UPSC CSE Prelims
Agriculture Science & Technology Previous Year Questions (PYQs)
Showing solved Previous Year Questions for Chapter: Agriculture Science & Technology
Topic Breakdown: Scroll →
Why does the Government of India promote the use of ‘Neem-coated Urea’ in agriculture?
Detailed Explanation:
✅ Statement 2 – Correct: Neem coating acts as a nitrification inhibitor, slowing down the conversion of urea to nitrate, thereby reducing nitrogen losses through leaching, volatilization and denitrification, and ensuring gradual nitrogen release for better crop uptake.
❌ Statement 1 – Incorrect: Neem coating does not enhance nitrogen fixation by soil microorganisms; it primarily inhibits nitrification.
❌ Statement 3 – Incorrect: While neem-coated urea reduces nitrous oxide emissions by minimizing denitrification, it does not eliminate greenhouse gas release completely.
❌ Statement 4 – Incorrect: Neem-coated urea is not a weedicide-fertilizer combination; neem acts as a nitrification inhibitor, not a weedicide.
Many transplanted seedlings do not grow because -
Detailed Explanation:
Root hairs are delicate, thin-walled extensions of the root epidermis responsible for water and mineral absorption.
During transplantation, these fragile root hairs are easily broken or damaged, severely reducing the seedling's ability to absorb water and causing transplant failure.
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