pyq/2020/prelims/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?

(A) 1 and 2 only

(B) 2 only

(C) 1 and 3 only

(D) 1, 2 and 3