This year I've planted the 'blight resistant' Sarpo Mira potatoes for the the first time to see how they would perform. I've tried a few types of potatoes over the years, mainly King Edward, Desiree and Maris Piper - unfortunately though, they have always succumbed to blight early in the year. (Below - Sarpo Mira still growing well at the end of August / start of September).
When I started on my allotment in 2007 as a complete beginner I was confused by the books telling me to dig up my main crop potatoes in September when on my plot my potatoes (planted in April) would rarely make it past the end of July or the start of August. When I learned a bit more I realised that the dreaded potato blight ensured that the plants would't grow to their full potential.
To combat the smaller potato crop due to growth being curtailed by blight I decided to try Sarpo Mira, a NON-genetically modified potato, in the hope that it would last a few weeks longer so the tubers could put on a bit of weight. (Below - Sarpo Mira have benefited from an extra month growing).
Well has it worked? The answer is a resounding 'yes'. While my neighbours' potatoes have wilted because of the blight, my Sarpo's are still pretty good. There is now evidence of blight on the some of the leaves but the plants don't seem to fully succumb with the majority of stalks still appearing dark green.
I dug a couple of tubers up today and was pleased with the size. Unfortunately, because I planted potatoes after the brassica rotation and the soil was limed, I have quite a bit of scab which I have always suffered from (next year I will alter the rotation sequence), still, the tubers have benefited from an extra month in the ground and are a good size. Sarpo Mira and the other Sarpo derivatives will now be my potato of choice for next season. If you suffer from blight then put Sarpo's on your seed list for 2015. That's it, bye for now ...