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UPSC Prelims 2016 · Agriculture · Seeds, Water and Fertiliser
Which of the following is/are the advantage/advantages of practicing drip irrigation? Select the correct answer using the code given below.
- Reduction in weed
- Reduction in soil salinity
- Reduction in soil erosion
- (a) 1 and 2 only
- (b) 3 only
- (c) 1 and 3 only
- (d) None of the above is an advantage of practicing drip irrigation
Show the answer and explanation
Answer: (c) 1 and 3 only
Fewer weeds and no erosion.
Statement by statement
1. ✓ YES Only the crop row is wetted, so fewer weeds grow.
2. ✗ NO Drip doesn’t reduce salinity; salts can build up at the wetting edge.
3. ✓ YES No surface flow, so no erosion.
Why the others are wrong
(a) Accepts reduced salinity.
(b) Drops weed reduction.
(d) Drip does have advantages.
The trap
Drip saves water, so it “feels” like it must cure salinity too.
🔒 Drip / sprinkler: PMKSY “Per Drop More Crop”.
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