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Question
Choose the incorrect pair from the following:
Options
Organic fertilizers → Agricultural residue
Composting → Organic wastes
Vermicomposting → Earthworms
Green manure → Chemical compounds
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Solution
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.
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