An association of infection by Sclerotinia sclerotiorum and potassium deficiency in Kennebec potato

Abstract

In a potato fertilizer trial planted with the variety Kennebec a high proportion of the plants in the plots to which no potassium had been applied was infected by the fungus Sclerotinia sclerotiorum (Lib.) de Bary. Potassium chloride reduced the incidence of the disease; sulphate of ammonia increased it.