Occurrence of Fusarium spp. on Malting Barley Grains in the Czech Republic During 2011-2013

Abstract

frequency of occurrence and species spectrum of Fusarium fungi occurring on grains of five malting varieties of spring barley (Aksamit, Bojos, Malz, Radegast, and Kangoo) were monitored at two locations (Kroměříž and Žabčice, Czech Republic). The effect of three fungicide treatment variants on Fusarium species suppression was also evaluated. During the monitored period, five species were detected: F. poae, F. culmorum, F. graminearum, F. avenaceum, and F. tricinctum. The most frequently isolated species was F. poae. Radegast had the highest frequency of naturally occurring Fusarium fungi, while Kangoo was the least infected variety at both locations. The greatest fungicide effectiveness against Fusarium spp. occurrence on ears was recorded after the variant with application of Hutton at BBCH 39 and Prosaro 250 EC at BBCH 65. During the monitored years, Žabčice had a higher rate of infection by Fusarium fungi. The rates of barley infection by Fusarium pathogens differed among individual years, with the highest rate occurring in 2011 (16 -17 %) and the lowest rate in 2012 (1 -2 %).

Fungicides may have differential efficacies towards the main causal agents of Fusarium head blight of wheat

“…In detail, this trend was observed in wheat and barley in different Italian areas 39‐42 . This change was also confirmed in other countries such as Czech Republic, 43 United Kingdom, 44 Slovak Republic, 45 Denmark, 46 France, 47 Belgium, 48 Argentina, 49,50 central Mexico 51 and different regions of Canada 52,53 . In addition, fluctuations of F. poae and F. avenaceum incidence as the main FHB causal agents within the complex, but with a constant presence of F. graminearum , was also shown in a recent 3‐year single‐field experiment conducted on malting barley in central Italy 54 …”

Diversidade de Fusarium spp. e perfil da contaminação por micotoxinas em cevada cultivada e selvagem do Brasil

“…A ocorrência de Fusarium e Alternaria foi detectada em ambas as regiões estudadas, e foram previamente documentadas em cevada em outras partes do mundo (MEDINA et al, 2006;ROHACIK;HUDEC, 2007;ASTOLFI et al, 2011;BOUTIGNY et al, 2011;NIELSEN et al, 2014;PIACENTINI et al, 2015;BEZDĚKOVÁ;ŠAFRÁNKOVÁ;VÍCHOCÁ, 2016;BECCARI et al, 2018). A ocorrência de ambos os fungos pode gerar implicações negativas, dado que são capazes de produzir micotoxinas, compostos tóxicos que representam um perigo para a saúde humana e animal (OMOTAYO et al, 2019).…”