Ascochyta fabae
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Ascochyta fabae symptoms on Vicia faba (click on image to enlarge it)
Author(s): Jerzy Opioła
Source: Wikimedia Commons
Author(s): Jerzy Opioła
Source: Wikimedia Commons
Ascochyta fabae symptoms on Vicia faba pods (click on image to enlarge it)
Author(s): Mourad Louadfel
Source: IPM Images
Author(s): Mourad Louadfel
Source: IPM Images
Ascochyta fabae Speg. 1899
The fungus causes a common disease on broad bean and has a world-wide distribution. Infections occur especially under wet and cool conditions. Leaf necrosis and irregular dark spots develop on the pods. Conidia disperse through rain splashes. The fungus can also be transmitted by seeds. For management, resistant cultivars, crop rotation and the use of disease-free seeds is recommended.
Pycnia are dark brown in colour and distributed irregularly over the lesions. The conidia are straight or slightly curved, usually with one septum. They measure approximately 15-20 x 4-5 µm.
| Vernacular names | |
|---|---|
| • Deutsch: | Blattfleckenkrankheit der Bohne |
| • English: | Ascochyta blight of faba bean |
| • Español: | antracnosis de la haba |
| • Français: | anthracnose de la féverole ascochytose de la fève |
Ascochyta fabae f.sp. lentis - see Ascochyta lentis.
Synonyms:
Didymella fabae
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