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UPSC Prelims 2020 Paper-1 📅 04 Oct, 2020

What is the use of biochar in farming?
1. Biochar can be used as a part of the growing medium in vertical farming.
2. When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.
3. When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time.
Which of the statements given above is/are correct?

A
1 and 2 only
B
2 only
C
1 and 3 only
D
1, 2 and 3
Result Summary
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UPSC Prelims
2020 • 04 Oct, 2020 • Paper-1
What is the use of biochar in farming?
1. Biochar can be used as a part of the growing medium in vertical farming.
2. When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.
3. When biochar is a part of the growing medium, it enables the growing medium to retain water for longer time.
Which of the statements given above is/are correct?
Correct Answer
1, 2 and 3
Application Flexibility: Biochar is a highly porous, carbon-rich substance created through the pyrolysis of organic biomass. Due to its stability and structure,......
Ref/Book : UPSC Prelims 2020
Ref. Subject Environment
Chapter -
Ref. Topic Agriculture
Pg. No -
💡 Analysis & Explanation
Application Flexibility ▼
Biochar is a highly porous, carbon-rich substance created through the pyrolysis of organic biomass. Due to its stability and structure, it is increasingly being integrated into soil mixtures and growing media for advanced agricultural setups, including hydroponics and vertical farming. Statement 1 is correct.
Microbial Promotion ▼
The complex, porous micro-structure of biochar provides an excellent, safe habitat for beneficial soil microbes. Research shows it actively stimulates the proliferation of nitrogen-fixing and mycorrhizal microorganisms, dramatically improving soil health. Statement 2 is correct.
Hydrological Benefits ▼
Because of its sponge-like physical architecture, blending biochar into the soil or growing medium significantly increases the overall water-holding capacity, preventing drought stress and nutrient leaching. Statement 3 is correct.
Conclusion ▼
All three statements reflect the validated agronomic advantages of using biochar.
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