open wounds on apple tree bark
This is on a 6 year old espalier apple tree (Golden Del.) which is otherwise vigourous and producing well. It has not been sprayedso far in it's life with anything for disease control. These wounds are on areas that cannot be cut out. We have also seen slits on young branches which appear to be early stages of wounds such as this. Extension test of younger branches with smaller versions of similar spots were negative for fire blight. This problem has shown up on our Gala and Liberty apples as well as Kieffer pears. Looking for help identifying the problem so we can find the right solution. Thanks!