Is this a problem

i guess not everything, but on another stem a similar problem happened very recently and I cut half of the cambium and it healed fine, but now that stem I am expecting not to grow well.

Paint the trunk with white paint that seems to help prevent initial infection. Dont paint after the infection. Here is an explanation of the disease Cytospora Canker of Stone Fruits in the Home Fruit Planting

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i believe here in my situation it is a bacterium that is acting up, cytospora is a fungal disease, do you think the treatment would be the same?

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What makes you think its bacteria and not fungal? This should help determine the issue Bacterial Canker of Stone Fruit in the Home Fruit Planting.

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I read somewhere that fungal has more abrupt brown areas, but with bacterial the margins less straight.