Define (i) Vermicompost (ii) Green manure (iii) Bio fertilizer

Vermicompost:

Manure which is rich is organic materials. Vermicompost is prepared by using earthworms, plant and animal waste. Earthworms helps in composting organic waste to give a nutrient rich manure.

Green Manure:

Manure prepared by composting green plant is known as green. Green manure is usually made in the field Ex: Hemp is allowed to decompose to get green manure.

Bio-fertilizers:

Usage of living organisms to provide nutrient to plant and to make soil fertile is known as bio fertilizers. Ex: Blue green algae used as bio-fertilizer in paddy fields.