Silver scab
| Silver scab | ||||||||||||
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Silver scab on a potato |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Helminthosporium solani | ||||||||||||
| Durieu & Mont. |
The Helminthosporium solani ( Helminthosporium solani ) is a fungal disease of the potato . The disease spreads mainly through infected tubers, but the fungus can survive in the soil for several months. The infection takes place primarily in the field, but it is also possible in the camp.
Symptoms and Biology
On varieties with red skin, light, silvery, easily recognizable spots form on which the spores later form. The symptoms are barely visible during harvest and only develop during storage when the temperature (from 5 ° C; optimally 20-25 ° C) and humidity are favorable. The detachment of the skin caused by the disease promotes dehydration and wilting of the bulbs.
Combat
- Good storage conditions
- Use healthy plant material
- Pickle seedlings
literature
- Horst Börner: Plant diseases and plant protection. 7th edition, UTB 518, Verlag Eugen Ulmer, Stuttgart.
Web links
- Helminthosporium solani Durieu & Mont. In the Fungorum index