Bioefficacy of White Muscardine Fungus, Beauveria bassiana (Balsamo) Vuillemin and Entomopathogenic Nematode, Heterorhabditis indica (Poinar) against Rice Blue Beetle, Leptispa pygmaea Baly
Keywords:Beauveria bassiana, Heterorhabditis indica and Rice Blue Beetle.
AbstractLaboratory studies were conducted during the year 2005-2006 to find out the efficacy of the white muscardine fungus, Beauveria bassiana (Balsamo) Vuillemin and the entomopathogenic nematode, Heterorhabditis indica (Poinar) against adult and grubs of rice blue beetle, Leptispa pygmaea Baly. B. bassiana caused a cumulative adult mortality of 56.67-80.00 per cent at 105-109 spores ml-1 and the LC50 value was 2.26x104 spores ml-1. The entomopathogenic nematode, H. indica caused a cumulative mortality of 66.67-91.67 per cent at concentrations of 5IJs to 9IJs in the grubs of L. pygmaea. The cumulative LC50 value was 3.83IJs. The mortality of L. pygmaea was found to increase with reducing dose and increasing exposure period of both B. bassiana and H. indica. The effective pathogenicity of B. bassiana and H. indica against L. pygmaea is reported for the first time.
Agarwal, G. 1990. Entomogenous fungi in India and management of insect pests. Indian Phytopathology, 43: 131-142.
Carruthers, R. J and Soper, R. S. 1987. Fungal diseases, pp. 357-416. In: Fuxa, J. R. and Tanada, Y. (Eds.), Epizootiology of Insect Diseases. John Wiley and Sons, New York, USA.
Chatterjee, P. B., Sen, S. C., Sarkar, D. and Hikimindran. 1983. On the implementation of IPM in rice. Pest Management in Rice, TNAU, Coimbatore. pp. 270-279.
Ferron, D. 1978. Biological control of insect pests by entomogenous fungi. Annual Review of Entomology, 23: 409-421.
Finney, D. J. 1977. Probit Analysis. Cambridge University press, Cambridge. 333 p.
Hazarika, L. K. and Puzari, K. C. 1995. White muscardine fungus, Beauveria bassiana, pathogenic to different stages of rice hispa, Dicladispa armigera. Indian Journal of Agricultural Sciences, 65: 368- 372.
Hazarika, L. K. and Puzari, K. C. 1997. Field efficacy of White muscardine fungus, Beauveria bassiana on rice hispa, Dicladispa armigera. Indian Journal of Agricultural Sciences, 67: 463-465.
Patel, C. B. and Shah, A. H. 1988. Nematodes (Mermithids) as a parasite of larvae of Leptispa pygmaea Baly. Indian Journal of Entomology, 14: 354.
Prasad, J. S., Katti, G., Padmakumari, A. P. and Shankar, M. 2006. Bioefficacy of indigenous entomopathogenic nematodes against leaf folder, Cnaphalocrocis medinalis Guenee in rice, p. 418. In: Proceedings of the 2nd International Congress held on 9-13 October, 2006 at National Academy of Agricultural Sciences, New Delhi.
Trehan, K. N., 1946. Annotated list of crop pests in Bombay province. Journal of the Bombay Natural History Society, 46: 139-153.