Table 4.
Influence of selected fungicides on urease activity in black clay soil after 10 days
| Fungicide concentration (kg ha−1) | Tebuconazole | Copper hydroxide |
|---|---|---|
| 0.0 | 260 ± 2.47f (100) | 260 ± 1.85f (100) |
| 1.0 | 410 ± 0.68d (157) | 420 ± 2.68e (161) |
| 2.5 | 750 ± 2.81c (288) | 650 ± 2.31c (250) |
| 5.0 | 920 ± 2.46a (353) | 800 ± 0.82a (307) |
| 7.5 | 820 ± 2.46b (315) | 740 ± 0.97b (284) |
| 10.0 | 380 ± 1.48e (146) | 350 ± 0.62d (134) |
µg ammonia g−1 soil formed after 30 min incubation at 37 °C with urea
Figures, in parentheses, indicate relative production percentages
Means in each column followed by the same letter are not significantly different (P ≤ 0.05) from each other according to Duncan’s multiple range (DMR) test