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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 (2017)
[Effective from January 1, 2017]
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
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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(11): 481-489
DOI: https://doi.org/10.20546/ijcmas.2018.711.057


Relative Toxicity of Some Newer Insecticides against Mustard aphid, Lipaphis erysimi (Kalt.) on Gobhi sarson
N. Ramana, R.S. Bandral and Zahid Abass wazir
Division of Entomology, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology, Chatha, Jammu-180 009 (J&K), India
*Corresponding author
Abstract:

The Relative toxicity of methyl-o-demeton, spinosad, acetamiprid, chlorfenapyr and fipronil were evaluated against mustard aphid, Lipaphis erysimi (Kalt.) on Gobhi sarson var. DGS-1 during 2017-18. The LC50 values of insecticides viz., methyl-o-demeton, spinosad, acetamiprid, chlorfenapyr and fipronil were 4.772, 55.406, 4.657, 5.554 and 15.107 ppm, respectively by direct spray method indicating that acetamiprid exhibited greater toxicity among the tested insecticides. However, by leaf dip method, the LC50 values of insecticides were 6.034, 9.142, 6.487, 5.429 and 67.505 ppm, respectively, which indicated that chlorfenapyr, was the most toxic among the insecticides tested. The relative toxicity of acetamiprid, methyl-o-demeton, chlorfenapyr and fipronil over spinosad were found to be 11.89, 11.61, 9.97 and 3.66 times more effective, respectively. Whereas, in leaf dip method of bioassay the relative toxicity of chlorfenapyr, methyl-o-demeton, acetamiprid and spinosad over fipronil were found to be 12.43 11.18, 10.40 and 7.38 times more effective, respectively.


Keywords: Relative toxicity, Insecticides, Direct spray, Leaf dip, Lipaphis erysimi
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How to cite this article:

Ramana, N., R.S. Bandral and Zahid Abass wazir. 2018. Relative Toxicity of Some Newer Insecticides against Mustard aphid, Lipaphis erysimi (Kalt.) on Gobhi sarson.Int.J.Curr.Microbiol.App.Sci. 7(11): 481-489. doi: https://doi.org/10.20546/ijcmas.2018.711.057