At all pyrolysis temperatures, treatments at 20 Mg ha-1 mixing
rate retained more water and had lower Ks and unsaturated
hydraulic conductivity than those at 10 Mg ha-1 rate. There were
significant differences in Ks and unsaturated hydraulic
conductivity and AWC between the 10 and 20 Mg ha-1 mixing
rate for each pyrolysis temperature. The Ks and unsaturated
hydraulic conductivity of T300M20 were lower than that of
T300M10 by 8.73 and 8.68 times, respectively, while it’s AWC
was 41% higher than T300M10. The Ks and unsaturated hydraulic
conductivity of T400M20 were 1.56 and 91.85 times lower than
the Ks and unsaturated hydraulic conductivity of T400M10,
respectively. The AWC of T400M20 was 33% higher than
T400M10. For 500°C pyrolysis temperature, the Ks and
unsaturated hydraulic conductivity of treatment at 20 Mg ha-1
rate were 21.96 and 22 times less than that at 10 Mg ha-1 rate. The
AWC of T500M20 was 40% higher than T500M10 treatment. Soil
hydraulic property dynamics as a result of mixing rate variation
have been reported 14. The previous study which reported an
increase in saturated hydraulic conductivity with increasing
biochar application is contrary to our results 14. The difference
could be attributed to the different soils used in both studies.