We found infestation on new vines by these bugs. For more information, please refer to these extension factsheets from Virginia Tech and Cornell University . Damage on leaves (adults feed on leaves) (White spots are residues from fungicides) Culprit: adult grape root worm We had an another night with low RH (in 70% range). Hopefully this trend continues! Plus, we have a vineyard meeting this evening (6 pm) at Doukenie Vineyard . I hope you can make it.
Grape Disease Management Tips from Mizuho Nita (Grape Pathologist at Virginia Tech)