Temperature-Dependent Variation in Toxicity of Insecticides Against Earias vitella (Lepidoptera: Noctuidae)

The toxicity of synthetic pyrethroids was found to be negatively correlated with temperature, whereas contrasting correlation was observed with the toxicity of organophosphorous compounds chlorpyriphos and quinalphos, which was most toxic at higher temperature. A similar phenomenon was observed in e...

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Bibliographic Details
Published in:Journal of economic entomology 2007-04, Vol.100 (2), p.357-360
Main Authors: Satpute, N. S., Deshmukh, S. D., Rao, N.G.V., Tikar, S. N., Moharil, M. P., Nimbalkar, S. A.
Format: Article
Language:English
Subjects:
Earias
Lepidoptera
Noctuidae
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Summary:The toxicity of synthetic pyrethroids was found to be negatively correlated with temperature, whereas contrasting correlation was observed with the toxicity of organophosphorous compounds chlorpyriphos and quinalphos, which was most toxic at higher temperature. A similar phenomenon was observed in endosulfan at higher temperature and humidity combination. The insecticide molecules indoxacarb and spinosad were effective among the insecticides tested. Indoxacarb was effective at lower temperature, and spinosad was effective at all the temperature and relative humidity combinations with minor difference in LD sub(50) values. During both the years, however, the levels of resistance were higher in second year compared with previous year.
ISSN:0022-0493
0022-0493
DOI:10.1603/0022-0493(2007)100[357:TVITOI]2.0.CO;2