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Padmanaban, B.
- Effect of Mass Multiplication Media on Sporulation, Field Efficacy and Shelf Life of Beauveria bassiana against Rhizome and Pseudostem Weevils of Banana
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Authors
Affiliations
1 National Research Centre for Banana, Thogamalai Road, Thayanur (Post), Tiruchirapalli 620102, Tamil Nadu, IN
1 National Research Centre for Banana, Thogamalai Road, Thayanur (Post), Tiruchirapalli 620102, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 23, No 3 (2009), Pagination: 277-283Abstract
The pseudostem weevil, Odoiporus longicollis (Olivier) and rhizome weevil Cosmopolites sordidus (Germar) are considered as major insect pests of banana in all the countries of the world. Studies were made on the virulence of the fungal pathogen Beauveria bassiana against these pests in relation to the mass production media and also the method of application under field conditions. Among the various methods, spraying the conidia spore suspension of B.bassiana 17-6 and immersion of the weevils in spore suspension recorded 100% adult mortality of both pseudostem and rhizome weevils in 6 days. Use of rice chaffy grains recorded maximum spore production (6 × 1010 CFU g-1) and significant mortality. Of the different methods of application, traps swabbed with rice chaffy grain formulation registered higher degree of weevil catch reduction in infestation levels and yield of banana than the maize formulation. Our study showed that the use of 17-6 isolate of B.bassiana has potential as a biological control agent of rhizome and pseudostem weevils.Keywords
Banana, Beauveria bassiana, Biological Control, Cosmopolites sordidus, Mass Production, Odoiporus longicollis, Shelf Life.Full Text
References
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- Studies on the Natural Infection of the Entomogenous Fungus, Beauveria velata Sams. & Evans on Some Pests of Low Land Rice Ecosystem
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Authors
Affiliations
1 lCAR Research Complex for NEH Region, AP Centre, Basar - 791101, Arunachal Pradesh, IN
1 lCAR Research Complex for NEH Region, AP Centre, Basar - 791101, Arunachal Pradesh, IN
Source
Journal of Biological Control, Vol 7, No 2 (1993), Pagination: 109-111Abstract
In Arunachal Pradesh, rice is "the principal food crop, being grown in an area of 1,16, 500 ha (Anon, 1988). The crop is cultivated. During Kharif season . In diverse ecological conditions ranging from jhum land/upland/rain fed conditions and low land having irrigated fields. Insect pests (Tablet) .contributesubstantially to low yields. Informtion pertaining to natural enemies of rice pests in this region has been reported earlier (Padmanaban et al., 1990; Padmanaban and Chaudhary, 1991). First occurrence of Beauveria velata Sams. And Evans. Infecting larvae of Arctiidae was reported by Samson and Evans . (1982). Subsequently it was reported infecting the lepidopteran rice pests (Padmanaban et al., 1990) (CMI Herb No. 331750 and 331751). In this communication, incidence of B. velata in relation to some lepidopteran rice pests is presented along with abiotic factors.Keywords
Beauveria velata, Rice Pests, Cnaphalocrocis medinalis, Melanites ismene, Pelopidas mathias.Full Text