Practice Materials (51.5.2.a.iii) - Drainage of Irrigated Lands – Necessity, Methods

Practice: Materials

Lesson 51.5.2.a.iiiDrainage of Irrigated Lands – Necessity, Methods

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9 questions

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6 sample questions

Question 1.
What is surface drainage?
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Think about how water is collected and moved away from flat land.
Question 2.
Name one method of subsurface drainage.
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Consider what might be buried underground in agricultural fields.
3Question 3.
What is the primary purpose of surface drainage methods?
- To store water
- To remove excess water
- To increase soil salinity
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Consider what happens when it rains heavily.
4Question 4.
True or False: Subsurface drainage methods are only effective in sandy soils.
- True
- False
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Think about the different kinds of soil used for cultivation.
Question 5.
You are a farmer with a field experiencing regular waterlogging after rains. Design a comprehensive drainage strategy that incorporates both surface and subsurface methods appropriate for your soil type.
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Consider the depth for both types of drainage and how they will work together.
Question 6.
Evaluate the effectiveness of mole drainage in a region that receives both heavy rains and has poor soil permeability. What would be the limitations?
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Think about how mole drains are constructed and their interaction with soil type.

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