Identification of pathogen:
- Soft, watery, colourless decay on carrot roots
- Decayed area - covered with dull, white spores of the pathogen and a vinegar-like odour may develop
- Fungus - soil inhabitant that infects carrots through wounds
- In storage – warm temp (greater than 32°F) and improperly ventilated
In storage
- G. candidum - grows as a series of filamentous cells called hyphae
- Its spores, called conidia or arthrospores, are produced by fragmentation of the hyphae
- Hyphae and spores are white and appear colorless
Management :
In the field
- Good field drainage
- Minimizing wounding of carrots
- Good sanitation (use of new or disinfected storage containers)
- Precooling and storing carrots at 32º F is essential
| Soft watery colourless decay | Infected carrots |