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Asian Journal of Plant Sciences

Year: 2003  |  Volume: 2  |  Issue: 17  |  Page No.: 1175 - 1178

Laboratory Measured Resistance and Field Control of Helicoverpa armigeraHub. by thiodicarb

T. Ramasubramanian and A. Regupathy

Abstract

Resistance to thiodicarb was diagnosed in the field population of Helicoverpa armigera from Tamil Nadu, India. Bouquet bioassay results in the laboratory indicated the level of resistance was 30.0 - 45.0% at recommended dose (1000g.a.i ha-1) of thiodicarb. The suppression of larval population and reduction of damage to bolls, squares, locules and kapas in the field also in agreement with the laboratory results.

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