What is/are the advantage/advantages of zero tillage in agriculture?Sowing of wheat is possible with

Q: What is UPSC Prelims?

UPSC Prelims is a competitive examination conducted in India. This question is from the 2020 UPSC Prelims Environment & Ecology paper.

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This UPSC Prelims 2020 Environment & Ecology question has a medium difficulty level and is marked as an important question.

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Question

What is/are the advantage/advantages of zero tillage in agriculture?Sowing of wheat is possible without burning the residue of previous crop.Without the need for nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible.Carbon sequestration in the soil is possible.Select the correct answer using the code given below:

Accepted Answer

Correct Answer: D — 1, 2 and 3Step-by-step Solution:Zero tillage (no‑till farming) avoids ploughing; seeds are sown directly into the previous crop’s stubble.Statement 1: Correct. Machines like the Happy Seeder allow wheat sowing without burning paddy stubble, reducing air pollution. ✓Statement 2: Correct. Direct Seeded Rice (DSR) eliminates nursery preparation and transplanting; seeds are sown directly into wet, non‑puddled soil. ✓Statement 3: Correct. By minimising soil disturbance, zero tillage increases soil organic matter and sequesters carbon, mitigating climate change. ✓Why other options are incorrect:Option A (1 and 2 only): Misses statement 3.Option B (2 and 3 only): Misses statement 1.Option C (3 only): Misses statements 1 and 2.Key Concept: Zero tillage is a form of Conservation Agriculture (CA). It saves water, improves soil health, reduces labour, and helps tackle stubble burning. It is promoted under the National Mission for Sustainable Agriculture (NMSA) and the Soil Health Card scheme.

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