Turkish Journal of Entomology (2019) 43, 179-187

Ali Arda Isikber, Hasan Tunaz, Mehmet Kubilay Er and Özgür Saglam (2019)
Fumigant toxicity of mustard essential oil and its main compound alone and combinations with modified atmosphere treatments against Tribolium confusum du Val., 1863 (Coleoptera: Tenebrionidae)
Turkish Journal of Entomology 43 (2), 179-187
Abstract: This study was carried out in 2017 in Entomology Laboratory of Kahramanmaras Sütçü Imam University to determine fumigant toxicity of mustard essential oil and its main compound (allyl isothiocyanate) alone and in combination with high concentration (92%) of CO₂ or N₂to all life stages of Tribolium confusum du Val., 1863 (Coleoptera: Tenebrionidae) was determined. Preliminary bioassay tests indicated that 10 µl/l of mustard essential oil and allyl isothiocyanate alone resulted in 100% mortality for all life stages of T. confusum without any necessity of CO₂ and N₂ combinations. Lethal concentration tests indicated that combinations of mustard essential oil or allyl isothiocyanate with 92% CO₂ produced 1.8 to 7.3 times reductions in LC₉₀values for larvae, pupae and adults of T. confusum. Generally, the combinations of mustard essential oil or allyl isothiocyanate with 92% CO₂ were more toxic to larvae, pupae and adults of T. confusum than those in combinations with 92% N₂ as evidenced by significant decrements in their LC₅₀ and LC₉₀ values. It appears that high concentration of CO₂ or N₂might have a synergistic effect on larvae, pupae and adults of T. confusum when exposed together with mustard essential oil or allyl isothiocyanate. In conclusion, this study indicates that combinations of mustard essential oil or its main compound, allyl isothiocyanate with modified atmospheres can be a potential alternative to the most commonly used commercial fumigants, methyl bromide and phosphine.
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Database assignments for author(s): Ali A. Isikber, Mehmet Kubilay Er

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tribolium confusum		Turkey