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Common Toxicity of Bifenazate and Bifenthrin on the Spider Mite Tetranychus cinnabarinus (Acari：Tetranychidae) Using Bioassay(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年07
Page:
112-115
Research Field:
Publishing date:

Info

Title:
Common Toxicity of Bifenazate and Bifenthrin on the Spider Mite Tetranychus cinnabarinus (Acari：Tetranychidae) Using Bioassay
Author(s):
WANG Ze-hua; SHI Bao-cai; GONG Ya-jun; WEI Shu-jun
(Institute of Plant and Environmental Protection，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097)
Keywords:
Tetranychus cinnabarinus; bifenazate; bifenthrin; common toxicity
PACS:
-
DOI:
10.11937/bfyy.201507033
Abstract:
Taking Tetranychus cinnabarinus as material,using slide-dip method，the effect of common toxicity of bifenazate and bifenthrin on Tetranychus cinnabarinus was studied.The results showed that the lethal concentration (LC50) of bifenazate and bifenthrin to T.cinnabarinus was 23.2385 mg/L and 34.5302 mg/L when used after 24 hours，that was 16.0384 mg/L and 15.3873 mg/L after 48 hours.The CTC (common toxicity coefficient) of the mixture of these two acaracides was 115-204 after 24 hours，while that was to 134-224 after 48 hours，it showed a synergistic toxicity to T.cinnabarinus.Among the different mixture ratios of bifenazate and bifenthrin，the one of 1∶1 showed the highest synergistic toxicity to T.cinnabarinus，with a CTC of 204 and 221 after 24 hours and 48 hours，respectively.A mixture of bifenazate and bifenthrin displayed characteristics of action from both acaracides，enhancing their activity to，expanding their range of，and might be helpful to delay the development of resistance by target pests.

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Last Update: 2015-07-17