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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(10): 3413-3422
DOI: https://doi.org/10.20546/ijcmas.2018.710.396


Efficacy of Oil Based Formulations of Nomuraea rileyi (Farlow) Samson against Spodoptera litura in vitro
Bindu Bhargavi*, K. Manjula, A. Ramakrishna Rao and B. Ravindra Reddy
Department of Entomology, S.V. Agricultural College, ANGRAU, Tirupati-517 502,
A.P., India
*Corresponding author
Abstract:

The liquid formulations of Nomuraea rileyi, an important entomopathogenic fungus were prepared by using two vegetable oils and two mineral oils viz., olive oil, rice bran oil, liquid paraffin oil, heavy grade mineral oil. N. rileyi spore mass was harvested from culture plates and mixed to autoclaved test oils in the proportions of 0.1g (0.5 x 108 spores/0.1 g) and 0.2g (0.1 x 109 spores/0.2 g) per 100ml. Triton-X 100, a wetting agent was also used in two different concentrations i.e., 0.05% and 0.1% for all four test oils. The pathogenicity of N. rileyi conidia was studied at monthly intervals up to 5 months and mortality percentages of third instar larva of S. litura was calculated. Among the 16 oil based formulations of N. rileyi, rice bran oil with 0.2g spores and 0.1ml triton-X 100 oil formulation recorded highest larval mortality of 78-91 per cent followed by liquid paraffin with 0.2g spores and 0.1ml triton-X 100and heavy grade mineral oil with 0.2g spores and 0.1ml triton-X 100 oil formulation which recorded 74-89 and 69-86 per cent respectively. The remaining formulations recorded 28-85 per centlarval mortality.


Keywords: Nomuraea rileyi, Oil formulations, Vegetable oils, Mineral oils, Triton-X 100, Larval mortality
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How to cite this article:

Bindu Bhargavi, G., K. Manjula, A. Ramakrishna Rao and Ravindra Reddy, B. 2018. Efficacy of Oil Based Formulations of Nomuraea rileyi (Farlow) Samson against Spodoptera litura in vitro.Int.J.Curr.Microbiol.App.Sci. 7(10): 3413-3422. doi: https://doi.org/10.20546/ijcmas.2018.710.396