| Alternaria rot: Alternaria alternata |
Symptom:
- Dark grey, slightly sunken irregular lesion, developing lengthwise
- Grey cottony mycelial mat bearing conidia appeared on the surface of developing lesions
- When diseased pod cut transversally – blackened necrotic tissues
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Non infected and indected plant |
Inner syndrom of pods |
Nectotic tissues ` |
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Identification of pathogen:
- Conidiophores - simple straight or curved, sometimes branched
- Yellow brown to medium golden brown colour
- Conidia - transverse and longitudinal septa, pale to dark brown in colour, produced in short chains
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Management:
- Spray 0.2% Zineb or 0.2 % mancozeb
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Source of Images: El- Sayed Hussein El- Sayed Ziedan (2012) First report of Alternaria pod blight of okra in Egypt. Journal of Agricultural Technology, 8(7), pp.2239-2243.
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