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http://dx.doi.org/10.3839/jabc.2009.033

Surfactants Effective to the Control of Cucumber Powdery Mildew  

Yu, Ju-Hyun (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology)
Choi, Gyung-Ja (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology)
Lim, He-Kyoung (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology)
Kim, Heung-Tae (Department of Plant Medicine, Chungbuk National University)
Publication Information
Journal of Applied Biological Chemistry / v.52, no.4, 2009 , pp. 195-199 More about this Journal
Abstract
To select antifungal surfactants, control efficacy of various nonionic and anionic surfactants on cucumber powdery mildew was evaluated under greenhouse conditions. Among 14 surfactants, pentaetylene glycol monododecyl ether ($C_{12}E_5$), mixture of heptaethylene glycol monodecyl ether and heptaethylene monododecyl ether, and heptaethylene glycol mono-9-octadecenyl ether effectively reduced the development of powdery mildew on cucumber plants. Among the surfactants, $C_{12}E_5$ gave the best control efficacy on the disease and did not show phytotoxic response in cucumber plants. Whereas, fenarimol at a recommended rate (31.3 mg/L) showed less control activity than the surfactant (1,000 mg/L). In addition, mixtures of the surfactant and DBEDC, a protective fungicide, showed high control efficacies against powdery mildews of cucumber and strawberry by additive effect in greenhouse tests.
Keywords
control efficacy; cucumber powdery mildew; DBEDC; pentaethylene glycol monododecyl ether; surfactant;
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