Dominancy proportions of some wheat-pathogenic fungi were investigated by the authors in Hungary, near to the lake Balaton, in the years 2001-2002. In small plot trials, each 10 species of fungi from two breeding institutes were surveyed. In the year 2001, the dominant pathogen was Puccinia recondita f. sp. tritici. During the breeding season the infectedness increased gradually and reached up to 28.50% by middle of May. The infectedness of some species came near to 50-90% by this time. In the year 2002, the brown-rust infectedness was of smaller measure than a year before. The infectedness caused by Puccinia stiiformis was considerable only in 2001 although it did not reach the level of the leaf-rust. The measure of the infectedness caused by Blumeria graminis f. sp. graminis proved to be considerable in not one of the years investigated. The flag-leaves and ears of several species were damaged seriously in 2001 while the powdery-mildew infectedness of wheat remained small in 2002. The damages of small measure are mainly caused by the extremely dry weather.
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September 2004
University of Veszprém, Georgikon Fakulty of Agricultural Sciences, H-8361 Keszthely, Hungary.
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