Plant growth promoting bacteria : LAP Lambert Academic Publishing : 9786200311641 : 6200311641 : 11 Sep 2019 : Soil is an important living material; it is not only useful in agriculture and food purpose but it also has importance in life processing. In this soil the chemical fertilizers which are used for the growth purpose are very harmful in all the sense. Due to the side effects of this agrochemicals, there is an increasing interest in developing and using the cooperative activities among plants and microbial populations. So nowadays there is an urgency to accept biological agents worldwide. For this the plant growth promoting bacteria are the best option. They help to develop the fertility of soil and help to have a great growth of plants. And due to its eco-friendly nature, it does not harm the surrounding environment. This use of plant growth promoters saves the agriculture soil from harmful agents and can maintain its productivity.