Impact du précédent cultural et de la fertilisation azotée sur la teneur en désoxynivalénol chez l’orge

Pageau, Denis; Lafond, Jean; Lajeunesse, Julie; Savard, Marc E.

doi:10.1080/07060660809507537

Cited by 11 publications

(9 citation statements)

References 26 publications

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“…Lack of crop rotation was significantly connected to increases of measured characteristics: total Fusarium, F. graminearum, F. langsethiae , DON and HT-2. The results are in accordance with a range of reports discussing Fusarium and DON content in cereals ( Aldred and Magan 2004 ; Edwards 2004 ; Oldenburg 2004 ; Beyer et al 2006 ; Köpke et al 2007 ; Pageau et al 2008 ). Most authors also indicate that maize before cereals is particularly risky, but maize is not a common crop in Norway.…”

Section: Discussionsupporting

confidence: 92%

Influence of agronomic and climatic factors onFusariuminfestation and mycotoxin contamination of cereals in Norway

Bernhoft

Torp

Clasen

et al. 2012

Food Additives & Contaminants: Part A

126

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A total of 602 samples of organically and conventionally grown barley, oats and wheat was collected at grain harvest during 2002–2004 in Norway. Organic and conventional samples were comparable pairs regarding cereal species, growing site and harvest time, and were analysed for Fusarium mould and mycotoxins. Agronomic and climatic factors explained 10–30% of the variation in Fusarium species and mycotoxins. Significantly lower Fusarium infestation and concentrations of important mycotoxins were found in the organic cereals. The mycotoxins deoxynivalenol (DON) and HT-2 toxin (HT-2) constitute the main risk for human and animal health in Norwegian cereals. The impacts of various agronomic and climatic factors on DON and HT-2 as well as on their main producers F. graminearum and F. langsethiae and on total Fusarium were tested by multivariate statistics. Crop rotation with non-cereals was found to reduce all investigated characteristics significantly – mycotoxin concentrations as well as various Fusarium infestations. No use of mineral fertilisers and herbicides was also found to decrease F. graminearum, whereas lodged fields increased the occurrence of this species. No use of herbicides was also found to decrease F. langsethiae, but for this species the occurrence was lower in lodged fields. Total Fusarium infestation was decreased with no use of fungicides or mineral fertilisers, and with crop rotation, as well as by using herbicides and increased by lodged fields. Clay and to some extent silty soils seemed to reduce F. graminearum in comparison with sandy soils. Concerning climate factors, low temperature before grain harvest was found to increase DON; and high air humidity before harvest to increase HT-2. F. graminearum was negatively correlated with precipitation in July but correlated with air humidity before harvest. F. langsethiae was correlated with temperature in July. Total Fusarium increased with increasing precipitation in July. Organic cereal farmers have fewer cereal intense rotations than conventional farmers. Further, organic farmers do not apply mineral fertiliser or pesticides (fungicides, herbicides or insecticides), and have less problem with lodged fields. The study showed that these agronomic factors were related to the infestation of Fusarium species and the concentration of mycotoxins. Hence, it is reasonable to conclude that farming system (organic versus conventional) impacts Fusarium infestation, and that organic management tends to reduce Fusarium and mycotoxins. However, Fusarium infestation and mycotoxin concentrations may be influenced by a range of factors not studied here, such as local topography and more local climate, as well as cereal species and variety.

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Section: Discussionsupporting

confidence: 92%

Influence of agronomic and climatic factors onFusariuminfestation and mycotoxin contamination of cereals in Norway

Bernhoft

Torp

Clasen

et al. 2012

Food Additives & Contaminants: Part A

126

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“…The result of various fertilizer applications (Table 1) had no effect on the occurrence of FHB and FCR disease incidence. This result agree with the findings of the following authors, Aufhammer et al (2000), Subedi et al (2007), Pageau et al (2008), Yoshida et al (2008), Krnjaja et al (2015), and Hofer et al (2016), who reported that the application of nitrogen fertilization did not increase or even stimulate FHB occurrence. In addition, Parry et al (1995) stated that the effect of nitrogen application on FHB disease remains uncertain.…”

Section: Discussionsupporting

confidence: 93%

Interaction between Fusarium head blight and crown rot disease incidence and cultural practices on wheat in the south of Iraq, Basra province

Minati

Mohammed-Ameen

2019

Bull Natl Res Cent

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Background: This study was conducted to estimate Fusarium head blight (FHB) and crown rot (FCR) disease incidence on wheat and their interaction with cultural methods (cultivar types, planting time, seed rate, crop rotation, and fertilizer practices) that are used in wheat cropping system in the south of Iraq, Basra province. Results: The results showed that the mean average of FHB and FCR was 27.2% and 31%, respectively. This displays that very nearly one-third of wheat crop planted in those 14 fields were infected by both diseases but not very severely, except in two fields (D and HM), which were devastating, 54% and 71% and 41% and 52% for FHB and FCR, respectively. The highest level of incidence for both diseases was associated with the earlier and latest planting dates 28 Oct. and 10 Dec., while the lowest was with 1, 10, and 23 Nov. A 200 and 120 kg/ha were the highest and lowest seed rates used in this study. The selected wheat fields differed in their pre-crop rotations (legume, corn, sorghum, okra, and continuous cropping system of wheat) in a previous year. The amount of added fertilizers (urea, DAP, and NPK) to the studied fields was in a high variation. The seven wheat cultivars examined in this study showed different levels of susceptibility to both diseases. Conclusion: The results verified that most of the agricultural practices examined in this study were associated with positive correlation for FHB and FCR in the occurrence of disease incidence. Except the cultivar type and fertilizer application had unclear relationship with the incidence of both diseases.

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“…In our study, the cereals-oat rotation resulted in higher mycotoxin levels in oat grains than that with canola-oat or flaxoat rotations. Similarly, Pageau et al [46] showed that the highest DON content in barley occurs when cereals rather than a dry pea are seeded in crop rotation. The preceding crop likely affects FHB epidemics by acting as a suitable host plant for Fusarium pathogens, i.e., increasing the amount of inoculum and producing large amounts of crop debris suitable for the saprophytic survival of these pathogens [47].…”

Section: Discussionmentioning

confidence: 92%

Naturally Occurring Fusarium Species and Mycotoxins in Oat Grains from Manitoba, Canada

Islam

Tabassum

Banik

et al. 2021

Toxins

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Fusarium head blight (FHB) can lead to dramatic yield losses and mycotoxin contamination in small grain cereals in Canada. To assess the extent and severity of FHB in oat, samples collected from 168 commercial oat fields in the province of Manitoba, Canada, during 2016–2018 were analyzed for the occurrence of Fusarium head blight and associated mycotoxins. Through morphological and molecular analysis, F. poae was found to be the predominant Fusarium species affecting oat, followed by F. graminearum, F. sporotrichioides, F. avenaceum, and F. culmorum. Deoxynivalenol (DON) and nivalenol (NIV), type B trichothecenes, were the two most abundant Fusarium mycotoxins detected in oat. Beauvericin (BEA) was also frequently detected, though at lower concentrations. Close clustering of F. poae and NIV/BEA, F. graminearum and DON, and F. sporotrichioides and HT2/T2 (type A trichothecenes) was detected in the principal component analysis. Sampling location and crop rotation significantly impacted the concentrations of Fusarium mycotoxins in oat. A phylogenetic analysis of 95 F. poae strains from Manitoba was conducted using the concatenated nucleotide sequences of Tef-1α, Tri1, and Tri8 genes. The results indicated that all F. poae strains belong to a monophyletic lineage. Four subgroups of F. poae strains were identified; however, no correlations were observed between the grouping of F. poae strains and sample locations/crop rotations.

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Impact du précédent cultural et de la fertilisation azotée sur la teneur en désoxynivalénol chez l’orge

Cited by 11 publications

References 26 publications

Influence of agronomic and climatic factors onFusariuminfestation and mycotoxin contamination of cereals in Norway

Influence of agronomic and climatic factors onFusariuminfestation and mycotoxin contamination of cereals in Norway

Interaction between Fusarium head blight and crown rot disease incidence and cultural practices on wheat in the south of Iraq, Basra province

Naturally Occurring Fusarium Species and Mycotoxins in Oat Grains from Manitoba, Canada

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