|
Integrated Management
of Blueberry Diseases
Use of
Disease Resistant Varieties
In an integrated organic disease
management program, the use of varieties with disease resistance must
be emphasized. Blueberry varieties with high levels of resistance to
most of the major diseases are not currently available; however,
several varieties are known to be resistant to some diseases. The
following table provides information on disease resistance in several
of the more common varieties grown in the Midwest.
Table 4. Disease resistance in blueberry
cultivars commonly grown in the Midwest.
Variety |
Mummyberry |
Phomopsis twig
blight and canker |
Fusicoccum canker |
Powdery mildew
|
Anthracnose fruit rot
|
Red ringspot virus
|
Shoestring virus |
|
Berkeley
|
S
|
VS
|
|
R
|
|
|
|
|
Bonus
|
|
|
|
|
|
|
|
|
Bluecrop
|
MR
|
|
MR
|
S
|
MR
|
VR
|
|
|
Bluegold
|
S
|
|
|
|
|
|
|
|
Bluehaven
|
S
|
S
|
|
|
|
|
|
|
Bluejay
|
R
|
|
|
|
|
|
R
|
|
Blueray
|
S
|
|
|
|
S
|
|
|
|
Bluetta
|
S
|
R
|
|
|
|
|
|
|
Burlington
|
R
|
|
|
|
|
|
S
|
|
Chippewa
|
|
|
|
|
|
|
|
|
Collins
|
S
|
|
|
|
|
|
|
|
Coville
|
MR
|
|
MR
|
MR
|
|
|
|
|
Darrow
|
R
|
|
|
|
|
|
R
|
|
Duke
|
R
|
|
|
|
|
|
|
|
Earliblue
|
S
|
S
|
|
R
|
|
|
S
|
|
Elliott
|
R
|
R
|
|
|
R
|
|
S
|
|
Jersey
|
MR
|
VS
|
|
S
|
VS
|
MR
|
S
|
|
Lateblue
|
R
|
|
|
|
|
|
|
|
Little Giant
|
|
|
|
|
R
|
|
|
|
Nelson
|
|
|
|
|
|
|
|
|
Northblue
|
R
|
|
|
|
|
|
|
|
Northcountry
|
|
|
|
|
|
|
|
|
Northland
|
S
|
|
|
|
|
|
R
|
|
Northsky
|
R
|
|
|
|
|
|
|
|
Patriot
|
|
|
|
|
|
|
|
|
Polaris
|
|
|
|
|
|
|
|
|
Rancocas
|
MS
|
|
R
|
R
|
|
|
MS
|
|
Rubel
|
S
|
MR
|
MR
|
|
MS
|
|
S
|
|
Sierra
|
S
|
|
|
|
|
|
|
|
St. Cloud
|
|
|
|
|
|
|
|
|
Spartan
|
MR
|
|
|
|
|
|
S
|
|
Sunrise
|
|
|
|
|
|
|
|
|
Toro
|
|
|
|
|
|
|
|
|
Weymouth
|
S
|
|
|
|
|
|
S
|
VR = very resistant, R =
resistant, MR = moderately resistant, MS = moderately susceptible, and
S = susceptible and VS = very susceptible
Blank areas mean
resistance is not known.
Table prepared by J.
Hancock, E. Hanson, D. Trinka, and A.M.C. Schilder, Michigan State
University.
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