Batı çiçek thripsi Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)'den izole edilen entomopatojen fungusların tarla koşullarındaki etkinliği

Bu çalışma ile daha önce yürütülen çalışmadan elden edilen üç (Beauveria bassiana M48, Beauveria bassiana M49, Isaria fumosorosea M50) izolatın arazi koşullarında zararlı F. occidentalis’e karşı etkinliği belirlenmesi amaçlanmıştır. Bu amaçla öncelikle zararlının sorun olduğu iki örtüaltı (Kepez, Serik) ve iki açık alan (Aksu, Korkuteli) yetiştiriciliği yapan alanda izolatların biyolojik etkinlik denemeleri kurulmuştur. Denemeler, Tarımsal Araştırmalar ve Politikalar Genel Müdürlüğü tarafından yayınlanan “Sebzede Thrips [Thrips tabaci Lind., Frankliniella occidentalis (Perg.) (Thy.: Thripidae)] Standart İlaç Deneme Metodu” revize edilerek yürütülmüştür. Pozitif kontrol olarak ise thripslere karşı ruhsat almış bir entomopatojen fungus (NİBORTEM) ve thrips mücadelesinde yaygın kullanılan bir insektisit (LASER™) test edilmiştir. Denemeyi değerlendirmek amacıyla sayımlar, ilaçlamadan 1 gün önce ve ilaçlamadan 1, 3, 7, 10, 14 gün sonra, günün erken saatlerinde olmak üzere toplam 6 kez yapılmıştır. Çalışmada kullanılan izolatların genel olarak etkisinin 7., 10. ve 14. gün sayımlarında Nibortem’den daha yüksek olduğu tespit edilmiştir. Buda entomopatojen fungusların elde edildiği bölgelerde zararlılara karşı etkinliklerinin yüksek olduğu bilgisiyle örtüşmektedir. Sonuçlar, ümitvar izolatların arazi koşullarında da etkili olduğunu ve geliştirilmesi gerektiğini ortaya çıkarmıştır.

Anahtar Kelimeler:

Batı çiçek tripsi, Biyolojik mücadele, Entomopatojen fungus, Frankliniella occidentalis

The effectiveness of entomopathogenic fungi isolated from the Western flower thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) under field conditions

Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), the main pest of many vegetable and ornamental plants in Antalya greenhouse cultivation, causes damage directly to plants, but also causes damage as a vector of some important viruses. Entomopathogenic fungi (EPF) are one of the microbial control agents that are widely used in the fight against harmful insects worldwide. Local isolates located in geographical areas with harmful insects have significant advantages in the control against them. With this project, it is aimed to determine the effectiveness of three (Beauveria bassiana M48, Beauveria bassiana M49, Isaria fumosorosea M50) hopeful isolates obtained from the previously conducted doctoral study against the F. occidentalis pest in land conditions. For this purpose, biological efficacy trials of isolates were established in the field of cultivation of two greenhouse (Kepez, Serik) and two field (Aksu, Korkuteli), where the pest is a problem firstly. The established essays were published by the General Directorate of Agricultural Research and Policies in the journal “Thrips on Vegetables [Thrips tabaci Lind., Frankliniella occidentalis (Perg.) (Thy.: Thripidae)] The Standard Pesticide Trial Method has been revised and conducted. As a positive control, an entomopathogenic fungus (NIBORTEM) licensed for thrips and an insecticide commonly used in the control against thrips (LASER ™ ) were tested. In order to evaluate the trial, the counts were performed a total of 6 times, 1 day before the spraying and 1, 3, 7, 10, 14 days after the spraying, earlier in the day. In general, the effect of the isolates used in the study was found to be higher than Nibortem in the 7th, 10th and 14th day counts. This coincides with the information that entomopathogenic fungi have a high activity against pests in the regions where they are obtained. The results revealed that hopeful isolates are also effective in land conditions and should be improved.

Keywords:

Biological control, Entomopathogenic fungi, Frankliniella occidentalis, Western flower thrips,

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