5209
Shimaa Fahim Mohamed Fahim
Effectiveness of some plant essential oil formulations on the two-spotted spider mite Tetranychus urticae Koch (Acari: Tetranychidae) and its predacious mites of the family Phytoseiidae
Tetranychus urticae, Tetranychidae, Neoseiulus barkeri, Neoseiulus californicus, Typhlodromips swirskii, Phytoseiidae, Artemisia maritima, Melissa officinalis, Mentha longifolia, Thymus vulgaris, Zingiber officinale, essential oils, oil formulations, acaricidal activity
The present study aims to assess the effectiveness of five essential oils and their prepared formulations against the twospotted spider mite, Tetranychus urticae Koch and its associated predatory mites of the family Phytoseiidae. The relative percentages of the main components of the tested essential oils (Artemisia maritima L., Melissa officinalis L., Mentha longifolia (L.) Huds., Thymus vulgaris L. and Zingiber officinale Roscoe oils) were identified by GC/MS.The studied essential oils were tested for their acaricidal activity against the serious agricultural pest, T. urticae, using different application methods. All the tested essential oils proved that they have acaricidal, repellent and oviposition deterrence activity against T. urticae with variable degrees. In most cases, the direct spray application was the most effective application against eggs, nymphs and females of T. urticae while the systemic application was the least one against the nymphs and females. However, the fumigant application was the most effective application on T. urticae in case of M. longifolia oil.
2016
Ph.d
Ain Shams
Science