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Table of apple cultivar susceptibility to the powdery mildew fungus, Podosphaera leucotricha.
(Source of information and credits provided at the bottom of the page.)

Apple cultivar Powdery mildew
susceptibility ratingz
Apple cultivar Powdery mildew
susceptibility ratingz
Arkansas Black R McIntosh S
Baldwin HS Milton S
Ben Davis S Monroe HS
Braeburn R Mutsu (Crispin) S
Britemac HS Niagara R
Cortland HS Nittany R
Cox's Orange Pippin S Northern Spy S
Dayton R Paulared HS
Delicious R Prima R
Empire S Prime Gold HS
Enterprise R Priscilla R
Fuji R Pristine S
Gala R Puritan S
Ginger Gold HS Quinte S
Golden Delicious S Redfree S
Gold Rush S Rhode Island Greening S
Granny Smith HS Rome Beauty HS
Gravenstein Holly HS Sir Prize R
Grimes Golden R Spartan R
Idared HS Spigold S
Jerseymac S Spijon S
Jonafree R Stayman HS
Jonagold S Summerred S
Jonamac S Twenty Ounce S
Jonathan HS Wayne S
Julyred HS Wealthy S
Liberty S Wellington S
Lodi R Winesap R
Lord Lambourne R Yellow Transparent R
Macoun S York Imperial S

zR = resistant. Control only needed under high disease pressure.
S = susceptible. Control usually needed where disease is prevalent.
HS = highly susceptible. Control always needed where disease is prevalent. These cultivars should receive first priority when control is called for.


Data compiled by K. S. Yoder and A. R. Biggs from personal observations and the following sources:

Management Guide for Low-Input Sustainable Apple Production, A publication of the USDA Northeast LISA Apple Production Project and Cornell University, Rodale Research Center, Rutgers University, University of Massachusetts, and University of Vermont. 1990. (Apple disease managment section by D. A. Rosenberger, Cornell University).

A Grower's Guide to Apple Insects and Diseases in the Southeast. 1993. Alabama Cooperative Extension Service, Auburn University, Circular ANR-838. Ed. J. R. McVay, J. F. Walgenbach, E. J. Sikora, and T. B. Sutton.

Aldwinckle, H. S. 1974. Field susceptibility of 51 apple cultivars to apple scab and apple powdery mildew. Plant Disease Reporter 58:625-629.

Yoder, K. S., R. E. Byers, A. E. Cochran II, W. S. Royston, M. A. Stambaugh, and S. W. Kilmer. 1994. Evaluation of scab-resistant apple cultivars for cedar-apple rust and mildew susceptibility. 1992-93. Biological and Cultural Tests for Control of Plant Diseases 9:11.