It is not easy to distinguish among the different grape trunk diseases (esca, Eutypa dieback, Botryoshpaeria, Petri disease, Black foot, Back Dead Arm ecc.), that can present variable symptoms depending on the age of the plant and on its conditions.
The video presents a wide gallery of images on the symptoms of the main GTDs, on leaves during different phenological phases of the vine, on the clusters, and in the cases of apoplexy.