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Bioassay and Field Control Efficacy of Six Acaricides Against Tetranychus viennensis Zacher(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年13
Page:
128-131
Research Field:
Publishing date:

Info

Title:
Bioassay and Field Control Efficacy of Six Acaricides Against Tetranychus viennensis Zacher
Author(s):
WANG Zehua; WEI Shujun; SHI Baocai; CUI Wenxia; KANG Zongjiang; GONG Yajun
Institute of Plant and Environmental Protection，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097
Keywords:
Tetranychus viennensis; acaricides; toxicity bioassay; field control efficacy
PACS:
S 482.3
DOI:
10.11937/bfyy.201513036
Abstract:
Taking Tetranychus viennensis as test material，the sensibility of Tetranychus viennensis Zacher to six acaricides was studied using toxicity bioassay and field control efficacy test.The results showed that bifenthrin and abamectin had the highest toxicity among all the tested acaricides，with a LC50 value of 0.0198 mg/L and 0.0327 mg/L，respectively.Biflenazate and chlorpyrifos showed relatively low toxicity，with a LC50 value of 0.1787 mg/L and 0.4828 mg/L，respectively.Pyridaben showed the lowest toxicity，with a LC50 of 17.57 mg/L.The field test indicated that the 43% bifenazate SC(aqueous suspension concentrate)，1.8% abamectin EC (emulsifiableconcentrate) and 240 g/L spirodiclofen SC had excellent available effect and lasting validity period，with 73.35%-100% control effect after application for 1-14 days.As the sensibility of T.viennensis to the acaricides was high，the temperature and humidity conditions should be considered before the application of pesticides.The recommended acaricides were bifenazate，abamectin and spirodiclofen.

References:

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Last Update: 2015-08-21