I have uploaded photos I just took iof my Father's tree. It is on a drip system and has been for years. In the last few months the leaves have started to turn. Some of the smaller twig branches appear dead when I tested them, other do not appear to be dead. Any help will be appreciated. Hope I posted correctly! :-) Thee Mum
Unless salt build up is an issue where you are I'd suspect drought stress. The roots (for whatever reason) aren't up-taking enough water to offset evaporation. Welcome to the forum. Incidentally check that you don't have clogged emitters and that the flow has be increased enough to compensate for growth over time.
