UPSC CSE Prelims
Agricultural Challenges and Reforms Previous Year Questions (PYQs)
Practice solved questions for Agricultural Challenges and Reforms with detailed step-by-step solutions, key insights, and trend analysis for UPSC CSE PRELIMS.
Solved Previous Year Questions
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Consider the following agricultural practices:
- Contour bunding
- Relay cropping
- Zero Tillage
In the context of global climate change, which of the above helps/help in carbon sequestration/storage in the soil?
Detailed Explanation:
Carbon sequestration is the process of capturing and storing atmospheric CO₂ in soil organic matter, helping mitigate climate change.
✅ Contour bunding: Prevents soil erosion on slopes, retains organic matter and moisture, enhancing carbon storage in soil.
✅ Relay cropping: Maintains continuous soil cover by sowing second crop before first harvest, reduces soil disturbance, increases biomass return and carbon sequestration.
✅ Zero tillage: Eliminates soil disturbance, preserves soil structure, increases organic matter retention and microbial activity, significantly enhances carbon storage.
All three practices contribute to carbon sequestration in soil.
Which of the following is the chief characteristic of ‘mixed farming’?
Detailed Explanation:
Mixed farming is an agricultural system where crop cultivation and livestock rearing are practised together on the same farm.
The animals provide manure for crops while crops provide fodder for animals, creating an integrated farming system; this is distinct from mixed cropping (growing multiple crops simultaneously) or crop rotation (sequential planting).
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