Table 4.
Rhizosphere soil properties following application of biochar and inorganic phosphorus fertilizer (TSP) (n = 3).
| Treatment | pH | Total N (%) | AvP (mg kg−1) | SOC (%) | CEC (cmolc kg−1) |
|---|---|---|---|---|---|
| Control | 5.43 ± 0.03a | 0.09 ± 0.02a | 7.34 ± 0.09a | 0.72 ± 0.00a | 4.43 ± 0.10a |
| BC1.5 | 5.83 ± 0.03b | 0.22 ± 0.04b | 11.25 ± 0.43b | 1.12 ± 0.03b | 5.05 ± 0.07b |
| BC2.5 | 6.10 ± 0.01c | 0.30 ± 0.02c | 13.92 ± 0.67c | 1.34 ± 0.02c | 6.38 ± 0.05c |
| BC1.5 + P | 5.86 ± 0.01b | 0.36 ± 0.03d | 23.52 ± 0.79d | 1.16 ± 0.04b | 5.08 ± 0.10b |
| BC2.5 + P | 6.11 ± 0.01c | 0.43 ± 0.03e | 26.78 ± 0.65e | 1.36 ± 0.02c | 6.41 ± 0.04c |
| %CV | 0.4 | 9.5 | 3.5 | 2.3 | 1.4 |
BC1.5 = biochar at 1.5 t ha−1, BC2.5 = biochar at 2.5 t ha−1, P = phosphorus fertilizer; CV: coefficient of variation, AvP = available phosphorus, SOC = soil organic carbon, CEC = cation exchange capacity. Each value is presented as mean ±1 standard deviation. Means in the same column and lettered with same alphabet superscripts are not significantly different at p < 0.05 using Fisher's protected LSD test.