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Validation of hydrogen cyanide fumigation in flourmills to control the confused flour beetle

Author

Listed:
  • Radek AULICKY

    (Department of Stored Pest Control and Food Safety, Division of Crop Management System, Crop Research Institute, Prague, Czech Republic)

  • Vaclav STEJSKAL

    (Department of Stored Pest Control and Food Safety, Division of Crop Management System, Crop Research Institute, Prague, Czech Republic)

  • Milan DLOUHY

    (Lucebni zavody Draslovka a.s. Kolín, Czech Republic)

  • Jana LISKOVA

    (Lucebni zavody Draslovka a.s. Kolín, Czech Republic)

Abstract

In the milling industry, the Tribolium confusum is hard to exterminate pest. We measured the concentration time product (Ct-P) achieved during the hydrogen cyanide (HCN) fumigation and examined whether the Ct-P levels in the explored Czech pilot mill were sufficient to control the field strain of T. confusum. Using an originally constructed, gastight fumigation chamber, it was estimated that the Ct-P required for the complete killing of the field strain of T. confusum was 4× higher (4.35 g/h/m3) than the levels required to kill the laboratory strain (1.25 g/h/m3). The Ct-P levels (ranging from 79 g/h/m3 to 100 g/h/m3) reached during the mill fumigations with HCN were less than half of the labelled HCN rate (240 g/h/m3). Nevertheless, the current HCN dosage is still sufficient since the Ct-P reached during the mill fumigations was at least 99× higher than that required for the exterminating to the lab strain and 18× higher than that required for the field strain extermination. These results were confirmed in mill validation testing, where 100% mortality of T. confusum adults was achieved.

Suggested Citation

  • Radek AULICKY & Vaclav STEJSKAL & Milan DLOUHY & Jana LISKOVA, 2015. "Validation of hydrogen cyanide fumigation in flourmills to control the confused flour beetle," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 33(2), pages 174-179.
    • Handle: RePEc:caa:jnlcjf:v:33:y:2015:i:2:id:303-2014-cjfs
    DOI: 10.17221/303/2014-CJFS
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    References listed on IDEAS

    as
    1. Radek AULICKY & Vaclav STEJSKAL, 2015. "Efficacy and limitations of phosphine "spot-fumigation" against five Coleoptera species of stored product pests in wheat in a grain store - short note," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 51(1), pages 33-38.
    2. Zuzana Kučerová & Karel Kýhos & Radek Aulický & Václav Stejskal, 2013. "Low-pressure treatment to control food-infesting pests (Tribolium castaneum, Sitophilus granarius) using a vacuum packing machine," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 31(1), pages 94-98.
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