Effect of harvesting time on incidence of seed-borne <i>Fusarium</i> spp. in spring wheat in eastern Ontario

Xue, Allen; Frégeau‐Reid, Judith; Rowsell, J.; Babcock, C. E.; Hoekstra, G. J.; Sparry, Ellen

doi:10.4141/p03-206

Cited by 17 publications

(8 citation statements)

References 12 publications

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“…These results are in agreement with Langseth and Stabbetorp (1996) who conducted a similar experiment in Norway and reported that the effects of year, location, and variety were more important than the effect of harvest date for DON concentration. The results of the present study are also similar to those reported by Xue et al (2004) for spring wheat in eastern Ontario, where a delayed harvest had no effect on DON concentration in the harvested grain.…”

Section: Discussionsupporting

confidence: 90%

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Effect of harvest date on barley grain contamination with Fusarium spp. and deoxynivalenol in northeastern Ontario

Xue

Rowsell²,

et al. 2013

phyto

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The effect of harvest date on the incidence of seed-borne Fusarium spp. and deoxynivalenol (DON) concentration in barley (Hordeum vulgare L.) was studied using three cultivars at three locations in Ontario in both 2004 and 2005. The profile of seed-borne Fusarium spp. was dominated by F. equiseti (Corda) Sacc., F. sporotrichioides Sherb., and F. poae (Peck) Wollenw., isolated from 4.4%, 3.3%, and 1.6% of the kernels, representing 39.3%, 29.4%, and 14.2% of the Fusarium pathogen population, respectively. Fusarium graminearum Schwabe and F. avenaceum (Fr.) Sacc. were each recovered from <1% of the kernels and represented 8.3% and 6.6% of the pathogen population, respectively. Other species, including F. acuminatum Ellis & Everh., F. culmorum (W.G. Sm.) Sacc., and F. semitectum Berk. & Rav., collectively occurred only on 0.2% of all kernels and represented <2% of the population. The incidence level of all Fusarium spp. increased from 6.9 to 13.9% when harvest was delayed. Of the commonly recovered species, only F. avenaceum and F. sporotrichioides levels increased with the delayed harvest, while other species did not follow a clear pattern. DON concentration in the harvested grain ranged from 0.20 to 0.28 mg kg‑1 with the five harvest dates, and was not statistically different. Significant differences in the incidence of all Fusarium spp. and in DON concentration were observed among cultivars, locations, and between the 2 yr of the study. The highest DON concentration observed in this study was 0.5 mg kg‑1, which is below the Canadian tolerance level of 1.0 mg kg‑1.L’effet de la date de récolte sur l’incidence des concentrations aéroportées de Fusarium spp. et de désoxynivalénol (DON) chez l’orge (Hordeum vulgare L.) a été étudié à l’aide de trois cultivars dans trois sites en Ontario en 2004 et 2005. Le profil des Fusarium spp. aéroportées était dominé par F. equiseti (Corda) Sacc., F. sporotrichioides Sherb. et F. poae (Peck) Wollenw., retrouvées dans 4,4 %, 3,3 % et 1,6 % des grains et représentant 39,3 %, 29,4 % et 14,2 % de la population pathogène de Fusarium, respectivement. Fusarium graminearum Schwabe et F. avenaceum (Fr.) Sacc. ont été retrouvées dans <1 % des grains et représentaient 8,3 % et 6,6 % de la population pathogène, respectivement. D’autres espèces, y compris F. acuminatum Ellis & Everh., F. culmorum (W.G. Sm.) Sacc. et F. semitectum Berk. & Rav., étaient présentes dans seulement 0,2 % des grains et représentaient <2 % de la population. Le taux d’incidence de toutes les espèces de Fusarium augmentait de 6,9 à 13,9 % lorsque la récolte était retardée. Chez les espèces les plus souvent retrouvées, seuls les taux de F. avenaceum et F. sporotrichioides ont augmenté lorsqu’on retardait la récolte, alors que les autres espèces n’ont pas suivi de tendance claire. Les concentrations de DON dans les grains récoltés variaient entre 0,20 et 0,28 mg kg‑1 selon les cinq dates de récolte et n’étaient pas statistiquement différentes. Des différences significatives dans l’incidence de toutes les espèces de Fusar...

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Section: Discussionsupporting

confidence: 90%

“…in wheat in Ontario. Xue et al (2004) demonstrated that the incidence of total Fusarium spp. increased about twofold, from 9.5% in seed harvested early to 19.8% following delayed harvest.…”

mentioning

confidence: 99%

Effect of harvest date on barley grain contamination with Fusarium spp. and deoxynivalenol in northeastern Ontario

Xue

Rowsell²,

et al. 2013

phyto

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“…Similar results were obtained by Xue et al (2004), who reported about two-fold increase in the incidence of Fusarium spp. including F. graminearum after a delayed harvest.…”

Section: Discussionsupporting

confidence: 89%

“…However, the strong correlation between harvesting time and incidences of Fusarium spp. would suggest that the mycotoxin contamination in wheat may increase if harvest is delayed (Xue et al 2004). There was a significant linear relationship between DON and ZON concentrations in UK wheat during 2001 to 2008 (Edwards 2009;Edwards 2011).…”

Section: Introductionmentioning

confidence: 99%

Impact of post-anthesis rainfall, fungicide and harvesting time on the concentration of deoxynivalenol and zearalenone in wheat

Kharbikar

Dickin

Edwards

2015

Food Additives & Contaminants: Part A

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Field experiments were conducted to identify the impact of post-anthesis rainfall on the concentration of deoxynivalenol (DON) and zearalenone (ZON) in harvested wheat grain. Winter wheat plots were inoculated with Fusarium graminearum at stem extension (GS31) and prothioconazole was applied at mid-anthesis (GS65) to split plots and plots were subsequently mist irrigated for 5 days. Plots were either covered by polytunnels, irrigated by sprinklers or left as non-irrigated uncovered control plots after medium-milk (GS75). Plots were harvested either when ripe (GS92; early harvest) or three weeks later (late harvest). Fusarium head blight (FHB) was assessed each week from inoculation. At harvest, yield and grain quality was measured and grains were analysed for DON and ZON. Differences in rainfall resulted in contrasting disease pressure in the two experiments, with low FHB in the first experiment and high FHB in the second. Difference in FHB resulted in large differences in grain yield, quality and mycotoxin content. DON concentration was significantly (P < 0.05) higher in irrigated compared to covered and control plots in the first experiment, whereas in the second experiment, DON was significantly (P < 0.05) higher in the covered plots compared to the control and irrigated plots. ZON concentration was significantly (P < 0.05) higher in irrigated plots in both experiments. Later harvesting resulted in an approximate fivefold increase in ZON in the first experiment, but was not significantly different in the second experiment. Prothioconazole significantly (P < 0.05) reduced DON in both experiments, but gave inconsistent reductions to ZON. This is the first report to show that the post-anthesis rainfall can significantly increase ZON in wheat, which can increase further with a delayed harvest but may be significantly reduced with the application of prothioconazole. Importantly, in the absence of moisture late season, ZON remains at very low concentrations even when wheat is severely affected by FHB.

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“…Farrer et al (2006) ont e´galement observe´des augmentations significatives du contenu en DON chez le ble´lorsque la re´colte a e´te´retarde´e de 8 a`19 jours. Cependant, d'apre`s Xue et al (2004), la concentration en DON du ble´n'est pas affecte´e significativement pour des dates de re´colte variant de tre`s haˆtive jusqu'a`tardive c'est-a`-dire du stade Zadoks 91 jusqu'au stade Zadoks 94 (Zadoks et al 1974). Ne´anmoins, la pre´sence de F. graminearum e´tait plus importante lorsque la re´colte e´tait retarde´e.…”

unclassified

Impact de la date de récolte sur la teneur en désoxynivalénol (DON) des grains et la productivité de l'orge

Pageau¹,

Lajeunesse²,

Savard³

2009

Can. J. Plant Sci.

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Effect of harvesting time on incidence of seed-borne Fusarium spp. in spring wheat in eastern Ontario

Cited by 17 publications

References 12 publications

Effect of harvest date on barley grain contamination with Fusarium spp. and deoxynivalenol in northeastern Ontario

Effect of harvest date on barley grain contamination with Fusarium spp. and deoxynivalenol in northeastern Ontario

Impact of post-anthesis rainfall, fungicide and harvesting time on the concentration of deoxynivalenol and zearalenone in wheat

Impact de la date de récolte sur la teneur en désoxynivalénol (DON) des grains et la productivité de l'orge

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