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Cereal Research Communications
Authors: Thomas Miedaner, Martin Löffler, Christof Bolduan, Bettina Kessel, Milena Ouzunova, Vilson Mirdita, and Albrecht Melchinger

Gibberella ear rot severity and deoxynivalenol concentration. J. Phytopathology 144 :431–436. Hamilton R.I. A 4-year study of the association between Gibberella ear rot severity and

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In 2014 and 2015, we studied the effect of fungicide spraying with 11 different nozzles on the quality and quantity of head and leaf fungicide deposit, the percentage of Fusarium head blight (FHB) incidence, FHB index, the DON content, yield and grain quality parameters. The best quality and quantity of fungicide deposit on the front and rear head sides was achieved with the TeeJet Turbo FloodJet TF VP2 nozzle (FLOOD) and the Albuz AVI-TWIN 110-03 nozzle (AVI). In comparison with the majority of treatments, the FHB incidence and the FHB index was the highest on the unsprayed control. The FHB index was higher using the Lechler IDK 120-03 nozzle (IDK) than with the other nozzle types. In all the treatments, the DON content in the grain was less than 50 μg/kg. At this very low level of infection this is not surprising. The grain yield was the smallest on the unsprayed control. Better fungicide coverage of wheat heads with the FLOOD and AVI nozzles did not result in a statistically higher yield or better grain quality parameters. Negative correlations were confirmed between yield and variables as DON content, FHB incidence and FHB index and also between falling number and variables as fungicide coverage, FHB incidence and FHB index. Positive correlations were determined between DON content and FHB incidence, between hectolitre weight and variables as spray deposit and coverage and between protein content and variables as spray deposit and coverage.

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Fusarium head blight (FHB) of cereals is one of the most important pre-harvest diseases worldwide. One possible method to reduce the intensity of FHB and mycotoxin levels is to apply fungicides to wheat at the flowering stage. This paper reports the efficacy of fungicides to control FHB and reduce the associated mycotoxin biosynthesis. In a two-year experiment eight combinations of fungicides were tested. Ear inoculation with a suspension of conidia of Fusarium culmorum representing the DON chemotype, confirmed by PCR assay, was conducted during anthesis. All fungicides significantly reduced FHB severity. The best control and the highest wheat yield were obtained after the application of spiroxamine + prothioconazole at GS 29-32, combined with prothioconazole + fluoxastrobin at GS 49-55 (yield 166.5% of the control) or tebuconazole and prothioconazole (165.8%). All the other protection programs resulted in higher yields (117.1–138.5% of the control). A clear relation was observed between the disease intensity and mycotoxin concentrations.

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, P.A., Lipps, P.E., Hershman, D.E., McMullen, M.P., Draper, M.A., Madden, L.V. 2007. A quantitative review of tebuconazole effect on Fusarium head blight and deoxynivalenol content in wheat. Phytopathology 97 :211

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Cereal Research Communications
Authors: P. Matušinsky, M. Váňová, L. Tvarůžek, I. Polišenská, M. Janeček, and V. Smutný

, L. , Scudellari , D. , Reyneri , A. 2012 . Integrated strategies for the control of Fusarium head blight and deoxynivalenol contamination in winter wheat . Field Crops Res. 133 : 139 – 149

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151 673 678 Covarelli, L., Turner, A.S., Nicholson, P. 2004. Repression of deoxynivalenol accumulation and expression of Tri genes in Fusarium

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Fusarium mycotoxins zearalenone and deoxynivalenol in agricultural commodities. Food Additives and Contaminants 18 :417–430. Krska R. International interlaboratory study for the

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Acta Agronomica Hungarica
Authors: S. Šliková, M. Havrlentová, P. Hauptvogel, Ľ. Mendel, E. Gregová, and V. Šudyová

Ambrus, Á., Szeitzné-Szabó, M., Zentai, A., Sali, J., Szabó, I. J. (2011): Exposure of consumers to deoxynivalenol from consumption of white bread in Hungary. Food Additives and Contaminants — Part A Chemistry

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Choo, T. M., Martin, R. A., Ho, K. M., Shen, Q., Fedak, G., Savard, M., Voldeng, H., Falk, D. E., Etienne, M., Sparry, E. 2004. Fusarium head blight and deoxynivalenol accumulation of barley in eastern Canada: Cultivar response and correlation analysis

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