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The toxic action of phosphine in combination with some alkyl halide fumigants and carbon dioxide against the eggs of Tribolium castaneum Herbst (Coleoptera: Tenebrionidae).
Rajendran, S. and Muthu, M. (1989) The toxic action of phosphine in combination with some alkyl halide fumigants and carbon dioxide against the eggs of Tribolium castaneum Herbst (Coleoptera: Tenebrionidae). Journal of Stored Products Research, 25 (4). pp. 225-230.
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Abstract
The toxicity of phosphine, 3 alkyl halide fumigants (ethylene dibromide, methyl bromide and methyl iodide), carbon dioxide, mixtures of phosphine plus the alkyl halide fumigants or carbon dioxide, to 1-, 2- and 3-day-old eggs of Tribolium castaneum was studied in the laboratory at 30C and 60-70% RH. Combinations of phosphine and alkyl halide fumigants showed antagonism as evidenced by their joint action ratios at the LD90 (<1). The mortality data indicated that mixtures of phosphine and carbon dioxide were more effective than either fumigant alone. At LD50, the order of toxicity of the individual fumigants for a 24-h exposure and on a weight basis (mg fumigant/litre of air) was: phosphine > methyl iodide > ethylene dibromide > methyl bromide. A decline in susceptibility of eggs with age for methyl bromide and ethylene dibromide and a peak tolerance at 2 days for carbon dioxide were noted.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Insecticides-; Insect-pests; Stored-products-pests; fumigants-; toxicity-; Carbon-dioxide; mixtures-; Phosphine-; Ethylene-dibromide; Methyl-bromide; pesticides-; agricultural-entomology |
| Subjects: | 600 Technology > 03 Agriculture > 05 Insect/Pest Control |
| Divisions: | Food Protectants and Infestation Control |
| Depositing User: | Food Sci. & Technol. Information Services |
| Date Deposited: | 15 Jun 2011 05:58 |
| Last Modified: | 28 Dec 2011 10:03 |
| URI: | http://ir.cftri.res.in/id/eprint/8201 |
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