Q80. 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 a 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
Answer: D
- Statement 1 is correct: It can be used as a part of the growing medium in vertical farming.
- Statement 2 is correct: Due to its adsorption ability, some biochar has the potential to immobilize heavy metals, pesticides, herbicides, and hormones; prevent nitrate leaching and fecal bacteria into waterways; and reduce N2 O and CH4 emissions from soils.
- Statement 3 is correct: Biochar holds the potential for long-term carbon sequestration, improving soil health and water-holding capacity, and further reducing emissions of greenhouse gases associated with fertilizer application.
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