Fusarium species and mycotoxins on maize in Switzerland | Fusariose du maïs en Suisse: inventaire des espèces de Fusarium et mycotoxines
2009
Dorn, B. | Forrer, H.-R. | Vogelsang, S., Station de recherche Agroscope Reckenholz-Taenikon ART, Zuerich (Switzerland) | Schürch, S.
At serveral sites in Switzerland, Fusarium incidence and Fusarium species complex were assessed from maize kernels and stem pieces from commercially grown maize hybrids. The Fusarium incidence ranged from 0.4% to 49.7% on kernels and from 24.7% to 83.8% on stem pieces. Using the agar seed plate method, 16 different Fusarium species were isolated from kernels and 15 from stem pieces. Fusarium species prevalence differed between samples from the north and the south of the country, between kernel and stem pieces, between the different trial sites, as well as between the different years. The dominant species on kernels in the north were F. graminearum (33.0%), F. verticillioides (28.9%), F. subglutinans (10.6%), and F. proliferatum (7.0%). On stem pieces, the most frequently observed species were F. equiseti (36.0%), F. verticillioides (20.1%), F. graminearum (9.5%), F. crookwellense (6.2%) and F. sublutinans (6.2%). In the south, the dominant species was F. verticillioides (57.1%). Mycotoxins were analysed for those samples as Fusarium incidence was very high: fumonisin concentration exceeded in most of the samples the limit of 5 mg kg-1 recommended in feed.
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