| Anthracnose: Colletotrichum melongenae |
Symptom:
- Sunken lesions on fruits vary in size
- Upto 1.3cm wide and may coalesce
- Tan colored ooze of fungal spores appear on lesions
- Fruit dries & become black – fruit drop
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Concentric rings |
Decayed fruit |
Severe infection |
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Identification of pathogen:
- Mycelium - septate, branched & light pink to brown
- Acervuli - simple globose and dark brown
- Conidiophore - erect and hyaline
- Conidia - hyaline, one celled, oval or oblong
Mode of spread and survival
- Survives on crop debris as acervuli
- Spores dispersed by rain splash
Epidemiology
- RH - 100%
- Temp - 21 to 29°C
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Management:
- Field sanitation - destruction of infected plant debris
- Other host plant - S. torvum
- Harvesting of fruits before they over ripe
- Zineb or ferbam spray at 10 days interval
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Source of Images:
http://www.infonet-biovision.org/default/ct/116/crops#_1793_903
http://www.extension.umn.edu/garden/diagnose/plant/vegetable/eggplant/fruitspots.html |
