Neco 2017 Agricultural Science Question 2

Practice essay / theory question 2 from the 2017 Neco Agricultural Science examination. This question covers Soil Science .

Neco 2017 Agricultural Science Essay / Theory
Topic: Soil Science
Question 2 NECO • 2017 • AGRICULTURAL_SCIENCE • essay

A soil laboratory is set up to determine the bulk density of a field soil using the core method. The arrangement of the equipment is shown in the diagram.

Question Parts

( a )
Describe the step‑by‑step procedure for determining bulk density using the core method as illustrated in the diagram.
( b )
A cylindrical core of internal diameter 5 cm and length 10 cm was used. The wet mass of the core with soil was 850 g and the dry mass after oven‑drying was 720 g. Calculate the bulk density of the soil in g cm⁻³. Show all calculations.
( c )
Assuming a particle density of 2.65 g cm⁻³ for the soil minerals, (i) calculate the porosity of the soil, and (ii) discuss what the obtained bulk density and porosity indicate about soil compaction for agricultural use.

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About This Question

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

The question covers Soil Science .

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