| Black mould: Aspergillus niger, A. alliaceous |
Symptom:
- Whole tissue become black powdery mass
- Individual bulbs shrivel and become light in weight
- Under high humid condition the inner tissues become moderately soft
- Infected bulbs lose their pungency and smell
- Rotten garlic cloves show black, brown, pink or white coloured rotting
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Black powdery mass |
Shrivelled rottten bulb |
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Identifcation of Pathogen:
- 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
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Management:
- Rapid and thorough curing
- Storage - good ventilation
- Temp - just above 0° C
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Source of Images:
http://plant-clinic.bpp.oregonstate.edu/garlic |
