Garf if you used the milder solution correctly diluted and had that much leaf damage then you had plenty of disease. That is why I tell people not to wait too long after seeing the emergence of the disease to start spraying. Usually there is much more disease present than you can see. Is any of the new growth shriveling up? Usually the disease has not progressed that far unless it is something like Late Blight or TSWV which both seem to hit the new growth early on. I had some plants that got hit with both this fall but the spray seemed to stop the spread of the Blight to nearby plants. I still have nearly a dozen very healthy looking plants and about a dozen hanging on but still producing and nearly two dozen that are nearly dead. Besides all the diseases we had two nights of freezing weather that hit quite a few of my plants rather hard and even killed a couple.
Did you wait til late in the afternoon to spray?
I would just give it a few days, water them and see if the plants seems to be perking up.
|