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Started by: priscus (inactive)
Black Scurf (Rhizoctonia solani) on mih spuds.
piccy: this stuff
Would not mind, but these were grown in potato growing bags, with commercially purchased compost: they have not come into contact with garden soil. Either seed potato was already infected, or some agent has acted as a disease vector from infected soil.
Replied: 22nd Aug 2016 at 21:03