Table of apple cultivar susceptibility to the apple powdery mildew fungus, Podosphaera leucotricha
Podosphaera leucotricha  


Table of apple cultivar susceptibility to the powdery mildew fungus, Podosphaera leucotricha

Apple cultivar Powdery mildew
susceptibility ratingz
  Apple cultivar Powdery mildew
susceptibility ratingz
Arkansas Black R   Monroe HS
Ambrosia R   Mutsu (Crispin) S
Arlet S   Niagara R
Baldwin HS   Nittany R
Ben Davis S   Northern Spy S
Braeburn S   Orin S
Britemac HS   Paulared HS
Cameo S   Pinova S
Chinook S   Prima R
Cortland HS   Prime Gold HS
Cox's Orange Pippin S   Princess S
Creston S   Priscilla R
Crimson Crisp HS   Pristine S
Cripps Pink (Pink Lady) S   Puritan S
Dayton R   Quinte S
Delicious R   Redfree S
Empire S   Rhode Island Greening S
Enterprise R   Rome Beauty HS
Fuji R   Runkel S
Gala R   Sansa S
Gala Supreme R   Scarlet O'Hara S
Ginger Gold HS   Senshu S
Golden Delicious S   Shizuka S
Golden Supreme S   Sir Prize R
GoldRush S   Spartan R
Granny Smith HS   Spigold S
Gravenstein Holly HS   Spijon S
Grimes Golden R   Stayman HS
Hampshire S   Summerred S
Honeycrisp S   Suncrisp S
Idared HS   Sundance S
Jerseymac S   Sunrise S
Jonafree R   Twenty Ounce S
Jonagold S   Wayne S
Jonamac S   Wealthy S
Jonathan HS   Wellington S
Julyred HS   Winesap R
Liberty S   Yellow Transparent R
Lodi R   Yataka R
Lord Lambourne R   York Imperial S
Macoun S   Zestar! R
McIntosh S      
Milton 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.

Biggs, A. R., Yoder, K. S., and Rosenberger, D. A. 2009. Relative susceptibility of selected apple cultivars to apple powdery mildew. Plant Health Progress doi:xx.xxxx/PHP-2009-xxxx-xx-RS (submitted for publication).