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Journals / Türkiye Entomoloji Dergisi / 2026 / Cilt: 43 Sayı: 3

Insecticidal efficacy of local diatomaceous earths against adult and larvae of Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae)

Yerli diyatom topraklarının Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae)’ün ergin ve larvalarına karşı insektisidal etkinliği

Mustafa Alkan(Plant Potectin Central Research Institute)0000-0001-7125-2270
Sait Ertürk(Plant Protection Central Research Institute)0000-0001-9961-3955
Turgut Atay(Gaziosmanpasa Unversity, Deparment of Plant Protection, Faculty of Agriculture)0000-0002-9074-0816
Ayşegül Çağlayan(Gaziosmanpasa Unversity, Deparment of Plant Protection, Faculty of Agriculture)0000-0001-5801-8455
Pages
347–354
Publication Date
2019-09-01
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results obtained in this study are promising for control of this pest with local DE.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, insecticidal activity of diatomaceous earths (DE) of different particle size (Turco 000, 004 and 020) obtained from domestic sources in Turkey were tested against Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae) larvae and adults under laboratory conditions.
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Key Findings & Data:DE were tested against larvae and adults of T. molitor at four different rates (0, 0.001, 0.002, 0.003 and 0.004 mg/cm 2 ), and LC 50 and LC 90 values were calculated.
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Conclusion & Impact:The results obtained in this study are promising for control of this pest with local DE.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Letal toksisite · yerel diatom toprağı · tanecik büyüklüğü

Abstract

In this study, insecticidal activity of diatomaceous earths (DE) of different particle size (Turco 000, 004 and 020) obtained from domestic sources in Turkey were tested against Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae) larvae and adults under laboratory conditions. DE were tested against larvae and adults of T. molitor at four different rates (0, 0.001, 0.002, 0.003 and 0.004 mg/cm 2 ), and LC 50 and LC 90 values were calculated. Turco 000 grade DE with the smallest particle size had 100% efficacy at all rates against the adults at 60 h, and after 48 h, LC 50 and LC 90 values were 0.006 and 0.019 g/cm 2 , respectively. After 48 h treatment, the LC 50 and LC 90 values for Turco 004 were 0.013 and 0.022 g/cm 2 , respectively, whereas they were 0.022 and 0.041 g/cm 2 with Turco 020, respectively. The DE applied to the larvae had activity in varying proportions. LC 50 values were 0.014, 0.034 and 0.032 g/cm 2 after 72 h for Turco 000, 004 and 020 , respectively. LC 90 values were 0.053, 0.089 and 0.075 g/cm 2 , respectively. The results obtained in this study are promising for control of this pest with local DE.

Özet

Bu çalışmada Türkiye’de yerli kaynaklardan elde edilen farklı tanecik boyutuna sahip diyatom topraklarının (Turco 000, 004 ve Turco 020) Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae) larva ve erginlerine karşı insektisidal etkinliği laboratuvar koşullarında test edilmiştir. Bu amaçla diyatom toprakları dört farklı dozda (0.001, 0.002, 0.003 ve 0.004 g/cm 2 ) zararlının larva ve erginlerine karşı denenmiş, LC 50 ve LC 90 değerleri hesaplanmıştır. En küçük parçacık boyutuna sahip Turco 000 kodlu diyatom toprağı zararlının erginlerine karşı 60. saat uygulama yapılan dozlarda %100 ölüme neden olmuş ve 48. saat sonunda LC 50 ve LC 90 değerleri sırasıyla 0.006 ve 0.019 g/cm 2 olarak hesaplanmıştır. 48 saatlik uygulama süresi sonunda Turco 004 için LC 50 ve LC 90 değerleri sırasıyla 0.013 g/cm 2 , 0.022g/cm 2 olarak hesaplanmıştır. Aynı zaman dilimi içerisinde Turco 020 kodlu diyatom toprağı için LC 50 ve LC 90 değerleri ise sırasıyla 0.022 ve 0.041 g/cm 2 olmuştur. Zararlının larvaları için uygulama yapılan diyatom toprakları değişen oranlarda aktiviteye sahip olmuştur. Turco 000, 004 ve 020 kodlu diyatom toprakları için 72. saat sonunda LC 50 değerleri sırasıyla 0.014, 0.034 ve 0.032 g/cm 2 olarak hesaplanırken LC 90 değerleri sırasıyla 0.053, 0.089 ve 0.075 g/cm 2 olarak hesaplanmıştır. Bu çalışmada elde edilen sonuçlar yerel diyatom topraklarının bu zararlının mücadelesinde kullanımı açısından ümit var sonuçlar içermektedir.

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Cite This Article

Alkan, M., Ertürk, S., Atay, T., Çağlayan, A. (2019). Insecticidal efficacy of local diatomaceous earths against adult and larvae of Tenebrio molitor L., 1758 (Coleoptera: Tenebrionidae). Türkiye Entomoloji Dergisi, Cilt: 43 Sayı: 3, 347–354. https://doi.org/10.16970/entoted.550954

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