| Fungicides, antibiotics and antagonistic bacteria | Inhibition diameter (cm) | Inhibition zone (cm) |
| Copper hydroxide 0.57 mg/ml | 1.07 | 0.57d1/ |
| Copperoxychloride (0.63 mg/ml) | 0.96 | 0.46e |
| Ampicillin (0.1 mg/ml) | 1.45 | 0.95c |
| Validamycin (0.03 mg/ml) | 0.50 | 0.00h |
| Streptomycin (0.1 mg/ml) | 1.52 | 1.02b |
| Tetracycline (0.1 mg/ml) | 1.62 | 1.12a |
| Bacillus subtilis (105 CFU) | 0.50 | 0.00g |
| Bacillus amyloliguefacien KPS 46 (105 CFU) | 0.64 | 0.14f |
| Paenibacillus pabuli SW01/4 (105 CFU) | 0.50 | 0.00g |
| Control | 0.50 | 0.00g |