I have a peach orchard with 9 year old trees. During the last 3 years, the peaches exhibited cracking from pole to pole of the fruit. At the opened area, the fruit becomes dark. I have tried both chemical and organic pesticide and fungus treatment with little success.
Last year a different problem arose. The fruit, not the whole fruit, developed a dark, almost black region from surface inwards. The meat does not change in texture or shows evidence of fungal activity, only the darkened regions.
If you have any suggestions as to the diseases and treaments of these two problems I would be very much greatful.