Bio-fertilizers are needed to increase the agricultural yields. These enhance crop yields and encourage plant growth. Also, these can enhance soil health by boosting crop yields. Their usage is safe as they are chemical-free. Also, these are useful in sustaining the natural fertility of soil. They are easily accessible and cost-effective. Bio-fertilizers are organic products, which can be used by low-income farmers for maintaining the optimum crop yields. These can boost plant resilience and have ingredients which can deal with abiotic stresses. They can be used after drought, water surplus shortages and extreme cold.