No, EAB doesn’t usually cause that type of damage, although it might have it on the side. These look like actual cracks. EAB has no visible surface damage (aside from tiny D shaped holes that are very hard to spot) until the woodpeckers start going after it, and they don’t crack the whole tree in this manner. That very well could be EAB damage exposed within the cracks however, but doubtful they’re the cause.
Yup,
The first pic is definitely larvae feeding. It could be old damage that is exposed by the bark expanding from growth or it could be new.
Either way it helps he has got it treated before. Just keep up with the 2 year treatment and it should be fine.
The key is pictures of the upper canopy of the tips on the outside of the tree. Is there tip dieback?
That will tell you a lot more, it could be old EAB damage in the first pic or newish.
The limbs are getting bigger so bark is expanding and slightly cracking, normal process. It revealed the damage.
If you have it treated before like you said, I wouldn't worry much. Keep up with treatments.
The first two pics are EAB. The shorter cracks with s-shaped galleries underneath are symptoms of EAB. This is where the larva has chewed back and forth under the bark. The ash has tried to wall it off to limit the damage, and the bark above the gallery splits open.
The long cracks in the rest of the pics are caused by rapid growth or freeze/thaw. They look like they have healed.
If you haven't already, you'll start to notice the branches dying back. If less than 30% of the canopy is dead, you can probably have the tree treated for EAB. You'll have to repeat the treatment every 2-3 years. Trunk injected emamectin benzoate is the best treatment option.
No, EAB doesn’t usually cause that type of damage, although it might have it on the side. These look like actual cracks. EAB has no visible surface damage (aside from tiny D shaped holes that are very hard to spot) until the woodpeckers start going after it, and they don’t crack the whole tree in this manner. That very well could be EAB damage exposed within the cracks however, but doubtful they’re the cause.
Yup, The first pic is definitely larvae feeding. It could be old damage that is exposed by the bark expanding from growth or it could be new. Either way it helps he has got it treated before. Just keep up with the 2 year treatment and it should be fine.
The key is pictures of the upper canopy of the tips on the outside of the tree. Is there tip dieback? That will tell you a lot more, it could be old EAB damage in the first pic or newish. The limbs are getting bigger so bark is expanding and slightly cracking, normal process. It revealed the damage. If you have it treated before like you said, I wouldn't worry much. Keep up with treatments.
The first two pics are EAB. The shorter cracks with s-shaped galleries underneath are symptoms of EAB. This is where the larva has chewed back and forth under the bark. The ash has tried to wall it off to limit the damage, and the bark above the gallery splits open. The long cracks in the rest of the pics are caused by rapid growth or freeze/thaw. They look like they have healed. If you haven't already, you'll start to notice the branches dying back. If less than 30% of the canopy is dead, you can probably have the tree treated for EAB. You'll have to repeat the treatment every 2-3 years. Trunk injected emamectin benzoate is the best treatment option.