Browse > Article

Effect of Foliar Uptake of Azoxystrobin and Kresoxim-methyl on Fungicidal Activity against 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)
Kim, Heung-Tae (Department of Plant Medicine, Chungbuk National University)
Publication Information
Applied Biological Chemistry / v.51, no.2, 2008 , pp. 108-113 More about this Journal
Abstract
Azoxystrobin applied by aqueous WP suspension 50 mg/l was slightly absorbed into cucumber leaf in the absence of activator surfactant 24 h after spraying, but was increased to 25.7% by adding polyoxyethylene monohexadecyl ether (12 moles of ethylene oxide, CE-12) 500 mg/l. Only 4.1% of kresoxim-methyl WDG 100 mg/l in the absence of surfactant was absorbed into cucumber leaf 24 h after spraying, but was increased to 58.0% by adding polyoxyethylene monooctadecyl ether (14 moles of ethylene oxide, SE-14) 1,000 mg/l. The effect of CE-12 500 mg/l on foliar uptake of kresoxim-methyl at 50 mg/l was twice bigger than on azoxystrobin. Fungicidal activity of azoxystrobin WP against cucumber powdery mildew was marginally increased by adding surfactants to facilitate foliar uptake of azoxystrobin, so that the further increase of azoxystrobin uptake into cucumber plant by the addition of adjuvant was not a practical mean for enhancing the formulation efficacy in view of fungicidal activity. It was not possible for kresoxim-methyl to assess the adjuvant effect on the fungicidal activity in a greenhouse trial due to the vapor effect of active ingredient.
Keywords
azoxystrobin; cucumber; foliar uptake; kresoxim-methyl; powdery mildew; surfactant;
Citations & Related Records

Times Cited By Web Of Science : 0  (Related Records In Web of Science)
연도 인용수 순위
  • Reference
1 Ypema, H. L. and Gold R. E. (1999) Kresoxim-methylmodification of a naturally occurring compound to produce a new fungicide. Plant Disease 83, 4-19   DOI   ScienceOn
2 Yu, J. H., Lim, H. K., Choi, G. J., Cho, K. Y. and Kim, J. H. (2001) A new method for assessing foliar uptake of fungicides using Congo Red as a tracer. Pest Manag. Sci. 57, 564-569   DOI   ScienceOn
3 Stock, D., Holloway, P. J. (1993) Possible mechanisms for surfactant-induced foliar uptake of agrochemicals. Pestic. Sci. 38, 165-177   DOI   ScienceOn
4 Godwin, J. R., Young, J. E. and Hart, C. E. (1994) ICIA5504: Effects on development of cereal pathogens, in Proc Brighton Crop Protect Conf-Pests and Diseases, BCPC, Farnham, Surrey, UK, pp 259-264
5 Yu, J. H. (2000) Evaluation of Foliar Uptake of Pesticide: Method Development and Application, Ph.D. Thesis, Seoul National University, School of Agricultural Biotechnology, Suwon, Korea
6 Bauer, P., Grayson, B. T. and Schonherr, J. (1997) Polydispersed ethoxylated fatty alcohol surfactants as accelerators of cuticular penetration. 1. Effect of ethoxy chain length and size of penetrants. Pestic. Sci. 51, 131-152   DOI   ScienceOn
7 Tomlin, C. D. S. (2000) In 'The Pesticide Manual' Twelfth Ed., British Crop Protection Council, Surrey, UK
8 Leinhos, G. M. E., Gold R. E., Duggelin, M. and Guggenheim, R. (1997) Development and morphology of Uncinula necator following treatment with the fungicides kresoxim-methyl and penconazole. Mycol. Res. 101, 1033-1046   DOI   ScienceOn
9 Dave, W. B., John, M. C., Jeremy, G. G., Alison, A. H., Mick, H. and Bob, P-D. (2002) The strobilurin. Pest Manag. Sci. 58, 649-662   DOI   ScienceOn
10 Cho, K. Y., Yu, J. H., Lim, H. K., Choi, G. J. and Kim, J. H. (1999) Composition and method for measuring the foliar uptake of agrochemicals. Patent Application PCT/KR 99/00342
11 Wong, F. P. and Wilcox, W. F. (2001) Comparative physical modes of action of azoxystrobin, mancozeb, and metalaxyl against Plasmopara viticola. Plant Disease 85, 649-656   DOI   ScienceOn