Hello everyone! I’m trying to ID a bark issue that I’m seeing pop up in several of my apple nursery trees. Some info on the plants: 2-3 year old trees on bud118 and dolgo rootstock.
It starts out looking like this- long squiggly lines on the bark.
This is it in a more advanced state.
Some trees are also showing this vertical cracking, I’m not sure if it’s related but I feel like it may be.
Any thoughts? I’ve had a hard time IDing this through various forum searches, online extension resources, etc. Anthracnose? Winter damage? Pest? Would appreciate any insight into this!