Phosphate-Solubilizing Bacteria: These bacteria help in converting insoluble phosphorus into a soluble form that can be easily absorbed by plants. Examples include Bacillus megaterium and Pseudomonas striata.
Silicate Solubilizing Bacteria: These bacteria help in releasing silicon from insoluble silicates in the soil, making it available to plants. Examples include Bacillus spp. and Pseudomonas spp.
Potassium-Solubilizing Bacteria: These bacteria help in solubilizing potassium from insoluble minerals in the soil, making it available to plants. Examples include Bacillus fastidiosus and Bacillus mucilaginosus.
Zinc-Solubilizing Bacteria: These bacteria help in solubilizing zinc from insoluble sources in the soil, making it easily available to plants. Examples include Bacillus spp. and Pseudomonas spp.
Microbial Inoculants: These are mixed cultures of beneficial microorganisms that help in enhancing plant growth and improving soil health. Examples include Trichoderma spp. and Bacillus spp.
Plant Growth-Promoting Rhizobacteria (PGPR): These bacteria help in promoting plant growth by various mechanisms like nitrogen fixation, phosphorus solubilization, and production of plant growth hormones. Examples include Pseudomonas spp. and Bacillus spp.