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UPSC PYQPrelims 2020

Civil Services Examination · Question 91

What are the advantages of fertigation in agriculture? 1. Controlling the alkalinity of irrigation water is possible. 2. Efficient application of Rock Phosphate and all other phosphatic fertilizers is possible. 3. Increased availability of nutrients to plants is possible. 4. Reduction in the leaching of chemical nutrients is possible. Select the correct answer using the code given below:

  1. 1, 2 and 3 only
  2. 1, 2 and 4 only
  3. 1, 3 and 4 only
  4. 2, 3 and 4 only
Show answer & explanation

Answer: (C) 1, 3 and 4 only

Explanation

Fertigation allows pH/alkalinity control, better nutrient availability and less leaching. Rock phosphate and many phosphatic fertilisers are insoluble and unsuited to fertigation.