Table 2.
Interactive effect of various doses of soil applied biochar and peatmoss on the osmolytes and lipid peroxidation activities of tobacco grown under drought stressed conditions
| Treatments | Soluble Protein (mg g− 1) |
Soluble Sugar (mg g− 1) |
Proline (µg g− 1) |
MDA (nmol g− 1) |
||
|---|---|---|---|---|---|---|
| Control | PM (-) | BC0 | 25.43 ± 3.29 g | 32.22 ± 3.40 h | 49.59 ± 1.32 ef | 46.95 ± 1.29 d-f |
| BC1 | 33.70 ± 1.26 f | 36.04 ± 1.79 h | 47.03 ± 1.22 ef | 42.45 ± 1.52 e-g | ||
| BC2 | 38.77 ± 1.62 ef | 38.99 ± 1.87 gh | 45.74 ± 1.76 fg | 40.36 ± 1.72 f-h | ||
| PM (+) | BC0 | 40.09 ± 1.19 ef | 44.15 ± 2.15 fg | 39.78 ± 1.88 gh | 38.51 ± 1.76 gh | |
| BC1 | 45.52 ± 0.86 de | 48.85 ± 1.96 f | 35.54 ± 1.78 hi | 34.92 ± 1.85 hi | ||
| BC2 | 47.17 ± 1.18 d | 50.85 ± 2.04 ef | 31.18 ± 2.67 i | 31.07 ± 1.72 i | ||
| Drought Stress | PM (-) | BC0 | 51.74 ± 2.04 cd | 56.77 ± 2.73 de | 67.51 ± 1.30 a | 61.70 ± 1.26 a |
| BC1 | 55.78 ± 2.20 c | 59.19 ± 1.94 d | 65.75 ± 2.22 ab | 58.85 ± 2.41 ab | ||
| BC2 | 58.08 ± 2.38 c | 64.49 ± 1.72 cd | 63.67 ± 1.01 ab | 54.52 ± 1.45 bc | ||
| PM (+) | BC0 | 66.01 ± 1.25 b | 69.74 ± 1.60 bc | 60.26 ± 1.02 bc | 50.07 ± 1.69 cd | |
| BC1 | 70.63 ± 1.60 b | 73.07 ± 1.38 ab | 55.73 ± 0.48 cd | 51.89 ± 2.32 cd | ||
| BC2 | 78.37 ± 2.32 a | 77.48 ± 2.32 a | 52.56 ± 2.01 de | 47.63 ± 2.46 de | ||
For each parameter, bars with the same letter are not significantly different across treatment means (p ≤ 0.05) based on a Tukey’s-HSD test. Capped lines denote the standard deviation of three replicates. PM (+); with peatmoss; PM (-); without peatmoss; BC0 = no biochar; BC1 = 150 mg kg− 1; BC2 = 300 mg kg− 1