Cherry Problem

[atalanta]

If all you keen horticulturists can't solve my problem, maybe you can advise me of some forum or website which can. After very fine blossom, my morello cherries are filling out, but many are becoming very spotty. This happened in a previous year, and I lost almost the whole crop. Two dwarfing trees, soil mostly ironstone. Both trees fully netted, so it is not bird damage. I have had bumper crops in the past. Can I save this year's crop, or can I do something so that next year's doesn't get the same problem ?

[Chipchopper]

Possibly a fungal disease, commonly known as cherry leaf spot or scorch.
Control of this is difficult and often impractical, other than removing infected material and burning.
I would point you in the direction of the RHS site for some good info.