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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. (a)1 and 2 only
  2. (b)3 only
  3. (c)1 and 3 only
  4. (d)None of the above is an advantage of practising drip irrigation
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Official answer(a) 1 and 2 only