Potato diseases are a constant menace to the Utah potato crop. During the 4-year period from 1920 to 1924 losses sustained from disease averaged 19.5 per cent, or approximately one-fifth of the entire state crop. This means that every year a large percentage of the seed planted is useless and that one-fifth of every acre planted to potatoes is wasted. Again, labor in the way of planting and in cultivation is used to poor advantage, and finally the grower suffers a direct financial loss which frequently eats up his expected profit.
Richards, B. L., "Circular No. 60 - Seed-Potato Treatment: For the Control of Four Common Diseases Rhizoctonia, Scab, Blackleg, Dry-Rot" (1926). UAES Circulars. Paper 44.