Show 11 scab scab is one of the most common potato diseases and all who u ise se or grow potatoes are famil harwith aar with the irregular sore like blotches blotcher blot ches which sometimes sometime es arel are so soT numerous as to sever nearly the whole potato it may only affect the surface or it may penetrate and break down the tissues a almost to the center unlike wart disease which is very hard to combat scab can be held in check very easily clean infected disinfected dis seed will produce a crop that is f free roe of the disease but blat if the fungus once gets into b the soil it will live over the winter and infect the next arop more severely than the prece proceeding eding one if that happens the field should be planted in some other crop and kept free of potatoes lor for probably four or five years since it does not other crops this can be done |