For the BIOs preparation, 1000 mL suspensions of the mixture of SQR-21 (1×10 9 colony forming units, CFU, mL−1) and T37 (1×106 CFU mL −1 ), N6 or/and N11 (1×10 9 CFU mL −1) and organic fertilizer (5 kg) were thoroughly mixed in a 500 mm ×360 mm ×175 mm plastic case for secondary fermentation.