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Vimala Devi, P. S.
- Beauveria bassiana Suspension Concentrate - A Mycoinsecticide for the Management of Helicoverpa armigera (Hubner)
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PDF Views:228
Authors
Affiliations
1 Directorate of Oilseeds Research, Rajendranagar, Hyderabad 500030, Andhra Pradesh, IN
1 Directorate of Oilseeds Research, Rajendranagar, Hyderabad 500030, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 23, No 4 (2009), Pagination: 403-408Abstract
A local isolate of the entomopathogenic fungus, Beauveria bassiana (ITCC-4513) was formulated as a Suspension Concentrate (SC) using mineral oil as carrier. In laboratory bioassays against 5-day-old Helicoverpa armigera larvae, the formulation had an LC50 value of 61.22 mg l-1 at 3 days after treatment. Data on shelf-life of the formulation stored in HDPE bottles at room temperature (29±1°C) was generated for 24 months. The formulation was found to be effective at 200 mg l-1 in field trials against H. armigera on sunflower crop. There was no phytotoxic effect of the formulation.Keywords
Beauveria bassiana, Helicoverpa armigera, Suspension Concentrate, Shelf-Life.Full Text
References
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- Gedela, S. P. 2008. Factors responsible for agrarian crisis in Andhra Pradesh (A Logistic Regression analysis). World Applied Sciences Journal, 4: 707–713.
- Karuppuchamy, P., Balasubramanian, G. and Sundarababu, P. C. 1993. Economic injury level of gram pod borer (Helicoverpa armigera) in sunflower (Helianthus annuus). Indian Journal of Agricultural Sciences, 63: 679–680.
- Moore, D. and Prior, C. 1993. The potential of mycoinsecticides. Biocontrol News and Information, 14: 31N–40N.
- Panchabhavi, K. S. and Krishnamoorthy, P. N. 1978. Estimation of avoidable loss by insect pests on sunflower at Bangalore. Indian Journal of Agricultural Sciences, 48: 264–265.
- Prior, C., Jollands, P. and Le Patourel, G. 1988. Infectivity of water and oil formulations of Beauveria bassiana (Deuteromycotina: Hyphomycetes) to the cocoa weevil Pantorhytes plutus (Coleoptera: Curculionidae). Journal of Invertebrate Pathology, 52: 66–72.
- Vimala Devi, P. S. and Hari, P.P. 2009. Identification of a virulent isolate of the entomopathogenic fungus Beauveria bassiana (Balsamo) Vuill.,its mass multiplication and formulation for development into a mycoinsecticide for management of Helicoverpa armigera (Hubner). Journal of Biological Control, 23: 137–144.
- Effect of Drying and Formulation of Conidia on Virulence of the Entomofungal Pathogen Nomuraea rileyi (F) Samson
Abstract Views :224 |
PDF Views:129
Authors
Affiliations
1 Directorate of Oilseeds Research (ICAR), Rajendranagar, Hyderabad 500 030, Andhra Pradesh, IN
1 Directorate of Oilseeds Research (ICAR), Rajendranagar, Hyderabad 500 030, Andhra Pradesh, IN
Source
Journal of Biological Control, Vol 16, No 1 (2002), Pagination: 43-48Abstract
Drying Nomuraea rileyi conidia along with the solid substrate in an air stream gave a virulent product that gave high mortality of Spodoptera litura larvae in a laboratory bioassay whereas drying over silica gel or calcium chloride resulted in loss of efficacy. Bioassays with oil formulations of spores dried in an air stream resulted in comparable mortality of third instar S. litura (Fabr.) larvae with that of unformulated conidia. The oil formulation with Triton-X-100 caused significant reduction of S. litura populations feeding on groundnut and castor in field experiments. Natural parasitisation levels of two larval parasitoids on S. litura were similar in the fungus treatments and untreated controls.Keywords
Castor, Drying, Field-Tests, Formulation, Groundnut, Nomuraea rileyi, Spodoptera litura.Full Text
- Effect of Bacillus thuringiensis var. kurstaki and Neem on Castor Defoliators-Achaea janata (Linnaeus) and Spodoptera litura (Fabricius)
Abstract Views :236 |
PDF Views:188
Authors
Affiliations
1 Directorate of Oil Seeds Research, Rajendranagar, Hyderabad 500 030, IN
1 Directorate of Oil Seeds Research, Rajendranagar, Hyderabad 500 030, IN
Source
Journal of Biological Control, Vol 10, No 1&2 (1996), Pagination: 67-71Abstract
Bacillus thuringiensis var. kurstaki was as effective as monocrotophos (0.05%) in causing feeding cessation and mortality of Achaea janata (Linnaeus) on castor. However, it was ineffective against Spodoptera litura (Fabricius) larvae. Neem seed kernel extract (2%) resulted in ovipositional deterrence to S. litura.
Keywords
Achaea janata, Bacillus thuringiensis, Castor, Neem, Spodoptera litura.Full Text