Question
my maple tree is covered in a yellow fungus and all the leaves are turning black or have black holes.can this tree be saved ?

Answer
Hi Cherie..  Diseases
Sugar maple is susceptible to various disease organisms at all stages of development. Rhixoctonia solani and Sclerotium bataticola attack nursery seedlings; the latter damages the pith. As the trees age, they are subject to various foliage and stem diseases. Some of the more common foliage diseases include anthracnose (Gloeosporium apocryptum), which forms necrotic (dead) areas on the leaves. These are sometimes circular in shape and may be of various sizes; they turn brown, purple, or black as the disease progresses. Tar spot (caused by Rhytisma acerinum) is the name commonly given to a foliage disturbance in sugar maple that starts with small black dots on the leaves, which eventually combine to form large, black, thickened areas.

I have saved many a tree with Atomic Grow which is organic and makes the tree healthy by raising the brix in the plant.  The more brix or sugar the healthier it is causing fungus and bugs to go elsewhere.  Along with a good slow release fertilizer the two work together in perfect harmony.  kathy