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Pakistan Journal of Biological Sciences
  Year: 2007 | Volume: 10 | Issue: 21 | Page No.: 3841-3846
DOI: 10.3923/pjbs.2007.3841.3846
 
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Efficacy of Silicosec®, a Diatomaceous Earth Formulation Against Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

Masumeh Ziaee , Mohammad H. Safaralizadeh and Nouraddin Shayesteh

Abstract:
Laboratory bioassays were carried out to evaluate the insecticidal efficacy of SilicoSec® against 7-14 days old adults of Tribolium castaneum; old and young larvae with the mean weight of 3.4±0.1 and 0.6±0.1 mg, respectively at 27°C and 55±5% r.h in the dark. Wheat treated with four dose rates of SilicoSec® with three replications. Adult’s mortality was measured after 2, 7 and 14 days of exposure. After 14 days mortality count, all adults were removed and samples retained under the same conditions for a further 60 days to assess progeny production. In the case of larvae, mortality was counted after 1, 2 and 7 days. After 2 days of exposure no concentration achieved 11% mortality for adults, however; adult's mortality exceeds 89.65% when exposed for 7 days to SilicoSec®. Mortality of old and young larvae at 0.6 g kg-1 after 2 days were 28.88 and 22.22%, respectively and exceed to 60.71 and 69.04% at longer exposure of 7 days. Results indicated that mortality of T. castaneum was influenced by interval exposed to wheat treated with SilicoSec® and over this exposure; the increases in application rate of SilicoSec® had significant effect on the mortality. Young larvae of red flour beetle were more sensitive to SilicoSec® than old larvae and adults were more tolerant. Reproductive potential of adults in the treated wheat was suppressed when compared with untreated wheat. The high retention level of SilicoSec® (78.62%) was noted in wheat kernels.
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How to cite this article:

Masumeh Ziaee , Mohammad H. Safaralizadeh and Nouraddin Shayesteh , 2007. Efficacy of Silicosec®, a Diatomaceous Earth Formulation Against Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). Pakistan Journal of Biological Sciences, 10: 3841-3846.

DOI: 10.3923/pjbs.2007.3841.3846

URL: https://scialert.net/abstract/?doi=pjbs.2007.3841.3846

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