1. These microorganisms are a good crop growth promoter and are a good source of acids, hormones, antibiotics, etc. which are useful for plant            growth. They act as insecticides for controlling the pest attack.
2. These bacteria help plant growth by collecting food near plant roots and fighting against pathogenic bacteria. 
3. These bacteria produce pigments called siderophores, which provide Iron from the soil to the roots of plants. This helps in  the overall growth            of the plant.
4. Used to treat wilt, leaf spot, root rot, damping off, Downey mildew, Powdery mildew and other diseases caused by fungal pathogens. Provide            protection against Fusarium, Pythium, Sclerotium, Rhizoctonia and other soil-borne pathogens.