Biofertilizers refers to the natural fertilizers containing beneficial live microbes.
Biofertilizers augment the soil environment by supplying micronutrients and macronutrients.
Biofertilizers enhance the soil fertility by nitrogen fixation, phosphate solubilization, potassium mineralization, organic matter degradation, antibiotic production in the soil.
Biofertilizers enrich soil by release of plant growth regulators.
Cyanobacteria extends the amount of nitrogen and carbon uptake by the soil to complement soil productivity.
Rhizobium is involved in symbiotic relationship with legumes and nitrogen fixation.
Final Answer:
Biofertilizers enhance soil fertility by nitrogen fixation and macronutrients supply.