I have 20 acres of blueberries (3 fields in an L shape) in Indiana. Last week everything looked great. A couple days ago we noticed some die back In all of our fields. It's at the tops and outside branches, none of the lower branches. At first we thought It was herbicide drift from a neighboring row crop farmer. After speaking to him today that doesn't seem Likely as he did not spray near some of the damaged area. We did have Everything Pruned by a crew that prunes other Farms this past February, so now we wonder if it's a disease From that. Our extension agents are not familiar with blueberries and are not able to help Identify what is going on. I have more pictures but can only upload one due to size limits