Potato fungal diseases in the 20th century and possible development of their range
2000
Hausvater, E.(Vyzkumny Ustav Bramborarsky, Havlickuv Brod (Czech Republic))
Approximately a third of more than 30 fungal diseases cause significant economic losses. Distribution and importance of individual diseases had changed in the past. Potato late blight was the most serious problem. In the pre-war and post-war years, other economically dangerous disease was potato wart disease, in the 70ths and 80ths storage diseases caused serious losses and in the last decade diseases damaging tuber quality and appearance become more significant. At present, economic importance of diseases damaging tuber quality is increasing. This is connected with requirements of consumers, who prefer washed potatoes with smooth skin free of disease symptoms in transparent packs on market. In this regard, even more attention is paid to potato black scurf (Rhizoctonia solani) and potato silver scurf (Helminthosporium solani). Late blight (Phytophthora infestans) is a constant priority of fungal disease control. Changes in pathogen populations and oospore occurrence require an intensive research on disease epidemiology and control systems.
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