Pine Tree Losing Needles Leaving Bare Stems

Question

Pine tree is losing its needles and leaving bare stems starting at the top. Also, my quaking and a few other trees have cuts or holes going into the trunk and some limbs. What can be causing these problems?

Answer 1

This article has information about diseases of pine trees: http://www.ces.ncsu.edu/depts/pp/notes/Ornamental/odin19/od19.htm