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Pine Tree Damage or Disease?
Pine Tree Damage or Di  
I believe this is a Loblolly or Longleaf Pine Tree in (East) Columbia, SC. My father-in-law sent me a picture of what seems to be yellow powder within missing bark at the base of his pine tree. I think it may be from damage from a lawnmower and the tree is trying to "heal" itself. But I'm not sure otherwise. I cannot find anything on the internet about this particular problem.
Here's the picture he sent me. Thanks in advance for your assistance.

Answer
This is a disease called Fusiform Rust. In the spring the fungi puts out orange spores and these will land on an oak tree leaf and make spores that will come back to a pine needle. It is not a problem on large pines. It can kill small seedling but it will not be a problem here. The orange will go away soon and all you will see is a slight swelling. Also no problem for oaks at all. You do not need to do anything tree will be fine.  

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Jim Hyland

Expertise

I am an expert in Forestry, Forest Entomology, Forest Pest Control, and Forest Health. Extensive knowledge in Identification of insects and diseases of trees. Expert on Bark beetles and other insects that attack forests. Also a Registrated Forester with extensive knowledge in the management and care of forests.

Experience

34 years as State Pest Management Chief in a Southern state. Extensive knowledge in Forestry.

BS with major in Forest Management and Entomology
Registered Forester
Certified Pesticide Appicator

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