We're promised rain soon so see how that affects the leaves, I had brown marks like that last year and they came to nothing so maybe it isn't blight after all, my other potatoes seem to be free of any marks at the moment so I will see what happens with them I only dug the early spuds as they were ready and removing the two rows has opened the area up to allow air to circulate around the rest of the crop so it seems like a win win situation. I understand that if blight does take hold then the tubers can be saved by cutting the haulms down and taking them to the council tip or burning them, the tubers then should be left in the ground for a week before digging them up on a dry day and using them as soon as is possible as they won't keep.
I wouldn't be too worried about those marks - when my potatoes had blight in the past, one day there were a few blotches on the leaves, the next day the foliage had all but collapsed - it happened very quickly.
Thanks for the replies. Interesting to hear other people's experiences. I think the big test will be when it rains, because if it is blight then it is not ideal conditions for it to spread at the moment. Add a mix of rain and sunshine and if it's blight then i'd expect it to spread quite rapidly, though early blight is slower to spread than late blight from what I read, so I'm not entirely sure what to expect.
I grew potatoes many years ago for one year, but I forget what happened. I think they got scab but not blight that time, but not 100% sure, it was a long time ago. Isn't it great we can all communicate on here for people's recent experiences!
Well I have some similar marks on my potatoes and as I type, the rain has just started. I'll be watching very carefully tomorrow. I'm not predicting a good outcome as I know there has been confirmed blight in a crop not too far away