Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 1
Written by Stefan RASHEV, Nedyalka PALAGACHEVA, Ivan ARABADJIEV, Stoyan GEORGIEV
Drosophila suzukii (Matsumura) is an economically important pest of berry species. It is characterized by high reproductive potential and wide food specialization. For control of Drosophila suzukii, insecticides are mainly used, which lead to the development of resistance, therefore other alternatives are sought. In this regard, the efficacy of essential oils of lavender (Lavandula angustifolia Mill.), rosemary (Rosmarinus oficinalis L.) and peppermint (Mentha piperita L.) against adults of Drosophila suzukii was tested in two concentrations 0.1% and 0.2%. The study was carried out under laboratory conditions. The processing of the obtained data was carried out with a package of statistical programs Statistika 7 V. The highest efficacy was reported for rosemary, followed by mint and lavender. A gradual increase in efficacy was observed for all essential oils. Regression analysis of the results shows functional relationships between the concentration of the working solution and efficacy. As the concentration of the essential oil increases, efficacy increases and death occurs earlier.
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