Powdery mildew - news and possible problems | Pepelnica paradajza - novosti i mogući problemi
2010
Bulajić, A.R., Poljoprivredni fakultet, Beograd - Zemun (Serbia)
Powdery mildew occurs on greenhouse-grown tomatoes and occasionally on tomatoes grown in the field. Two causal powdery mildew fungi, Leveilulla taurica and Oidium neolycopersici clearly differ in symptomatology as well as in significance. Recently O. neolycopersici is registered throughout Europe and in neighboring countries and could pose a risk for tomato production in Serbia. Symptoms first appear as small, powdery white colonies on the upper surface of the leaves. The fungi produce numerous conidia which are easily dislodged by wind and carried on short or long distances. Vines may become defoliated under severe infections, leading to lower yields. Among other, control measures should include scouting, eliminating infected leaves, use of resistant varieties and treatments with fungicides.
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