loam, (ii) sandy loam mixed with 10 % compost by weight, and (iii) sandy loam mixed with 10 % gypsum by weight. The experimental set‑up is shown in the diagram.

Question Parts

( a )
Describe the step‑by‑step procedure for determining the water‑holding capacity of each sample using the set‑up.
( b )
After saturation and drainage, the masses recorded were: control 520 g, compost‑amended 540 g, gypsum‑amended 530 g. The dry mass of each sample before the experiment was 500 g. Calculate the water‑holding capacity (percentage by weight) for each sample.
( c )
Interpret the results and recommend which amendment is most effective for improving water retention in this soil type.

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About This Question

This is Neco Model Questions Vol1 2024 Agricultural Science Question 2. It is one of the essay questions from the 2024 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Soil water retention, Soil amendments .

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