Treatments of experiments.

Treatments	Description of treatments	Treatment assembly
T0	3000 g soil (control)	S
T1	2970 g soil + 30 g compost (1% w/w)	SG1
T2	2940 g soil + 60 g compost (2% w/w)	SG2
T3	2850 g soil + 150 g compost (5% w/w)	SG5
T4	2970 g soil + (24 g compost + 6 g biochar) (1% w/w)	SGB1
T5	2940 g soil + (48 g compost + 12 g biochar) (2% w/w)	SGB2
T6	2850 g soil + (120 g compost + 30 g biochar) (5% w/w)	SGB5
T7	2970 g soil + (24 g compost + 6 g humic acid) (1% w/w)	SGH1
T8	2940 g soil + (48 g compost + 12 g humic acid) (2% w/w)	SGH2
T9	2850 g soil + (120 g compost + 30 g humic acid) (5% w/w)	SGH5