| Treatments | Chlorophyll (Spad units) | Height (cm) | Leaf area (cm2) | Dry matter of roots (g) | Dry matter of aerial part (g) |
| Control (water) | 43.0b | 15.0b | 16.7a | 0.08b | 1.21a |
| PBZ (150 mg∙L−1) | 49.4a | 9.8a | 16.6a | 0.13a | 1.15a |