I have several table grape vines that were here when I bought my property nearly 20 years ago. They've done really well until this year....
I think I have a few different things going on but am not sure exactly... I've tried doing some research, but feel it's inconclusive without someone more knowledgeable about grape diseases giving an opinion...
This first picture shows stem die back. There are "fissures" in the stems, and I don't know if this is related or not, but I found a very tiny larva moving around.. Barely visible to the naked eye.. You can also see some leaf spotting
Problem #2 is possible Downy Mildew... or Powdery Mildew?
But this is the scary one... My research brought up Esca or "Black Measles" which shows the same symptoms.. It's a big problem in Europe...
Any thoughts or help would be appreciated.. I'm going to post this over in fruits and vegetables too..