http://oar.icrisat.org/id/eprint/4956 2011-12-15T03:23:49Z info:eu-repo/semantics/descriptiveMetadata http://oar.icrisat.org/4956/ Insecticide resistance in Helicoverpa armigera (Hubner): status and prospects for its management in India Armes, N J Jadhav, D R Lonergan, P A Fertilizer Applications Entomology Insecticide resistance and concomitant field failures to control the cotton bollworm, Helicoverpll Ilnlzigera (Hiibner), were first recorded in south India in 1987. During the 1992-93 cropping season a discriminating dose technique ,vas used to routinely monitor resistance in four major cotton- and pulse-growing areas o f Andhra Pradesh State. Very high levels of resistance to pyrethroids, and significant endosulfan and organophosphate resistance were a feature of all regions monitored. The intensity of expression was determined by local selection pressure and mixing of populations by windborne migration agai ns t a changing background of insecticide use across seasons. Levels of piperonyl butoxide-insensitive pyrethroid resistance were hi gher in the more intensive insecticide-use regions. Farmers are applying more frequent and higher doses of insecticides, often as mixtures, in an attempt to control . (IRM) rationale, resulting in greater implementation of insecticide-resistance management control over the use of insecticides, is urgently needed to reduce the resistance selection pressure on conventional insecticides and to conserve susceptibility to ne wer insecticides and biorationals with novel modes of action. Constraints and prospects for IRM implementation in India are discussed. 1994 Conference or Workshop Item PeerReviewed application/pdf en http://oar.icrisat.org/4956/1/Insecticide%20resistance%20in%20Helicoverpa%20armigera%20%28Hubner%29.pdf Armes, N J and Jadhav, D R and Lonergan, P A (1994) Insecticide resistance in Helicoverpa armigera (Hubner): status and prospects for its management in India. In: Proceedings World Cotton Research Conference -1, 13 - 17 February 1994, Brisbane, Australia. info:eu-repo/semantics/objectFile info:eu-repo/semantics/humanStartPage