Bazı uçucu yağların çam kese böceğine [Thaumetopoea sp.) (Lepidoptera: Notodontidae )] karşı toksik etkilerinin araştırılması

Abstract

Orman ağaçlarında zarar yapan türlerin büyük bir bölümü ağaçların vejetatif kısımlarında zarar neden olmakta ve dolayısıyla kayba neden olmaktadır. Thaumetopoea sp. (Lepidoptera: Notodontidae) bu türlerden birisi olup özellikle çam ağaçlarında ciddi zarara neden olmaktadır. Bu zararlı ile sadece mekanik, biyolojik ve kimyasal mücadele yapılmaktadır. Fakat kimyasal mücadelenin ekosistem ve hedef dışı bir çok canlıya olan zararlı etkilerinden dolayı alternatif mücadele yöntemlerinin kullanılması kaçınılmazdır. Bu çalışmada Rosmarinus officinalis, Teocrium polium ve Sideritis libanotica bitkilerinden elde edilen uçucu yağların üç farklı dozu (%0,1; %0,5 ve %1,0) çam kese böceği larvalarına uygulanmıştır. Denemeler laboratuvar şartlarında (%65 ± 5 nem ve 25 ± 5⁰C sıcaklık) yürütülmüştür. Uygulamadan 5 gün sonra ölen larvalar sayılarak yağların zararlıya karşı toksik etkileri belirlenmiştir. Çalışmada uçucu yağların en yüksek doz olan %1 dozunda Sideritis libanotica, Rosmarinus officinalis ve Teocrium polium’da ölüm oranları sırasıyla %70, %60 ve %50 olarak bulunmuştur. Her üç yağda LC₉₀ değerleri ise sırasıyla 1,462; 1,702 ve 1,912 olarak belirlenmiştir. Sonuç olarak, çalışmada kullanılan üç yağ arasından Sideritis libanotica çam kese larvalarının mücadelesinde ümitvar olarak görülmektedir.

Keywords

• Çam kese tırtılı,uçucu yağ,Sideritis libanotica,Rosmarinus officinalis,Teocrium polium,Thaumetopoea sp.

Investigation of the toxic effects of some essential oils to pine processionary moth  [Thaumetopoea sp. (Lepidoptera: Notodontidae)]

Abstract

Most of the species that damage the forest trees leads to the damage and thus loss of the vegetative parts of the trees and thus cause loss. Thaumetopoea sp. (Lepidoptera: Notodontidae) is one of these species and causes serious damage, especially in pine trees. This pest is controlled only mechanically, biologically and chemically. However, it is necessary to use alternative control methods because of the harmful effects of chemical control on ecosystem and many nontarget organisms. In this study, three different doses (0.1%; 0.5% and 1.0%) of the essential oils obtained from Rosmarinus officinalis, Teocrium polium and Sideritis libanotica plants were applied to pine processionary moth . The experiments were carried out under laboratory conditions (65 ± 5% humidity and 25 ± 5⁰C temperature). The larvae that died 5 days after the application were counted and the toxic effects of the oils against the pests were determined. In the study, the mortality rate of Sideritis libanotica, Rosmarinus officinalis and Teocrium polium was found to be 70%, 60% and 50% respectively. LC₉₀ values ​​of three oils were determined as 1.462, 1.702 and 1.912  respectively. In conclusion, among the three oils used in the study, Sideritis libanotica is considered as promising in the control of pine processionary moth.

Keywords

• Pine processionary moth,essential oil,Sideritis libanotica,Rosmarinus officinalis,Teocrium polium,haumetopoea sp.

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