Neco Model Questions Vol1 2022 Agricultural Science Question 2

Practice essay / theory question 2 from the 2022 Neco Model Questions Vol1 Agricultural Science examination. This question covers Soil Science, Soil Water Relations, Gravimetric Method .

Neco Model Questions Vol1 2022 Agricultural Science Essay / Theory
Topics: Soil Science Soil Water Relations Gravimetric Method
Question 2 NECO_MODEL_QUESTIONS_VOL1 • 2022 • AGRICULTURAL_SCIENCE • essay

A soil‑water retention experiment is to be carried out in the school laboratory to determine the gravimetric water content of a loamy soil at field capacity and at permanent wilting point.

Question Parts

( a )
Using the diagram of the experimental setup, describe the step‑by‑step procedure for obtaining the masses required to calculate water content at field capacity and wilting point.
( b )
The following masses were recorded: - Mass of empty container: 50 g - Mass of container + air‑dry soil: 200 g - Mass of container + soil at field capacity (after 24 h drainage): 260 g - Mass of container + soil at permanent wilting point: 210 g Calculate the gravimetric water content (expressed as % of dry soil mass) at field capacity and at wilting point.
( c )
Interpret the results obtained in part (b) and recommend an irrigation schedule for the crop season, assuming the crop requires a minimum soil moisture of 15 % (gravimetric) for optimal growth.

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About This Question

This is Neco Model Questions Vol1 2022 Agricultural Science Question 2. It is one of the essay questions from the 2022 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Soil Science, Soil Water Relations, Gravimetric Method .

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