Publication 360, Fruit Production
Recommendations:
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Pub
360, Fruit Production Recommendations > Chapter
6: Grapes > Table 6-5. Relative Susceptibility of Grape Cultivars
to Diseases
|
Excerpt from Publication 360, Fruit Production Recommendations 2010-11,
To order this publication
Table
of Contents
- Table 6-5. Relative Disease Susceptibilities of Grape Cultivars
- Other grape calendar sections
- Bud burst to first leaf
- First leaf, 1.25-5.0 cm shoot length
- 3-5 leaves unfolded, 10-15 cm shoot length
- Shoot length, 20-25 cm
- Trace bloom (first cap fall)
- Immediate post-bloom to early fruit set
- Berries pea-sized
- Berry touch to cluster closure
- Beginning of ripening (veraison) through harvest
- Special sprays (when
monitoring indicates the need)
- Other topics on grapes
- Grape calendar (PDF 172 kb)
- Pub 360 - Chapter 6 Grapes (PDF 225 kb)
- Related Links
Table 6-5. Relative Susceptibility of Grape Cultivars to Diseases
Table 6-5. Relative Disease Susceptibilities, provides a relative rating of grape variety susceptibility based on observations in Ontario and northeast United States under average conditions. Under adverse weather conditions, such as extended cool weather, any given variety may be more seriously affected.
| Eutypa dead arm | Phomopsis cane blight | Black rotb | Downy mildew | Powdery mildew | Botrytis bunch rot | Phytotoxic chemical sensitivityc | |
|---|---|---|---|---|---|---|---|
| Auxerrois | - | ++ |
-
|
+
|
+++
|
+++
|
|
| Cabernet Franc | - | ++ |
+++
|
++
|
+++
|
+
|
|
| Cab. Sauvignon | ++ | ++ |
+++
|
++
|
+++
|
+
|
|
| Chardonnay | + | ++ |
+++
|
+++
|
++++
|
+++
|
3
|
| Gamay | + | + |
++
|
++
|
+++
|
++
|
|
| Gewurztraminer | ++ | - |
+++
|
++
|
+++
|
+++
|
|
| Merlot | - | + |
+++
|
++
|
+++
|
++
|
5
|
| Pinot Blanc | - | - |
+++
|
++
|
+++
|
+++
|
|
| Pinot Gris | - | - |
+++
|
++
|
+++
|
+++
|
|
| Pinot Noir | - | - |
+++
|
++
|
+++
|
+++
|
|
| Riesling | + | + |
+++
|
++
|
+++
|
+++
|
|
| Sauvignon Blanc | - | - |
++
|
++
|
++
|
+++
|
|
| Zweigeltrebe | - | ++ |
+++
|
++
|
+++
|
+
|
|
Note: Vinifera varieties not listed are considered susceptible to powdery
mildew, downy mildew and black rot.
Susceptibility rating:
- unknown
+ slight
++ moderate
+++ high
++++ extreme.
b - Black rot is more serious adjacent to bush or similar
areas with poor air drainage.
c - Sensitive to:
1 = Sulphur
2 = Dikar + Zolone combination
3 = Dikar
4 = Thiodan/Thionex
5 = Copper
6 = Flint and Pristine
These notes are based on grower experience and could vary under stress conditions. No entry in this column indicates that no chemical sensitivity has been observed.
| Eutypa dead arm | Phomopsis cane blight | Black rotb | Downy mildew | Powdery mildew | Botrytis bunch rot | Phytotoxic chemical sensitivityc | |
|---|---|---|---|---|---|---|---|
| Baco Noir | - | ++ |
+
|
+
|
++
|
+++
|
4
|
| Chambourcin | - | + |
++
|
++
|
++
|
+
|
1, 4
|
| De Chaunac | + | +++ |
+
|
+
|
++
|
+
|
1
|
| Frontenac* | ? | + |
++
|
+
|
+++
|
+
|
|
| Marechal Foch | ++ | ++ |
+
|
+
|
++
|
+
|
1, 2, 3
|
| Seyval Blanc | - | ++ |
++
|
++
|
+++
|
+++
|
|
| S.V. 23-512 | - | + |
-
|
-
|
++
|
-
|
|
| Vidal 256 | - | + |
+
|
++
|
++
|
+
|
5
|
* denotes American Hybrid, all the rest are French Hybrids
Susceptibility rating:
- unknown
+ slight
++ moderate
+++ high
++++ extreme.
b - Black rot is more serious adjacent to bush or similar
areas with poor air drainage.
c - Sensitive to:
1 = Sulphur
2 = Dikar + Zolone combination
3 = Dikar
4 = Thiodan/Thionex
5 = Copper
6 = Flint and Pristine
These notes are based on grower experience and could vary under stress conditions. No entry in this column indicates that no chemical sensitivity has been observed.
| Eutypa dead arm | Phomopsis cane blight | Black rotb | Downy mildew | Powdery mildew | Botrytis bunch rot | Phytotoxic chemical sensitivityc | |
|---|---|---|---|---|---|---|---|
| Concord | + | ++ |
++
|
++
|
++
|
+
|
1, 4, 5, 6
|
| Elvira | +++ | +++ |
++
|
+
|
++
|
++
|
5
|
| Fredonia | + | ++ |
++
|
+++
|
++
|
+
|
|
| Himrod* | - | + |
++
|
+
|
++
|
+
|
|
| N.Y. Muscat | + | - |
+
|
+
|
++
|
+
|
2
|
| Niagara | ++ | ++ |
+++
|
+++
|
++
|
+
|
5
|
| Sov. Coronation | - | + |
-
|
++
|
+++
|
-
|
|
* denotes American Hybrid, all the rest are Labrusca type.
Susceptibility rating:
- unknown
+ slight
++ moderate
+++ high
++++ extreme.
b - Black rot is more serious adjacent to bush or similar
areas with poor air drainage.
c - Sensitive to:
1 = Sulphur
2 = Dikar + Zolone combination
3 = Dikar
4 = Thiodan/Thionex
5 = Copper
6 = Flint and Pristine
These notes are based on grower experience and could vary under stress conditions. No entry in this column indicates that no chemical sensitivity has been observed.
Related Links
- Grapes in Ontario
- Integrated Pest Management (IPM)
- Pesticide Application and Safety
- Pesticide Companies and Agents
- Search the PMRA website
- Ontario Minor Use Program
- OMAFRA Publication 505: Ontario Weeds
- OMAFRA Publication 75: Guide To Weed Control: Grapes
For more information:
Toll Free: 1-877-424-1300
Local: (519) 826-4047
E-mail: ag.info.omafra@ontario.ca
| Author: | OMAFRA Staff |
|---|---|
| Creation Date: | 23 July 2007 |
| Last Reviewed: | 09 August 2010 |