Please excuse me if I am misusing this site, but what is affecting these grapes? A fungus or some insect pest?
No identification made yet.
No interactions present.
Could the splitting of the fruit indicate a problem with watering? This then being followed by fungal spores getting into the cuts??
Thanks Ian... unfortunately I really have no idea. I was told that it was due to mildew - possible? It gets well watered. It suddenly starts going bad at the end of the summer, each summer, so maybe it's some kind of fungal attack. Any help is most welcome ;-)
Splitting is often caused by erratic watering or, more frequently, by over-watering. If the vine is in a greenhouse, the roots may spread beyond the greenhouse and take up too much water in a wet season. As suggested below, the fungus is secondary to the splitting: the split allows the fungal spores to get in.
Many thanks for the help all of you. I'll cut out the watering this summer and see how it develops.
The fungus is secondry to damage by splitting and not the cause of your loss.
All given ID's are subject to error/ommissions. Please seek independent verification before acting on ANY advice given. BE SAFE =)
Go on the offensive - don't take the criticism of your growing conditions. Some wine growers deliberately let their grapes affected by "Noble rot". So you were really experimenting with Pourriture Noble.
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