Occurrence of Epicoccum and Stemphylium leaf spot of Lens culinaris Medik. in Hungary [Lens culinaris]
1990
Simay, E.I. (IAQ Research Centre for Agrobotany, Tapioszele (Hungary))
In field trials conducted in Hungary during the 1988/89 season, Epicoccum purpurascens Ehrenb. ex Schlecht. and Stemphylium botryosum Wallr. were observed as new pathogens on lentil. Both fungi caused leaf spots on adult plants, but the older leaves were more susceptible to pathogenic attack than younger leaves. The pathogens were isolated from spotted leaflets then identified. Their pathogenicity was observed in a glasshouse, and both were pathogenic to lentil plants. The oldest leaflets were the most highly infected. Severe symptoms of disease were also observed on the leaves damaged by Tetranychus urticae Koch red mite. Different leaf-pathogens cause major yield losses on lentils. The pathogens Botrytis cinerea Pers ex Fr., Peronospora lentis Gaum. , and Uromyces viciaecraccae Constant were earlier observed in Hungary. Two new fungi were observed causing leaf spot on lentil plants in the summers of 1988 and 1989
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