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Meta-Analysis of the Effects of QoI and DMI Fungicide Combinations on Fusarium Head Blight and Deoxynivalenol in Wheat.
Paul, P A; Bradley, C A; Madden, L V; Lana, F Dalla; Bergstrom, G C; Dill-Macky, R; Esker, P D; Wise, K A; McMullen, M; Grybauskas, A; Kirk, W W; Milus, E; Ruden, K.
Afiliación
  • Paul PA; Department of Plant Pathology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster 44691.
  • Bradley CA; Department of Plant Pathology, University of Kentucky Research and Education Center, Princeton 42445.
  • Madden LV; Department of Plant Pathology, The Ohio State University, Ohio Agricultural Research and Development Center.
  • Lana FD; Department of Plant Pathology, The Ohio State University, Ohio Agricultural Research and Development Center.
  • Bergstrom GC; Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853.
  • Dill-Macky R; Department of Plant Pathology, University of Minnesota, St. Paul 55108.
  • Esker PD; Department of Plant Pathology and Environmental Microbiology, Penn State University, University Park 16802.
  • Wise KA; Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907.
  • McMullen M; North Dakota State University, Department of Plant Pathology, Fargo 58108.
  • Grybauskas A; Department of Plant Science and Landscape Architecture, University of Maryland, College Park 20742.
  • Kirk WW; Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing 48824.
  • Milus E; Department of Plant Pathology, University of Arkansas, Fayetteville 72701.
  • Ruden K; Plant Science Department, South Dakota State University, Brookings 57007.
Plant Dis ; 102(12): 2602-2615, 2018 12.
Article en En | MEDLINE | ID: mdl-30295564
Field trials were conducted in 17 U.S. states to evaluate the effects of quinone outside inhibitor (QoI) and demethylation inhibitor (DMI) fungicide programs on Fusarium head blight index (IND) and deoxynivalenol (DON) toxin in wheat. Four DMI-only treatments applied at Feekes 10.5.1, five QoI-only treatments applied between Feekes 9 or Feekes 10.5, three QoI+DMI mixtures applied at Feekes 10.5, and three treatments consisting of a QoI at Feekes 9 followed by a DMI at Feekes 10.5.1 were evaluated. Network meta-analytical models were fitted to log-transformed mean IND and DON data and estimated contrasts of log means were used to obtain estimates of mean percent controls relative to the nontreated check as measures of efficacy. Results from the meta-analyses were also used to assess the risk of DON increase in future trials. DMI at Feekes 10.5.1 were the most effective programs against IND and DON and the least likely to increase DON in future trials. QoI-only programs increased mean DON over the nontreated checks and were the most likely to do so in future trials, particularly when applied at Feekes 10.5. The effects of QoI+DMI combinations depended on the active ingredients and whether the two were applied as a mixture at heading or sequentially. Following a Feekes 9 QoI application with a Feekes 10.5.1 application of a DMI reduced the negative effect of the QoI on DON but was not sufficient to achieve the efficacy of the Feekes 10.5.1 DMI-only treatments. Our results suggest that one must be prudent when using QoI treatments under moderate to high risk of FHB, particularly where the QoI is used without an effective DMI applied in combination or in sequence.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de las Plantas / Tricotecenos / Triticum / Estrobilurinas / Fungicidas Industriales / Fusarium Tipo de estudio: Systematic_reviews Idioma: En Revista: Plant Dis Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Enfermedades de las Plantas / Tricotecenos / Triticum / Estrobilurinas / Fungicidas Industriales / Fusarium Tipo de estudio: Systematic_reviews Idioma: En Revista: Plant Dis Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos