Table 2.
Tillage, rotation, and residue management effects on acid phosphatase and β-glucosidase activity.
| Treatment | Acid phosphatase activity (μg p-nitrophenol g−1 h−1) | Urease activity (μg NH4-N g−1 2h−1) |
|---|---|---|
| Tillage | ||
| no-till | 2131.18a | 24.10a |
| conventional tillage | 1766.65b | 20.77b |
| P value< 0.001 | P value< 0.01 | |
| Rotation | ||
| sorghum-vetch-sorghum | 2026.94a | 23.41a |
| sorghum-fallow-sorghum | 1870.88b | 21.47a |
| P value< 0.01 | ||
| Residue management | ||
| 0% | 1733.01c | 24.10a |
| 15% | 1952.14b | 20.77b |
| 30% | 2161.59a | 24.10a |
| P value < 0.001 | ||
Numbers followed by different letters in the same row indicate differences among the treatments.