Sarpo Mira Covered in Blight....

I have a 12 foot row off Sarpo, and they have blight spots all over them.

Anyone else had this problem?

I'll try and get some tonight and post about 7pm

Might be wrong but I seem to remember someone posting that the Sarpo varieties can still get attacked by blight, but they have enough resistance to not actually be killed by it. 

Don't know whether that's early (target) blight or a demonstration of how good Sarpo varieties are at continuing to grow through a late blight attack. 

Whichever it is it certainly hasn't killed them anyway. 

interesting, one of the salad potato varieties I'm growing this year has a die back mechanism - as soon as blight spores germinate on the leaves, the leaf dies off and preserves the tuber from infection

Good question - don't know the answer! 

The only way they wouldn't add to the number of blight spores released into the environment would be if they somehow suppress or kill the fungus before it has a chance to reproduce, but I have no idea whether that's the case either.