Question

Choose the incorrect pair from the following:

विकल्प

• Organic fertilizers → Agricultural residue

• Composting → Organic wastes

• Vermicomposting →  Earthworms

• Green manure →  Chemical compounds

Answer 1

Green manure →  Chemical compounds

Explanation:

Green manure is plants, including various leguminous and nonleguminous crops, produced in the field and then ploughed into the soil. This procedure enriches the soil with nitrogen, phosphorus, calcium, sulphur, and other minerals. Microorganisms degrade the complex organic stuff that plants contain. Green manure does not contain any chemicals.