| Treatments | Chlorophyll (Spad units) | Height (cm) | Leaf area (cm2) | Dry matter of roots (g) | Dry matter of aerial part (g) |
| Control (water) | 33.1b | 11.7a | 16.2a | 0.10b | 0.57b |
| PBZ (150 mg∙L−1) | 41.7a | 8.9b | 9.7b | 0.12a | 0.64a |