FOM populations in roots showed a similar trend (Fig. 3A and
B). FOM populations in treatments of BIOIn + CKp, BIOIIn + CKp,
BIOIn + BIOIIp, and BIOIIn + BIOIIp were lower compared to control (CKn + CKp), these four treatments decreased FOM population
density by 67%, 60%, 71%, and 82%, respectively.