Toxicities of 20 Fungicides and Co-toxicities between Propiconazole or Azoxystrobin and Difenoconazole on Phomopsis asparagi

DU Yi-xin; SHI Niu-niu; RUAN Hong-chun; GAN Lin; YANG Xiu-juan; CHEN Fu-ru

doi:10.19303/j.issn.1008-0384.2013.02.011

Volume 28 Issue 2

Feb. 2013

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Article Navigation > Fujian Journal of Agricultural Sciences > 2013 > 28(2): 143-147

DU Yi-xin, SHI Niu-niu, RUAN Hong-chun, GAN Lin, YANG Xiu-juan, CHEN Fu-ru. Toxicities of 20 Fungicides and Co-toxicities between Propiconazole or Azoxystrobin and Difenoconazole on Phomopsis asparagi[J]. Fujian Journal of Agricultural Sciences, 2013, 28(2): 143-147. doi: 10.19303/j.issn.1008-0384.2013.02.011

Citation:

DU Yi-xin, SHI Niu-niu, RUAN Hong-chun, GAN Lin, YANG Xiu-juan, CHEN Fu-ru. Toxicities of 20 Fungicides and Co-toxicities between Propiconazole or Azoxystrobin and Difenoconazole on Phomopsis asparagi[J]. Fujian Journal of Agricultural Sciences, 2013, 28(2): 143-147. doi: 10.19303/j.issn.1008-0384.2013.02.011

Citation:

DU Yi-xin, SHI Niu-niu, RUAN Hong-chun, GAN Lin, YANG Xiu-juan, CHEN Fu-ru. Toxicities of 20 Fungicides and Co-toxicities between Propiconazole or Azoxystrobin and Difenoconazole on Phomopsis asparagi[J]. Fujian Journal of Agricultural Sciences, 2013, 28(2): 143-147. doi: 10.19303/j.issn.1008-0384.2013.02.011

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Toxicities of 20 Fungicides and Co-toxicities between Propiconazole or Azoxystrobin and Difenoconazole on Phomopsis asparagi

doi: 10.19303/j.issn.1008-0384.2013.02.011

Institute of Plant Protection,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350013,China

Received Date: 2013-01-02
Publish Date: 2013-02-18

Abstract

Abstract

Toxicities of 20 fungicides and co-toxicities between propiconazole or azoxystrobin and difenoconazole on Phomopsis asparagi were determined by the pathogen′s mycelium growth rates under treatments.The results showed that prochloraz,difenoconazole,epoxiconazole,tebuconazole,chlorothalonil and thiabendazole had higher toxicities among all,with prochloraz being the strongest showing an EC50 of 0.035 5 mg·L-1.Mancozeb,hymexazol,thiram,pyrimethanil,jinggangmycin,copper calcium sulphate and oligosaccharin were not as potent.The co-toxicity efficient(CTC) between difenoconazole and propiconazole(1∶1) was 123.42,suggesting existence of synergism.The synergisms between difenoconazole and azoxystrobin,on the other hand,were reflected by the CTCs of 164.17,132.91 and 141.91 when their mixing ratios were 8∶5,1∶5 and 1∶8,respectively.
- Phomopsis asparagi,
- toxicity,
- co-toxicity efficient,
- fungicide

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References(17)

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