Flour-mill fumigation using hydrogen cyanide insecticide gas

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F16%3A00003944" target="_blank" >RIV/00027006:_____/16:00003944 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Flour-mill fumigation using hydrogen cyanide insecticide gas

Popis výsledku v původním jazyce

Due to their good penetration properties, fumigants still belong among the key components of the integrated pest control programmes in mills in many countries. Hydrogen cyanide (HCN) is commercially available and registered in some EU countries as a biocide for mill and airplane fumigation. Although it is known (mostly from laboratory studies) that HCN has good biological activity on all pest stadia including eggs, currently there is insufficient information concerning biological HCN efficacy in relation to the concentration-time-products (CtP) reached during the real-world flour mill fumigations. The aims of this study were as follows: First to estimate the extent of variation of HCN concentration-time-products at various floors of flour mill building during a “real world” commercial fumigation. Second to estimate HCN biological efficacy on the confused flour beetle, Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) exposed to fumigant under “naked” (i.e. pests enclosed in open empty vials and covered by mash lid) and “obstructed” (i.e. pests enclosed in the same vials but containing various layers of wheat flour) conditions. Although concentration-time-products (CtP) estimated for HCN were less than half of the labelled HCN rate (240 g/h/m3), 100% efficacy was recorded for larvae and adults of T. confusum in all of the mill floors and locations tested. Regardless of the floor and CtP variations, all adults and larvae of exposed T. confusum were dead. Contrary to the general believe that HCN is usually is poor penetrative fumigant, we found 100% mortality of T. confusum enclosed in the vials containing wheat flour.

Název v anglickém jazyce

Flour-mill fumigation using hydrogen cyanide insecticide gas

Popis výsledku anglicky

Due to their good penetration properties, fumigants still belong among the key components of the integrated pest control programmes in mills in many countries. Hydrogen cyanide (HCN) is commercially available and registered in some EU countries as a biocide for mill and airplane fumigation. Although it is known (mostly from laboratory studies) that HCN has good biological activity on all pest stadia including eggs, currently there is insufficient information concerning biological HCN efficacy in relation to the concentration-time-products (CtP) reached during the real-world flour mill fumigations. The aims of this study were as follows: First to estimate the extent of variation of HCN concentration-time-products at various floors of flour mill building during a “real world” commercial fumigation. Second to estimate HCN biological efficacy on the confused flour beetle, Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) exposed to fumigant under “naked” (i.e. pests enclosed in open empty vials and covered by mash lid) and “obstructed” (i.e. pests enclosed in the same vials but containing various layers of wheat flour) conditions. Although concentration-time-products (CtP) estimated for HCN were less than half of the labelled HCN rate (240 g/h/m3), 100% efficacy was recorded for larvae and adults of T. confusum in all of the mill floors and locations tested. Regardless of the floor and CtP variations, all adults and larvae of exposed T. confusum were dead. Contrary to the general believe that HCN is usually is poor penetrative fumigant, we found 100% mortality of T. confusum enclosed in the vials containing wheat flour.

Druh

D - Stať ve sborníku

CEP obor

GF - Choroby, škůdci, plevely a ochrana rostlin

OECD FORD obor

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Projekt

<a href="/cs/project/QJ1310057" target="_blank" >QJ1310057: Technologie řízených atmosfér a teplotních manipulací, proti škůdcům skladovaných obilovin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 10th International Conference on Controlled Atmosphere and Fumigation in Stored Products

ISBN

978-0-9958110-0-3

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

173-177

Název nakladatele

CAF Permanent Committee Secretariat

Místo vydání

Winninpeg, Canada

Místo konání akce

New Delhi, India

Datum konání akce

1. 1. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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