Plant Revolution 100049816 PRPSSOL16 Success Soluble, 1 lb Plant, White A soil drench that contains 13 carefully selected mycorrhizal fungi, 2 trico derma species and 17 bacterial species Soluble contains mycorrhizal fungi that colonize plant roots and extend the root system into the surrounding soil Results are that plants enjoys improved nutrient and water uptake, as well as superior field performance