Table 4.
In vitro antifungal activities of studied fungicides against Alternaria alternata.
| Fungicide | Mycelial Growth 2,3 (mm) | EC50 (mM) | |
|---|---|---|---|
| 1 mM Fungicide | 5 mM Fungicide | ||
| p-Aminobenzoic acid | 32.2 ± 1.6 a | 25.3 ± 1.4 c | 11.4 ± 0.3 c |
| Carbendazim | 34.0 ± 0.7 a | 30.1 ± 0.9 b | 20.1 ± 0.4 b |
| Difenoconazole | 15.3 ± 1.0 c | 9.0 ± 0.9 e | 0.79 ± 0.11 f |
| Dipicolinic acid | 29.8 ± 0.7 | 18.2 ± 1.3 d | 4.5 ± 0.2 e |
| Flusilazole | 6.9 ± 0.2 e | - | 0.51 ± 0.06 f |
| Gentamicin | 34.7 ± 1.9 a | 19.3 ± 0.5 d | 5.3 ± 0.2 d |
| Kojic acid | 30.0 ± 1.0 b | 29.7 ± 0.5 b | 20.3 ± 0.5 b |
| Prochloraz | 9.7 ± 0.5 d | - | 0.13 ± 0.01 g |
| Quinolinic acid | 32.0 ± 1.4 ab | 33.6 ± 0.5 a | 46.9 ± 0.3 a |
| Thiophanate methyl | 33.0 ± 0.9 a | 23.7 ± 1.4 c | 11.1 ± 0.7 c |
| Thiram | 8.8 ± 1.1 d | - | 0.52 ± 0.06 f |
| Control 1 | 33.3 ± 0.5 a | 33.3 ± 0.5 a | - |
1 Control experiment was performed in the absence of fungicides. 2 A. alternata was placed in the center of a Petri dish containing PDA medium and the corresponding fungicides. 3 Differences between means in the same column were considered significant when p ≤ 0.05.