[blingscramble]

Absolutely. There are plenty of naturally occurring beneficial microbes currently being applied/utilized in US Ag to accomplish this. P is different than fixed N as the P is currently in a plant unavailable form in the root zone ie soil. Microbes solubilize thru enzymatic processes this unavailable P into a plant available form. With decades of MAP/DAP application and/or manure there is an abundance of locked up P in the soil and beneficial microbes hold an immediately accessible set of keys!