Q. 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 part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.
3.When biochar is part of the growing medium, it helps retain water for a longer time.
Which of the statements given above is/are correct?
Answer: D
Notes:
Explanation: Biochar improves soil health by enhancing microbial activity (including nitrogen fixers), increasing water retention, and is used in various farming methods including vertical farming.
Source- TH
