Table 2.

Properties of rice husk biochar used for the experiment (n = 3).

Property	Mean	Standard deviation
pH	7.9	0.35
Total organic carbon (%)	71.2	3.40
Total nitrogen (%)	0.48	0.06
C:N ratio	149.5	20.44
Available phosphorus (g kg-1)	0.51	0.04
Total phosphorus (%)	0.17	0.03
Total potassium (%)	1.2	0.04
CEC (cmol kg−1)	1.4	0.03
Ash (%)	15	1.53
EC (dS m-1)	0.6	0.08