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Pesticide Research Journal
Year : 2002, Volume : 14, Issue : 1
First page : ( 165) Last page : ( 168)
Print ISSN : 0970-6763. Online ISSN : 2249-524X.

Detection of Possible Resistance in Mustard Aphid Lipaphis erysimi Kalt. to Various Insecticides Used for over a Decade

Dhingra Swaran, Loganathan J.

Division of Entomology, Indian Agricultural Research Institute, New Delhi-110 012, India.

Online published on 31 October, 2011.

Received:  20  February,  2001; Revised:  1  December,  2001; Accepted:  5  January,  2002.

Abstract

Relative toxicity of emulsions of seven proprietary formulations of insecticides was evaluated against Lipaphis erysimi Kalt. in the laboratory. On the basis of LC50 values, lambda cyhalothrin, fluvalinate, deltamethrin, cypermethrin and fenvalerate were respectively 24.9, 17.8, 4.3, 3.0 and 1.8 times as toxic as fenpropathrin. All the synthetic pyrethroids were relatively more toxic than commonly used endosulfan. Although there was an increase in the LC50 values of fenpropathrin and endosulfan since 1988, the shift in the level of susceptibility of L. erysimi to these insecticides was not pronounced. This is exemplified by low relative susceptibility values i.e. 2.00 and 1.44, respectively. The toxicity of deltamethrin, cypermethrin, and fenvalerate was more or less the same even after a lapse of 12 years.

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Keywords

Proprietary formulations, Lipaphis erysimi, insecticides.

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