Peacherine Twigs Breaking
I have a 6 year old peacherine. All around the top of the tree a lot of the new growth is breaking off from the older wood. No sign of chewing, just a clean half-break which leaves the new growth hanging limp from the joint. Any explanations?
From your description, it could be peach twig borer: http://www.ipm.ucdavis.edu/PMG/r602300611.html
You need to get an analysis from a professional. You could have samples examined by a nursery, university botany dept, or the master gardeners. They have loads of information and assistance available for home gardeners. This link will help you locate the nearest group: