The biofertilizer present in the roots of legumes is
Anabaena
Rhizobium
Azospirillum
All of the above
Which disease is caused in children due to excessive use of nitrate fertilizers
In paddy fields, _______ serves as an important biofertiliser
Why are blue green algae not popular as biofertilisers ?
Which one is a biofertilizer
How are microbes useful in biofertilisers ?