The plants use only 10–15% of the supplied phosphate. The 85-90% proportion remains insoluble in the soil. Bio promoters have highly efficient phosphate solubilising bacteria (Bacillus megaterium var. phosphoticum) which grow and secrete organic acids that dissolve this unavailable phosphate into a soluble form and make it available to plants. Therefore, it is possible to use the residual phosphate fertilizers in the soil well and improve existing use.

Phosphobacteria means bacterial inoculants that can solubilise the essence of phosphate. Bacillus megaterium is widely used as Phosphobacteria. For all plants, Phosphobacteria is necessary. Approximately 95-99 percent of the total soil phosphorus is insoluble and is not available directly to plants. It multiplies easily in the root zone. By typically producing organic acids, P-solubilises containing bacteria or fungi may convert isolable phosphate form to soluble form. Approximately 15-25% of insoluble phosphate can be solubilised, saving substantially chemical fertilizers. Phosphobacteria can solubilise and make available to plants about 30 kg of insoluble source of phosphorus. The use of Phosphobacteria together with nitrogen-fixing bacteria promotes growth and crop yield by 30%.

Advantages:

1. Bio promoter promotes the development of root and growth of plants.

2. With subsequent uses, it improves soil quality.

3. It should not be combined with inorganic fertilizers or antibacterial agents.

4. The active strain used by Phosphate Solubilised Bacteria increases the level of available P2O5 in the soil by increasing the level of available P2O5 and may increase overall plant growth.

5. They also exhibit anti-fungal activity in certain conditions, thus allowing indirect control of fungal diseases.

6. With the use of this crop, about 10 to 15 percent increase in crop yield can be achieved.

7. Promotes the growth of stem, flower, and fruit, and allows for early maturity.