Question:

Which of the following drippers are most suitable on slopes and difficult topographic terrains?

Show Hint

Pressure compensating drippers are useful where pressure changes due to slope or uneven terrain.
  • Online non-pressure compensating drippers
  • In line drippers
  • Online pressure compensating drippers
  • Adjustable discharge type drippers
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The Correct Option is C

Solution and Explanation

Concept:
In drip irrigation, uniform water discharge from emitters is very important.

Step 1:
On slopes and uneven terrain, pressure varies along the lateral pipe.

Step 2:
If ordinary drippers are used, discharge may be high at some points and low at others.

Step 3:
Pressure compensating drippers maintain nearly uniform discharge even when pressure varies.

Step 4:
Therefore, they are suitable for slopes and difficult topographic conditions.

Step 5:
Hence, the correct answer is online pressure compensating drippers. \[ \boxed{\text{Online pressure compensating drippers}} \]
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