Biofertilizers are natural substances that use microorganisms to improve soil fertility and crop quality. By combining different microorganisms in a consortium, plant growth, nodulation, and nitrogen fixation can be significantly enhanced. Some microorganisms also act as biocontrol agents, protecting plants from harmful pathogens. These biofertilizers are eco-friendly and ensure a continuous supply of nutrients for crops. Overall, using biofertilizers can help increase crop yield without harming the environment.