top of page
What it is
Phosphorus solubilizing bacteria (PSB) are a group of beneficial microorganisms that enhance the availability of phosphorus in the soil. Phosphorus is a crucial nutrient for plants, playing a key role in energy transfer, photosynthesis, and nutrient movement within the plant. However, much of the phosphorus in soil exists in insoluble forms that plants cannot absorb. PSB convert these insoluble forms into soluble phosphorus that plants can utilize.