CBSE Class 12-science Answered
Biofertilisers are organisms that enrich the nutrient quality of soil.
Significance of biofertilisers:
1. Increase the soil fertility
2. Reduce the use of chemical fertilisers and in turn, the chances of environmental pollution
Biofertilisers- Azolla-AnabaenaThis video discusses the use of Azolla-Anabaena as biofertilisers.
Biofertilisers- CyanobacteriaThis video discusses why cyanobacteria are not preferred as biofertilisers.