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Journal of Agriculture ›› 2016, Vol. 6 ›› Issue (5): 18-22.doi: 10.11923/j.issn.2095-4050.cjas15090002

Special Issue: 园艺

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Laboratory Screening and Field Control Effect of Five Kinds of Fungicides on Tomato Basal Stem Rot

  

  • Received:2015-09-07 Revised:2015-11-03 Accepted:2015-11-25 Online:2016-06-01 Published:2016-06-01

Abstract: The paper aims to screen out effective fungicides to control tomato basal stem rot and provide guidance for field control. Inhibiting effect of 5 fungicides on the growth of Pythium ultimum was investigated indoor. The test verified that the 5 fungicides, hymexazol, ovraclostrobin·metiram, copper calcium sulphate, thiophanate-methyl and famoxadone·cymoxanil, had control effect on the growth of Pythium ultimum. The results showed that hymexazol had the best antibacterial effect with the EC50 value of 0.364 mg/L, then was ovraclostrobin·metiram with the EC50 value of 9.247 mg/L, other fungicides had poor control efficiency. In field fungicide screening test, the combined control efficiency of 70% hymexazol WP and 70% thiophanate-methyl WP was 95.57%, which was better than other combinations and could be used in field control.