Fruit Trees Disease
HELP! What is happening with my Apple, Apricot and Pear trunks and bark? What treatment do they need? See photos... Also what is best to feed them and when? Thank You, Conrad
It's difficult to determine the issue, though it appears your trees are shedding bark and have some fungus on the trunks.
You should examine the entire tree; leaves, branches, fruit to help identify the issue. Do you see evidence of pests?
These links will help you.