Fusariuminfection in field barley from the Waikato region of New Zealand was determined in 1989#x2013;91.F. avenaceumand the potentially toxigenicF. crookwellense, F. equiseti, andF. graminearumwere the most commonFusariumspp. isolated from leaf pisces and grain although the species varied with year and site. The incidence ofFusariuminfection was highest in the 1989 crop and may have been influenced by higher mean temperature and rainfall at asthesis in this crop than in the 1990 and 1991 crops. The incidence ofFusariuminfection on maize debris from previous crops was high. The incidence of infection of barley by other toxigenic fungi e.g.,Penicilliumspp. was very low and noAspergillusspp. were isolated.
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