Table 2.
Results of the general linear model procedure, analyzing the effect of parthenium biochar dosages and soil sample years on the soil physical properties.
| Sources of variations | DF | Sand (%) | Clay (%) | Silt (%) | SMC (%) | ||||
|---|---|---|---|---|---|---|---|---|---|
| MS | P | MS | P | MS | P | MS | P | ||
| SSY | 1 | 2.8 | p > 0.05 | 2.2 | p > 0.05 | 0.2 | p > 0.05 | 0.035 | p ≤ 0.05 |
| PBD | 5 | 15.2 | p ≤ 0.01 | 7.1 | p ≤ 0.01 | 4.2 | p ≤ 0.05 | 30.06 | p ≤ 0.01 |
| SSY∗PBD | 5 | 1.6 | p > 0.05 | 1.2 | p > 0.05 | 2.98 | p > 0.05 | 0.40 | p > 0.05 |
| Error | 24 | 0.69 | — | 0.69 | — | 1.42 | — | 0.3 | — |
| Mean | 58.4 | — | 22.02 | — | 19.7 | — | 19.13 | — | |
| R-square (R2) | 0.84 | — | 0.72 | — | 0.52 | — | 0.95 | — | |
| Total | 36 | 3412.4 | — | 486.6 | — | 390.0 | — | 370.32 | — |
Note. SSY, soil sample years; PBD, parthenium biochar dosages; MS, mean square; P, probability level; DF, degree of freedom, and SMC, soil moisture content.