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Crabapple (Malus spp.) — Cultivar Susceptibility |
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|
Cultivar |
Apple Scab |
Fire Blight |
Powdery Mildew |
Reference |
|
Adams |
M-H1 |
H |
H |
A, B, C |
|
Bob White |
H |
M-H |
H |
A, B, E |
|
Centennial* |
H |
H |
? |
C, E |
|
Chestnut* |
M-H |
? |
? |
C |
|
Christmas Holly |
H |
H |
H |
A, B, C, D |
|
David |
H |
H |
H |
A, B, C, D |
|
Dolgo* |
L-M |
M-H |
H |
A, B, C, E |
|
Donald Wyman |
M-H |
H |
H |
A, B, C |
|
M. floribunda |
H |
H |
H |
A, C |
|
German* |
M-H |
? |
? |
C |
|
Indian Magic |
M |
H |
H |
A, B |
|
Indian Summer |
H |
H |
H |
A, C, D |
|
Jewelberry |
H |
H |
H |
A, B, C, D |
|
Manchurian |
? |
L |
? |
— |
|
Martha Dolgo* |
L |
? |
? |
C |
|
Molten Lava |
H |
H |
H |
A, B, C |
|
Ormiston Roy |
H |
L-H |
H |
A, B, C, E |
|
Prairie Fire |
M-H |
H |
H |
A, C, D |
|
Professor Sprenger |
H |
H |
H |
A, B, C, D |
|
Profusion |
H |
H |
M |
A, B, D |
|
Ralph Shay* |
M-H |
H |
L |
A, B, C, D |
|
Red Jewel |
H |
H |
H |
A, B |
|
M. sargentii |
M-H** |
H |
H |
A, B, C, D |
|
Silver Moon |
M-H** |
L-H |
H |
A, B, C, D, E |
|
Snowdrift |
M-H |
L |
H |
A, B, C, D |
|
Sugar Tyme |
M-H |
H |
H |
A, B, C, D |
|
M. tschonoskii |
H |
H |
H |
A, C, D |
|
Weeping Candied Apple |
M |
? |
? |
C, D |
|
White Angel |
H** |
H |
H |
A, B, C, D |
|
Whitney* |
M-H |
? |
? |
C |
|
M. x zumi var. calocarpa |
M-H |
H |
H |
A, B, C |
|
*Fruit is edible **Have remained scab free in Wooster, Ohio for over 33 years. 1H = High disease resistance; some leaves may be affected. M = Moderate disease resistance; leaves and shoots affected but no defoliation. L = Low disease resistance; heavy infection, defoliation. ? = Information not available. References (A) Benson, D.M. and B.I. Daughtry. 1993. Crabapple.In: Biological and Cultural Tests for Control of Plant Diseases. St. Paul, MN: APS Press. H = 0-1; M = 2; L = 3-4 in the evaluation of Benson et al. (B) Hartman, J., J. Doney, and R. McNiel. 1991. Crabapple. In: Biological and Cultural Tests for Control of Plant Diseases. St. Paul, MN: APS Press. H = 0-2; M = 3; L = 4 in the evaluation of Hartman et al. (C) Norton, R.A. and J. King. 1993. Crab Apples Revisited. Washington Park Arboretum Bulletin 55:10-13. (D) Unpublished field evaluations from the Pacific Northwest. (E) van der Zwet, T., Orolaza-Halbrendt, N. and Zeller, W. 2012. Fire Blight: History, Biology, and Management. APS Press.º |
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