UPSC 2020 › Environment & Ecology › Sustainable Agriculture & Forestry

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 ?

What is/are the advantage/advantages of zero tillage in agriculture ?

1. Sowing of wheat is possible without burning the residue of previous crop.
2. Without the need for nursery of rice saplings, direct planting of paddy seeds in the wet soil is possible.
3. Carbon sequestration in the soil is possible.

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In the context of India, which of the following is/are considered to be practice(s) of eco-friendly agriculture ?

1. Crop diversification
2. Legume intensification
3. Tensiometer use
4. Vertical farming

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What are the advantages of fertigation in agriculture ?

1. Controlling the alkalinity of irrigation water is possible.
2. Efficient application of Rock Phosphate and all other phosphatic fertilizers is possible.
3. Increased availability of nutrients to plants is possible.
4. Reduction in the leaching of chemical nutrients is possible.

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