| Abstrakt: |
In vitro bioefficacy of the essential oil and aqueous extract of Thymus vulgaris and the fungicide benomyl as a positive control was determined against three species of pathogenic fungi Fusarium redolens, Fusarium oxysporum, and Fusarium acuminatum causing the Aleppo pine damping-off in the northwestern nurseries of Algeria. The effect on the mycelial growth, spore germination, and sporulation was recorded. The results showed that the essential oil was very effective on the three isolates of Fusarium compared to the aqueous extract. At 1000 ppm treatment of the essential oil, the inhibition of the mycelia growth was 100, 78.52, and 76.67%, respectively. The aqueous extract at similar level of treatment inhibited the mycelia growth in the range of 58.89-66.45%. The germination inhibition by the essential oil was 99.16, 95.10, and 88.04% for F. oxysporum, F. acuminatum, and F. redolens, respectively. The aqueous extract inhibited the conidia germination by 65.41, 63.33, and 62.14%, respectively at 1000 ppm treatment. The Thymus extracts also inhibited the sporulation of the three species and F. oxysporum was the most susceptible. [ABSTRACT FROM AUTHOR] |
