UPSC Previous Year Question | Prelims GS | 2016

Which of the following is/are the advantage/advantages of practising drip irrigation? 1. Reduction in weed 2. Reduction in soil salinity 3. Reduction in soil erosion Select the correct answer using the code given below.

  1. 1 and 2 only
  2. 3 only
  3. 1 and 3 only
  4. None of the above is an advantage of practising drip irrigation

Answer

Correct Answer

1 and 3 only

Explanation

Drip irrigation reduces weed growth (by wetting only the root zone) and reduces soil erosion (by limiting water flow), making statements 1 and 3 correct. It does not particularly reduce soil salinity, making statement 2 incorrect.

Topics: agriculture, drip irrigation advantages, environment, irrigation methods