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UPSC 2020: 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:
(a)1, 2 and 3 only
(b)1, 2 and 4 only
(c)1, 3 and 4 only
(d)2, 3 and 4 only
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Not attemptedCorrect Answer: (c) 1, 3 and 4 only
Through fertigation the acidity/alkalinity (pH) of irrigation water can be adjusted (1), nutrients are delivered directly to the root zone increasing their availability (3) and the precise, small-dose application cuts nutrient leaching losses (4). Rock phosphate is almost insoluble and cannot be efficiently injected through drip lines, so statement 2 is wrong. Therefore, statements 1, 3 and 4 only → option (c). ([sprintupsc.com](https://sprintupsc.com/PreviousYearsWeb/upsc-prelims-2020-answer-key.html?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2020 Environment & Ecology question?▼
The correct answer is option (c): 1, 3 and 4 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Sustainable Agriculture & Forestry question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2020, GS Paper 1, as Question 91. It falls under Environment & Ecology > Sustainable Agriculture & Forestry.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Sustainable Agriculture & Forestry?▼
UPSC has asked 31 questions from Sustainable Agriculture & Forestry (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.