Comparison of propiconazole and mancozeb applied individually or sequentially for management of fungal brown spot of wild rice.

JA Percich, C M Huot

Research output: Contribution to journalArticlepeer-review

Abstract

Propiconazole and mancozeb applied at 0.24 and 1.12 kg a.i./ha, respectively, to wild rice (Zizania palustris ) plants inoculated with Bipolaris oryzae resulted in lower yields and higher disease severity ratings than fungicide-treated noninoculated controls. Inoculated plants receiving one application of propiconazole followed by two of mancozeb (at boot and heading) had higher yields than other inoculated plants, but the yields did not differ from those of noninoculated plants receiving five applications of mancozeb (at 7-day intervals, beginning at boot). Inoculated plants receiving one application of propiconazole plus two of mancozeb average 24% higher yields than inoculated plants receiving one application of propiconazole at either boot or heading. Propiconazole and mancozeb, individually or sequentially, resulted in significant increases in yield (38-120%) compared with inoculated but nontreated controls.
Original languageEnglish (US)
Pages (from-to)257-259
Number of pages3
JournalPlant Disease
Volume73
Issue number3
StatePublished - 1989

Keywords

  • control
  • disease control
  • pathogens
  • plant pathogenic fungi
  • plant pathogens
  • diseases
  • Zizania palustris
  • brown spot
  • Bipolaris oryzae
  • Cochliobolus miyabeanus
  • fungal diseases of plants
  • plant diseases and disorders
  • Bipolaris
  • yields
  • application timing
  • mancozeb
  • propiconazole
  • cereals
  • plant pathology
  • Fungicides
  • Mancozeb
  • Propiconazole
  • fungicides
  • Agronomy (Agriculture)
  • Infection
  • Pest Assessment Control and Management
  • A 01026:Gramineous crops
  • Microbiology Abstracts A: Industrial & Applied Microbiology
  • K 03089:Fungi: plant
  • Microbiology Abstracts C: Algology, Mycology & Protozoology
  • effects on
  • A 01031:Antifungal & fungicidal agents

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