When I grew a large plot of potatoes, yukon gold and kennebecs, one end of plot scabby and other was not. This had been a horse paddock recently with manure just a few months old, to older.
Apparently pH of soil can help. Lower pH inhibits scab but makes potatoes prone to other serious problems.
Hence the hours of collecting info on scab resistant varieties.
Seems resistence can vary by area planted, as well.
Looks like only by trial will we find what works.
Good luck !!!
Last edited by Black Krim; February 22, 2020 at 07:41 PM.
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