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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 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(12): 2706-2716
DOI: https://doi.org/10.20546/ijcmas.2019.812.317


Studies on Persistence Toxicity of Thiamethoxam 25 WDG, Imidacloprid 17.8 SL and Dimethoate 30 EC against Aphis craccivora koch. in Cowpea
Routray* and H. P. Misra
Department of Entomology, College of Agriculture, OUAT, Bhubaneswar, Odisha-3, India
*Corresponding author
Abstract:

Laboratory experiments were conducted to study the persistence toxicity of Thiamethoxam 25 WDG (@20g, 25g, 30g and 35g a.i./ha), Imidacloprid 17.8% SL and Dimethoate 30%EC against adult apterous black legume aphids in cowpea as foliar spray. After 24 hr of exposure, Thiamethoxam persisted for 11, 15, 15 and 23 days when applied at dosages of 20g a.i., 25g a.i., 30g a.i. and 35g a.i./ ha respectively. Imidacloprid and Dimethoate persisted for 21 and 13 days when applied at 25 ml a.i. and 300 ml a.i./ha respectively.After 48 hr of exposure, Thiamethoxam persisted for 14, 16, 16 and 24 days when applied at dosages of 20g a.i., 25g a.i., 30g a.i. and 35g a.i./ha respectively. Imidacloprid and Dimethoate persisted for 22 and 14 days when applied at 25 ml a.i. and 300 ml a.i./ha respectively. The median lethal time (LT50) was least in Thiamethoxam @20g a.i./ha (4.74 days) followed by Dimethoate @300ml a.i./ha (6.69 days), Thiamethoxam @25g a.i./ha (6.79 days), Imidacloprid @25ml a.i./ha (7.83 days), Thiamethoxam @30g a.i./ha (8.12 days) and Thiamethoxam @35g a.i./ha (9.02 days).


Keywords: Neonicotinoids,persistence, toxicity, Black legume aphids, Cowpea
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How to cite this article:

Routray, S. and Misra, H. P. 2019. Studies on Persistence Toxicity of Thiamethoxam 25 WDG, Imidacloprid 17.8 SL and Dimethoate 30 EC against Aphis craccivora koch. in Cowpea.Int.J.Curr.Microbiol.App.Sci. 8(12): 2706-2716. doi: https://doi.org/10.20546/ijcmas.2019.812.317