I have an apple tree with this disease (see photos). Not sure exactly what the disease is - some kind of leaf spot. Initially I had tried removing leaves and intermittent spraying with copper, then later with natria, but the disease spread and is pretty much through the entire tree. There are some new leaves at the top that look healthy. Pruning off diseased branches/leaves doesn't seem like a viable option since it's pretty much the entire tree.
What is the recommended approach?
If removing severely affected leaves and branches is still recommended, how much is too much?
Should I just wait for next season?
What treatment is recommended?
Thank you
