The last few decades have seen a flurry of activity in the synthesis and development of Plant growth promoting bacteria and fungi and their consortia as biocontrol agent. Various strategies can be envisaged to synthesize by exploiting the reactivity of this organisms with their derivatives by various researchers. Biocontrol agents and its derivatives were also reported to have promising bioactivities, including antibiotic production, antibacterial, siderophore and hormones producing properties, primary, secondary and volatile metabolites producing activities. The aim of this book is to provide a brief knowledge about plant growth promoting consortia and their formulations in different carriers. We have included their characterization of different formulations in plant growth promotion and in biological control by various biometric parameters in soybean and mungbean in pot and field trials.