Needle cast on residential pine tree
My tree professionals diagnosed one of my 30 foot pine trees with needle cast. It is advanced and has been present and spreading over the last three years. This year it is really bad and covers 1/4 to 1/3 of the tree. I am wondering if I can save it with a fungicide myself, should I get professional help, or will the tree not come back? The lower branches are covered nearly from the trunk to the tip. It is also spreading to other trees now. If I could spray myself, any recommendations of what to use and how frequently to spray?