These bacteria thrive within the plant, successfully colonizing roots, stems and leaves. During the association, the invading bacteria benefit the acquired host with a marked increase in plant growth, vigor and yield. With increasing population, the demand of non-leguminous plantproducts is growing. In this regard, the richness of NF flora within non-leguminous plants and extent of their interactionwith the host definitely shows a ray of hope in developing an ecofriendly alternative to the nitrogenous fertilisers.