Which is correct about nitrogen fixation by legumes. They fix nitrogen through
Specialised bacteria in their roots
Specialised bacteria in their leaves
Independent of bacteria that live in their roots
The statement is wrong
Azotobacter and Bacillus polymyxa are
Biofertilizers include
A water fern, which is used as a green manure in rice fields is
How are microbes useful in biofertilisers ?
The best fertilizer for paddy is