Alternaria rot: Alternaria alternate
Symptoms:
- Typical rot symptoms of this disease are nearly round, brown to black lesions, often centred around a skin break or weakened tissue.
- The spots are firm, dry and shallow.
- The surface of spots becomes dark brown to black and in the advanced stages, the rotted tissues become spongy and the affected flesh turns black.
|
|
|
|
Rounded brown spot |
Enlarged brown spot |
Rotted tissues |
Internel rotten tissue |
Management:
- Practice orchard sanitation and “soft handling” of fruit.
- Harvest fruit at proper maturity.
- Careful handling during picking, washing, and packing
- Store fruits at temperatures of 0° to 4 °C.
Image source: http://postharvest.tfrec.wsu.edu/marketdiseases/alternaria.html
|