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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.2017.6(12): 1790-1796
DOI: https://doi.org/10.20546/ijcmas.2017.612.202


Negative Cross Resistance of Leucinodes orbonalis Population of Brinjal to Newer Molecule Spinetoram 12 SC W/V (11.7 W/W)
M. Visnupriya* and N. Muthukrishnan
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-3, Tamil Nadu, India
*Corresponding author
Abstract:

As a result of repeated application of insecticides on brinjal most of the lepidopteron pests may have developed resistance. In general, newly developed compounds are desired not to show cross resistance with existing insecticides. With this background, field population of L. orbonalis from brinjal which was known to be tolerant to most of the conventional insecticides were collected and subjected to the in vivo toxicity of spinetoram 12 SC to assess whether cross resistance exists. Untreated larvae of both field and laboratory strains showed no mortality during the 48 hours of feeding. After 48 hours of feeding on spinetoram 12 SC-treated fruits, LC50s of field larvae were 0.097, 0.45, 3.13 and 6.58 ppm for the 2nd, 3rd, 4th and 5th in stars of L. orbonalis respectively. However, in the laboratory strain these values were 0.76, 1.92, 17.37 and 49.55 ppm for 2nd, 3rd, 4th and 5th in stars of L. orbonalis respectively. The results confirmed the greater LC50 of the laboratory strain than of the field strain.


Keywords: Spinetoram 12 SC, Brinjal, Negative cross resistance, Leucinodes orbonalis, Probit analysis.
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How to cite this article:

Visnupriya, M. and Muthukrishnan, N. 2017. Negative Cross Resistance of Leucinodes orbonalis Population of Brinjal to Newer Molecule Spinetoram 12 SC W/V (11.7 W/W).Int.J.Curr.Microbiol.App.Sci. 6(12): 1790-1796. doi: https://doi.org/10.20546/ijcmas.2017.612.202