Answers
I wonder if it is or is related to bunch rot.
One of the symptoms is that black grapes turn red. Do you see any fungal growth on infected grapes?
Here is more info:
http://ipm.ucanr.edu/PMG/r302100111.html
One of the symptoms is that black grapes turn red. Do you see any fungal growth on infected grapes?
Here is more info:
http://ipm.ucanr.edu/PMG/r302100111.html
Posted
by: Sheena Sidhu
(19 points)
Posted: November 15, 2016
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is this your image? Is it from Iran? Doesnt look like it but perhaps in the mountains? What time of year? Now? How common was the condition about 8 years ago.
Thank you, Yes,this photo sent of a mountainous area in Iran and now autumn is here and the bottom cluster is wrinkled. The temperature range is approximately between -2 ° C to 15 °. The weather is cloudy. about 8 years ago.