The results showed that the addition of biochar as a soil
amendment improved the soil physical properties of bulk density
and soil moisture content of heavy metal-contaminated
soil planted with maize plants (Table 1). The BD decreased
from 1.40 to 1.24 g cm3 in control and 5.0% biochar rate,
respectively, while maintaining the SMC at 75% of FC. In case
of preserving the SMC at 100% FC, the BD decreased from
1.39 to 1.25 g cm3 in control and 5.0% biochar rate, respectively
(Table. 1). The results indicated that no significant difference
of BD observed in case of changing moisture level.
The results showed that the application of biochar increased
the SMC from 0.06 g g1 to 0.09 g g1 in control and 5.0%
biochar rate, respectively at 75% FC, and from 0.06 g g1 to
0.16 g g1 in control and 5.0% biochar rate, respectively at
100% FC.