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.
