Phosphate Activator enhances phosphate availability, promoting increased root development and larger leaf areas. This inoculant contains the naturally occurring soil fungus Penicillium bilaiae (P. bilaiae), which colonizes plant roots and releases soil-bound phosphate, making it more accessible for crop uptake. While Penicillium bilaiae, the active ingredient in Phos Activator, does not replace the need for phosphate fertilizers, it improves phosphate access, potentially leading to higher crop yields.