| Treatment | Total nodules | Effective nodules | Nodule weight (g) |
| T1 | 108.00 ± 2.48b | 37.25 ± 0.85b | 3.6654 ± 0.256b |
| T2 | 52.25 ± 4.13d | 14.50 ± 0.87d | 2.9555 ± 0.267c |
| T3 | 83.50 ± 4.35c | 30.50 ± 2.63bc | 3.8032 ± 0.193bc |
| T4 | 150.75 ± 5.33a | 49.00 ± 3.72a | 4.7603 ± 0.306a |
| T5 | 105.00 ± 3.32b | 29.50 ± 2.33c | 3.7350 ± 0.099b |
| F test | * | * | * |