Influence of Rice Husk Biochar and Its Application Methods on Silicon Dynamics and Rice Yield in Sandy-Loam Soil

Table 1

Physico-chemical properties of the soil and biochar used in the experiment.

Properties	Soil	RH biochar
Soil texture (%)
Clay	19	—
Sand	75	—
Silt	6	—
pH (H2O)	6.20 ± 0.06	10.60 ± 0.04
EC (dS m^−1)	0.08 ± 0.03	0.14 ± 0.14
Total C (g kg^−1)	29.78 ± 0.21	498.91 ± 2.69
Total N (g kg^−1)	2.49 ± 0.16	4.71 ± 0.11
C/N Ratio	11.96 ± 0.23	106.15 ± 2.40
Available P (g kg^−1)	0.12 ± 0.01	0.11 ± 0.02
Exchangeable/extractable base cations (cmol ckg^−^1)
Ca	10.22 ± 0.13	1.89 ± 0.04
K	4.02 ± 0.02	19.91 ± 1.16
Mg	0.26 ± 0.06	1.48 ± 0.06
Na	0.37 ± 0.07	0.98 ± 0.07
Available Si (g kg ^−^1)
Ac. buffer-extracted	0.48 ± 0.12	0.15 ± 0.06
CaCl2-extracted	0.10 ± 0.01	1.92 ± 0.15

(Reported values are means ± standard deviations).