Civil Services Examination · வினா 80

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?

1. A1 and 2 only
2. B2 only
3. C1 and 3 only
4. D1, 2 and 3