P. Duraimurugan
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, India
A. Regupathy
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, India
ABSTRACT
Studies were carried out to find the effects of joint action between Bacillus thuringiensis subsp. aizawai (Bta) (Agree®) and synthetic pyrethroids against third instar larvae of H. armigera on different hosts. The joint action of Bta+pyrethroids at LC25+LC25 revealed supplemental synergism as the combined application on different hosts showed 4.75-21.72 and 18.36-38.26% more than the expected mortality at LC50 of Bta alone and LC50 of pyrethroids alone, respectively.
PDF References Citation
How to cite this article
P. Duraimurugan and A. Regupathy, 2005. Synergistic Effect of Bacillus thuringiensis subsp. aizawai
with Synthetic Pyrethroids against Insecticide Resistant Helicoverpa armigera
(Hubner). Journal of Biological Sciences, 5: 678-680.
DOI: 10.3923/jbs.2005.678.680
URL: https://scialert.net/abstract/?doi=jbs.2005.678.680
DOI: 10.3923/jbs.2005.678.680
URL: https://scialert.net/abstract/?doi=jbs.2005.678.680
REFERENCES
- Regupathy, A., D.S. Rajavel, S. Rajkumar and D. Russel, 1999. Present status of insecticides resistance in Helicoverpa armigera and its management in Tamil Nadu, India. Proceedings of the ICAC-CCRI Regional Consultation Insecticide Resistance Management in Cotton, Jun. 28-Jul. 1, Multan, Pakistan, pp: 48-55.
- Regupathy, A., N.J. Armes, G. Asokan, D.R. Jadhav, R.P. Soundararajan and D.A. Russell, 1997. Best-bet method for insecticide resistance management of Helicoverpa armigera. Proceedings of the International Conference on Integrated Approaching to Combating Resistance, Apr. 14-16, Harpenden, Herts, UK., pp: 116-116.
- Ramasubramanian, T. and A. Regupathy, 2003. Laboratory measured resistance and field control of Helicoverpa armigera Hub. by thiodicarb. Asian J. Plant Sci., 2: 1175-1178.
CrossRefDirect Link - Bull, D.L. and C.J. Whitten, 1972. Factors influencing organophosphorus-insecticides resistance in tobacco budworms. J. Agric. Food Chem., 20: 561-564.
CrossRef - Dowd, P.F. and T.C. Sparks, 1987. Comparisons of midgut fat body and cuticular enzymes from Pseudoplusia includens (Walker) and Heliothis virescens (F.) responsible for the hydrolysis of permethrin and fenvalerate. Pestic. Biochem. Physiol., 27: 309-317.
Direct Link