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?

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UPSC Question: What is the use of biochar in farming? ...

What is the use of biochar in farming?

Biochar can be used as a part of the growing medium in vertical farming.
When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms.
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?