Biofertilizers are organisms that help in enriching the soil with nutrients. Example of few microbes that are common biofertilizers are as below:
• Rhizobium, Azospirillum and Azotobacter help in nitrogen fixation and hence, enrich the soil with nitrogen.
• Fungi such as mycorrhiza form symbiont relationship with plants and absorbs phosphorus from soil and passes it to the plant.
• Cyanobactaria help in nitrogen fixation and is an important biofertilizer.
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