Neco Model Questions Vol1 2018 Geography Question 46
Practice objective / multiple choice question 46 from the 2018 Neco Model Questions Vol1 Geography examination.
A soil profile has 40 % sand, 35 % silt and 25 % clay. The field capacity (FC) percentage can be approximated by \( \text{FC} = 0.2(\%\text{clay}) + 0.1(\%\text{silt}) \). The root zone depth is 30 cm. The water that the soil can hold (in mm) is given by \( W = \frac{\text{FC} \times \text{depth(cm)}}{10} \). A crop requires 60 mm of water from the soil.\n\n(a) Calculate the field capacity percentage.\n(b) Determine the amount of water (in mm) the soil can store in the root zone.\n(c) State whether the soil alone can meet the crop's water requirement.\n(d) If it cannot, find the additional water (in mm) that must be supplied by irrigation.
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About This Question
This is Neco Model Questions Vol1 2018 Geography Question 46. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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