Abstract
The land is a limited resource. Due to the increase in population; it is necessary to increase crop yield from the viewpoint of food security. The sole use of inorganic fertilizers may create an imbalance in soil health by the reduction in crop yield. For sustainable crop production, it is necessary to balance the soil health using organics and bio-fertilizers along with the optimum use of chemical fertilizers. Bio-fertilizers are important in the nutrient management of crops because of their role in nutrient supply leading to reduce the use of chemical fertilizers. The use of Bio-fertilizers is a cost-effective and eco-friendly technology in crop production which is gaining importance in crop production the commonly used biofertilizers are azotobactor, azosprillium, PSB, VAM fungi.
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