51. Drainage of Irrigated Lands – Necessity, Methods

Try these first

1. 1.

   What is waterlogging?

   Hint

   Think about what happens when plants are submerged in water.

2. 2.

   Name one method of surface drainage.

   Hint

   Consider physical channels that move water away.

3. 3.

   What is the main purpose of drainage in irrigated lands?

   • To store water
   • To prevent waterlogging
   • To increase soil salinity

   Hint

   Think about the conditions that lead to crop failures.

4. 4.

   True or False: Surface drainage systems include open ditches.

   • True
   • False

   Hint

   Recall the types of drainage mentioned.

5. 5.

   Conceptualize a drainage system for a local farm prone to waterlogging. What factors must you consider?

   Hint

   Visualize how water flows and where it collects.

6. 6.

   Assess the environmental impacts of excessive drainage implementation in your area.

   Hint

   Consider both immediate and long-term ecological changes.