On 3 Aug 2017 17:52, Bob Hobden wrote:
On 2 Aug 2017 23:09, Janet G wrote:
For the last few years I've grown Sarpo Mira potatoes as blight very badly afflicts other maincrop potato varieties. They have always been successfully blight resistant.
This year, I've had a significant number of Sarpo potato plants (perhaps 10% - 15%) yellowing and showing signs of blight and, even this early, the potatoes from those plants have mushy, smelly cores to them. This seems to affect the big potatoes especially. I'm assuming this is blight and quite bad blight. I wonder whether Sarpo Mira is losing its blight res
i
stance and whether anyone else is growing it and has similar or different experience.

Probably a new strain of Blight like we had a few years ago. Noticed
some of our outdoor Tomatoes have Blight already and we only grow
Blight Resistant varieties, Ferline, Fantasio and Crimson Crush which
again points to a new strain.

Just back from the plot, all the Tomatoes have the Blight and badly
too. Will have to get them all up and destroyed tomorrow. Looks like it
will be the end of outdoor Toms for us.

--
Regards
Bob Hobden