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:
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A hard Environment multiple-choice question from UPSC Prelims 2020. Attempt it above, then check the correct answer and detailed explanation below.
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Correct answer: C. 1, 3 and 4 only
Fertigation allows control of irrigation-water alkalinity (via acidic inputs), increases nutrient availability to plants and reduces leaching of nutrients (1, 3 and 4). It is not suited to rock phosphate and other insoluble phosphatic fertilizers (2 wrong).
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