Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (19): 284-288.doi: 10.11924/j.issn.1000-6850.2014-0383

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The Diagnosis and Fungicide Screening of Eggplant Fruit Rot in Xintian County of Hunan

  

  • Received:2014-02-19 Revised:2014-03-06 Online:2014-07-05 Published:2014-07-05

Abstract: Eggplant fruit rot disease in Xintian County vegetable base caused severe loss in August 2012. Fungus isolates from diseased eggplant proved to be Phomopsis vexans under microscopic examination. Analyses of rDNA-ITS sequences of the isolates support the result of microscopy. In vitro fungicide screening was carried out because chlorothalonil, carbendazim, mancozeb can’t control fruit rot in eggplant fields. Toxicities of 11 selected fungicides on P. vexans were evaluated using mycelium growth rate method. The toxicity of prochloraz was the strongest ,with the EC50 of 0.021mg / L; followed by thiophanate-methyl and difenoconazole, with the EC50 of 0.252mg / L and 0.434mg / L; The inhibitions of chlorothalonil and Kresoxim were lowest, with EC50 of 44.400mg / L and 54.470mg / L. The use of prochloraz was recommend to combat eggplant phomopsis rot.