ABSTRACT
Biofertilizers function as key players in sustainable agriculture by improving soil fertility, plant tolerance, and crop productivity. Since, inorganic chemical-based fertilizers cause a serious threat to human health and environment; thus, biofertilizers have become a center of interest because of issues such as maintaining soil health, checking environmental pollution, cutting down the use of chemicals for crop production, and so on. The biofertilizers are a vital component for the soil fertility management in sustainable agriculture. They are well suited for organic farming. Almost all the essential plant nutrients to the crops can be supplied through biofertilizers. Microorganisms such as rhizobium, azotobactor, azospirillum, azorhizobium, sinorhizobium, acetobacter, frankia, phosphate solublizers, VAM, Azolla- Blue-green algae, and so on can be used as inoculants for many plants. They help enhance absorption and make available the nutrient to the plants. The use of these inoculants is based upon an effective quality control system and a powerful extension machinery. One of the major concerns in today's world is the pollution and contamination of soils. An answer to this is biofertilizers, environmentally friendly fertilizers now used in most countries.
