Neco 2019 Agricultural Science Question 2

Practice essay / theory question 2 from the 2019 Neco Agricultural Science examination. This question covers Soil Physics, Field Capacity, Gravimetric Method, Soil Moisture .

Neco 2019 Agricultural Science Essay / Theory

Topics: Soil Physics Field Capacity Gravimetric Method Soil Moisture

Question 2 NECO • 2019 • AGRICULTURAL_SCIENCE • essay

A student is carrying out a laboratory experiment to determine the field capacity of a soil sample using the gravimetric method. The experimental arrangement is shown in the diagram.

Question Parts

( a )

Describe, in order, the steps the student must follow to obtain the field capacity of the soil using this set‑up.

( b )

The dry weight of the soil sample is 250 g. After saturation and 30 minutes drainage, the weight of the soil‑water mixture is 420 g. Calculate the field capacity of the soil as a percentage.

( c )

Explain why knowing the field capacity of a soil is important for planning irrigation on a farm.

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About This Question

This is Neco 2019 Agricultural Science Question 2. It is one of the essay questions from the 2019 Neco Agricultural Science examination.

The question covers Soil Physics, Field Capacity, Gravimetric Method, Soil Moisture .

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