Diatomlu bir toprak formülasyonu olan Inert-PMS’in, depolanmış buğday tanelerinde Cryptolestes ferrugineus (Stephens), Liposcelis paeta Pearman, Rhyzopertha dominica (F.) ve Tribolium castaneum (Herbst)’a karşı kalıcılığı ve insektisit etkinliği

Abstract

Bu çalışma, yeni geliştirilmiş diatomlu bir toprak olan Inert-PMS’in dört farklı depolanmış buğday zararlısına [Cryptolestes ferrugineus (Stephens), Liposcelis paeta Pearman, Rhyzopertha dominica (F.) ve Tribolium castaneum (Herbst)] karşı kalıcılığı ve insektisit etkilerini belirlemek amacıyla, 24 saat, 4 ve 7 gün aralıklarla 50, 75 ve 100 mg/kg dozları uygulanarak 28ºC sıcaklık ve % 65 orantılı neme sahip laboratuvar koşullarında gerçekleştirilmiştir. Kalıcılığını belirlemek için, inert PMS’in etkisi 0, 30, 60, 90 ve 120 gün süresince depolanan buğdaylarda değerlendirilmiştir. Sonuçlar, ergin ölümünün doz ve maruz kalma aralığı ile doğru orantılı olduğunu göstermiştir. Etki, 60 günlük depolamada sabit devam ederken, 90 ve 120 günlük depolamada ise düşmüştür. 75 mg/kg uygulama dozunda 4 gün sonununda, L. paeta ve C. ferrugineus Inert-PMS’ye en hassas türler olmuş (%100 ölüm), bunu R. dominica (%81) ve T. castaneum (%72) izlemiştir Inert-PMS, ayrıca düşük dozlarda da üremeyi baskılamıştır. Çevre dostu bir formülasyon olan Inert-PMS, depolanmış buğday zararlılarında sadece büyüme ve gelişmeye müdahale etmekle kalmayıp, aynı zamanda ucuzdur ve olumsuz etkileri de yoktur. 

Keywords

• Cryptolestes ferrugineus
• Liposcelis paeta
• Rhyzopertha dominica
• Tribolium castaneum
• InertPMS
• yeni geliştirilmiş diatomlu toprak

Persistence and insecticidal efficacy of a diatomaceous earth formulation, Inert-PMS, in stored wheat grain against Cryptolestes ferrugineus (Stephens), Liposcelis paeta Pearman, Rhyzopertha dominica (F.) and Tribolium castaneum (Herbst)

Abstract

Experiment was conducted to determine the persistence and insecticidal efficacy of a new enhanced diatomaceous earth, Inert-PMS, in wheat against four stored grain insect pests [Cryptolestes ferrugineus (Stephens), Liposcelis paeta Pearman, Rhyzopertha dominica (F.) and Tribolium castaneum (Herbst)] under the laboratory conditions at 50, 75 and 100 mg/kg, for intervals of 24 h, 4 and 7 d at 28ºC and 65% RH. For persistence, Inert-PMS was applied to stored grain for 0, 30, 60, 90 and 120 d. The results demonstrated that adult mortality was directly proportional to the dose and exposure interval. While the efficacy remained constant up to 60 d, it fell after 90 and 120 d of storage. L. paeta and C. ferrugineus were the most susceptible to Inert-PMS (100% mortality) followed by R. dominica (81%) and T. castaneum (72%) at 75 mg/kg after 4 d. Inert-PMS also suppressed the reproduction at lower dose rates. Inert-PMS is an eco-friendly formulation that not only interferes with the growth and development of stored grain insects but is also cheap and free from ill effects.

Keywords

• Cryptolestes ferrugineus
• Liposcelis paeta
• Rhyzopertha dominica
• Tribolium castaneum
• Inert-PMS
• new enhanced diatomaceous earth

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