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UPSC Prelims 1989 · Agriculture · Soils
Fertility of soil can be improved by
- (a) Removing dead earthworms
- (b) Adding dead earthworms
- (c) Adding living earthworms
- (d) Removing living earthworms and adding dead earthworms
Show the answer and explanation
Answer: (c) Adding living earthworms
Living earthworms mix, aerate and enrich soil with their casts.
Why the others are wrong
(b) Dead earthworms add a little organic matter but don’t work the soil.
The trap
None.
🔒 Earthworms: “farmer’s friend”; vermicompost.