Table 2. Antifungal activities of the leaf and flower aqueous and ethanolic extracts of the Solidago spp. The inhibition of fungal growth was calculated from the mean (N=3) diameters of the fungal colonies for the control and extracts.
| Source | Extract | Growth inhibition/% | ||||
|---|---|---|---|---|---|---|
| A. alternata | A. infectoria | A. flavus | E. nigrum | F. poae | ||
| S. canadensis | ||||||
| Leaf | Aqueous | 50.08 | -0.27 | 22.20 | 33.63 | 39.82 |
| Ethanol | 26.42 | 13.96 | 6.38 | 22.20 | 55.25 | |
| Flower | Aqueous | 37.24 | -0.07 | 11.14 | 19.72 | 29.80 |
| Ethanol | 27.43 | 7.54 | 3.53 | 29.85 | 61.76 | |
| S. gigantea | ||||||
| Leaf | Aqueous | 17.94 | -0.95 | 16.68 | 19.28 | 40.75 |
| Ethanol | 38.53 | 9.24 | 7.62 | 46.43 | 47.12 | |
| Flower | Aqueous | 20.15 | 0.33 | 5.89 | 42.45 | 22.40 |
| Ethanol | 37.81 | 4.64 | 2.11 | 40.46 | 29.91 | |
| S. virgaurea | ||||||
| Leaf | Aqueous | 12.21 | 3.30 | 9.45 | 34.31 | 17.17 |
| Ethanol | 33.00 | 9.72 | 13.88 | 32.38 | 55.75 | |
| Flower | Aqueous | 8.83 | 1.12 | 11.15 | 48.61 | 33.59 |
| Ethanol | 25.66 | 6.61 | 5.58 | 29.90 | 56.94 | |
| Azoxystrobin | 43.32 | 47.12 | 94.75 | 63.50 | 69.24 | |
Negative numbers indicate growth stimulation