Identification of pathogen:
- Masses of black powdery spores on both exterior and between the scales of the bulbs
- Especially along the vascular strands of the veinswed by these scales becoming dry and papery
- Mycelium - branched, septate thick walled foot cells differentiate and give rise to a single conidiophore
- Conidiophore - globose on which brown sterigmata are formed
- Vesicle, sterigmata, conidia make up the black head - characteristic of the fungus
- Rapid and thorough curing
- Storage - good ventilation
- Temp - just above 0°C
| | | |
| Initial symptom | Black spores on scales | Dry scales | Papery scales with spores |
