Potato growers in Iowa who have seen scab cut the quality and marketable yields of their potato crop year after year, can prevent serious scab infection by treating potato soil with sulfur. This especially applies to commercial potato production in northern Iowa. Home growers may find the sulfur treatment useful, too.
Hooker, W. J. and Sherf, A. F.
"How to Control Potato Scab,"
Iowa Farm Science: Vol. 5
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol5/iss7/4