What is the use of biochar in farming? 1.‘Biochar c

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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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1.’???? ?? ????? ????????? ???? ??? ????? ?????? ?? ?????? ?? ??? ??? ???? ?? ???? ???

2. ?? ??????? ????? ?????? ?? ?? ?????? ??, ?? ????????? ?? ?????? ?? ?????? ???? ??- ???????????? ?? ??? ???? ???

3. ?? ??????? ?????- ????? ?? ?? ?????? ??, ?? ????? ?????? / ?? ???? ??? ?? ???? ???? ???? ??? ????? ????? ???

??? ??? ?? ????? ??? ?? ??? ?? ??? ?? / ????

[UPSC CSE PRE 2020,Ecology and Environment 2017-2020]

A 1 and 2 only

केवल 1 और 2

B 2 only

२ ही

C 1 and 3 only

केवल 1 और 3

D 1, 2 and 3

1, 2 और 3

Answer: (d) Explanation: Biochar has the potential to produce farm-ba...

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