What are green manures? Why are biofertilisers preferred over chemical fertilisers?

What are green chemicals?

Why biocontrol is preferred over conventional farming?

Which one is green manure/biofertilizer

Differentiate between manures and biofertilisers.

What are biofertilisers? Give two examples.

Which are used as green manure

Why are blue-green algae not popular as biofertilisers?

How is green manure prepared?

A good green manure in rice fields is

Assertion: Biofertilisers are preferred to chemical fertilisers. Reason: Most of the chemical fertilisers are expensive, hazardous and damage the environment.