• Title/Summary/Keyword: pentaethylene glycol monododecyl ether

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Surfactants Effective to the Control of Cucumber Powdery Mildew (오이 흰가루병 방제 효과가 우수한 계면활성제)

  • Yu, Ju-Hyun;Choi, Gyung-Ja;Lim, He-Kyoung;Kim, Heung-Tae
    • Journal of Applied Biological Chemistry
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    • v.52 no.4
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    • pp.195-199
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    • 2009
  • 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.