• Sisir Rajak

Abstract: Biofertilizers are defined as preparation of living cells or efficient microorganism which helps to uptake the nutrients for the growth of plants. Sustainable agriculture is the efficient production of safe, high quality agricultural products, in a way that protects and improves the natural environment, the social and economic conditions of farmers, their employees and local communities, and safeguards the health and welfare of all farmed species. The worldwide increase in human population every year raises a major threat to the food security of the people as the land for agriculture is restricted and even drastic reduction with time. Therefore, it is essential that agricultural productivity should be enhanced significantly within the next few decades to meet the large demand of food by emerging population. For long time chemical fertilizers are used to fulfill the soil requirement of nutrients, but large amount of these chemical fertilizers are dangerous for environment, beneficial microbes, animals and human beings. Therefore, environment friendly and cost effective biofertilizers are used. The exploitation of beneficial microbes as a biofertilizer has become paramount importance in agriculture sector for their potential role in food safety and sustainable crop production. The eco-friendly approaches inspire a wide range of application of plant growth promoting rhizobacteria (PGPRs), endo- and ectomycorrhizal fungi, cyanobacteria and many other useful microscopic organisms led to improved nutrient uptake, plant growth and plant tolerance to abiotic and biotic stress. The present review highlighted the different type of microbes associated with biofertilizers, physiological bases of biofertlizers and their activity towards sustainable agriculture in reducing problems associated with the use of chemicals fertilizers.

Index Terms: Biofertilizer, Chemical fertilizers, Sustainable agriculture, PGPR, Eco-friendly.

"Biofertilizers In Sustainable Agriculture- A Review", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.610-614, February-2019, Available :http://www.jetir.org/papers/JETIR1902F49.pdf

"Biofertilizers In Sustainable Agriculture- A Review", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp610-614, February-2019, Available at : http://www.jetir.org/papers/JETIR1902F49.pdf