Practice Vertical Drainage (deep Wells) (51.5.2.b) - Drainage of Irrigated Lands – Necessity, Methods

Practice: Vertical Drainage (Deep Wells)

Lesson 51.5.2.bDrainage of Irrigated Lands – Necessity, Methods

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9 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is vertical drainage?
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Think about how we control the water table for crops.
Question 2.
Name one benefit of deep wells.
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How does maintaining a low water table help crops?
3Question 3.
What is the primary function of deep wells in vertical drainage?
- To irrigate crops
- To lower the water table
- To provide nutrients
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Consider why managing the water table is important for crops.
4Question 4.
True or False: High salinity can enhance crop growth.
- True
- False
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What happens to plants when they are in saline soils?
Question 5.
A farmer in a region with high groundwater faces crop failures due to waterlogging. Design a plan using vertical drainage systems.
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Consider both the environmental factors and the crop requirements in your design.
Question 6.
Calculate the flow rate needed for a deep well to lower the water table by 1 meter in a field of 1 hectare, assuming the soil has a constant permeability of 10 m/day.
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Remember to relate the area of the field to the amount of water to be extracted.

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