Waec Model Questions Vol1 2021 Agricultural Science Question 2

Practice essay / theory question 2 from the 2021 Waec Model Questions Vol1 Agricultural Science examination. This question covers Soil Science .

Waec Model Questions Vol1 2021 Agricultural Science Essay / Theory
Topic: Soil Science
Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • AGRICULTURAL_SCIENCE • essay
Waec Model Questions Vol1 2021 Agricultural Science Question 2 diagram

A soil laboratory technician is required to determine the field capacity (FC) of a soil sample using the pressure plate apparatus.

Question Parts

( a )
Describe the procedure for measuring field capacity with the pressure plate apparatus, including preparation of the soil sample and the pressure applied.
( b )
The technician records that the water retained in the soil after applying 15 kPa is 28 g for a 50 g oven‑dry soil sample. Calculate the field capacity expressed as a percentage of the soil's gravimetric water content.
( c )
Explain two limitations of using the pressure plate method for estimating field capacity in the field.

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About This Question

This is Waec Model Questions Vol1 2021 Agricultural Science Question 2. It is one of the essay questions from the 2021 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Soil Science .

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