Gill, when first reading this thread earlier today I thought this seemed unlikely to actually be Pseudomonas syringae, but as I am no expert on tomato diseases I did not say so. I have seen different pathovars of P. syringae cause damage in woody plants here, most often winter/early spring dieback, but like you have never heard of it being a problem in tomatoes. It would be interesting if you could post some photographs of your infected plants, maybe someone could confirm the diagnosis or offer an alternative explanation.
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