|
Research 2002
University of Nebraska
Viticulture Program
Research News 2002
Sponsored by
University of Nebraska Viticulture Program
Institute of Agriculture and Natural Resources
Cooperative Extension Division and the
Nebraska Winery and Grape Growers Association
Weed Management Trial
Initiated May 3, 2000, James Arthur Vineyards
Raymond, NE
______________________________________________________________________________
Mean Weed Control Rating z
|
Treatment |
Rating on
4/24/01 |
Rating on
10/22/01 |
Rating on
4/19/02 |
|
Control (no weed control) |
3.0 |
1.6 |
1.5 |
|
Herbicide Control (Roundup, Rely) |
3.5 |
5.3 |
3.6 |
|
Landscape fabric alone |
7.9 |
8.0 |
8.4 |
|
Landscape fabric plus prairie hay |
8.8 |
8.3 |
8.3 |
|
Landscape fabric plus wood chips |
7.9 |
8.3 |
7.0 |
|
Prairie hay y |
8.0 |
7.0 |
7.1 |
|
Wood chips x |
6.8 |
5.8 |
5.0 |
|
Mechanical (hoe, weed whip) |
6.1 |
7.6 |
2.5 |
z Rating scores of 1 to 9, with 1 = no weed control and 9 = total weed
control.
y Prairie hay was applied as segments from bales, approximately three
inches thick.
X Wood chips were applied to a depth of approximately four inches.
_________________________________________________________________________________________
University of Nebraska Viticulture Program Studies
at James Arthur Vineyards
Weed Management Trial (see data sheet and observe the results
first-hand).
Rootstock Research
Row Middle Growth Suppression Study
The Rootstock Study, initiated in 1999, involved ‘Gewurztraniner’ on six
different rootstocks in three vineyards (Nemaha, Peru and James Arthur
Vineyards). The study is still ongoing with ‘Gewurztraniner’ at Nemaha and Peru,
but severe winter damage has dictated a makeover of the test at JAV. New
cultivar/rootstock combinations are now replacing the original study, with
results anticipated for observation in future years.
The Row Middle Growth Suppression Study shows minimal differences because
of the dry weather (drought is a highly effective growth retardant!).
_________________________________________________________________________________________
Table 1. A Quick Comparison of Grape Cultivar and Breeding Line
Survival/Vigor Ratings by Location,
Spring 2001and Spring, 2002 (Second set of numbers under Nemaha Vineyard).
Ratings 1 to 9, with
1 = dead and 9 = all buds alive and breaking.
|
Cultivar |
Kimmel Vineyard |
Nemaha Vineyard
2001 2002 |
Pawnee Vineyard |
|
Bianca/3309 |
6.0***# |
5.8***# |
8.0 |
1.0*** |
|
Cabernet Franc |
|
2.3* |
6.3 |
3.8* |
|
Catawba |
4.1***# |
5.8***# |
6.0 |
1.9*** |
|
Cayuga White |
3.8*** |
4.4***# |
7.5 |
3.5*** |
|
Chambourcin |
4.5** |
6.8* |
6.5 |
5.0* |
|
Chambourcin/3309 |
4.4** |
7.0** |
5.5 |
5.4** |
|
Chardonnay |
|
3.0* |
7.6 |
3.4* |
|
Chardonel |
5.4** |
5.9** |
6.7 |
5.7** |
|
Cynthiana/Norton |
6.6** |
5.9** |
8.5 |
7.4** |
|
deChaunac |
|
8.1* |
8.9 |
7.8* |
|
Delaware |
|
8.1* |
8.8 |
7.8* |
|
Edelweiss |
8.6** |
7.8** |
8.9 |
8.1** |
|
Esprit |
|
5.7**# |
7.6 |
|
|
Frontenac |
8.7** |
8.8* |
8.9 |
8.1** |
|
Lacrosse |
8.7** |
8.7* |
8.4 |
7.4* |
|
Lemberger |
3.4** |
5.6** |
8.3 |
5.0** |
|
Leon Millot |
7.4*** |
6.1**# |
9.0 |
6.2* |
|
Marechal Foch |
|
6.8**# |
8.8 |
5.3*# |
|
Merlot |
|
3.7* |
7.6 |
4.1* |
|
Niagara |
6.0*** |
6.9***# |
8.2 |
2.5*** |
|
Petite Jewel |
|
3.8**# |
|
|
|
Pinot Gris |
|
3.0* |
6.4 |
2.2* |
|
Pinot Noir |
|
2.2* |
4.3 |
2.7* |
|
Riesling |
|
5.9** |
8.1 |
4.5** |
|
St. Croix |
8.9** |
8.7** |
8.8 |
8.5** |
|
Seyval Blanc |
|
6.8* |
6.8 |
6.6* |
|
Shiraz |
|
3.0* |
4.4 |
2.2* |
|
Traminette |
3.8** |
4.6** |
8.6 |
5.8** |
|
Trollhaugen |
|
7.2***# |
5.1 |
|
|
Valiant |
|
|
|
4.8*** |
|
Vidal Blanc |
4.7*** |
2.2***# |
8.0 |
4.2*** |
|
Ventura |
|
7.3**# |
6.5 |
|
|
Vignoles |
8.2** |
8.1**# |
8.9 |
8.0** |
|
Viognier |
|
1.4* |
1.2 |
3.1* |
| |
|
|
|
|
|
ES 2-1-9 |
|
5.3**# |
5.1 |
|
|
ES 3-24-7 |
|
6.2**# |
7.2 |
|
|
ES 5-4-29 |
|
5.5***# |
7.6 |
|
|
ES 6-1-43 |
|
4.3**# |
5.6 |
|
|
ES 10-18-30 |
|
7.1**# |
5.8 |
|
|
ES 7-4-76****# |
|
|
9.0 |
|
|
MN 1131 |
|
5.9***# |
8.0 |
|
|
MN 1166 |
|
7.6**# |
8.3 |
|
|
MN 1197 |
|
7.2***# |
7.8 |
2.4***# |
|
MN 1198 |
|
6.1***# |
7.0 |
1.1***# |
|
MN 1200 |
|
8.1**# |
7.1 |
|
|
MN 1211 |
|
8.0**# |
7.1 |
|
| |
|
|
|
|
|
NY GR7 |
|
7.6***# |
7.3 |
2.8*** |
|
NY 789 |
6.5***# |
6.3***# |
8.3 |
|
|
NY 62.122.1 |
|
3.8***# |
6.7 |
|
|
NY 73.136.1/5c |
6.3***# |
4.9***# |
7.3 |
|
* = Planted in 1998
** = Planted in 1999
*** = Planted in 2000
**** = Planted in 2001
# = Based on only one 6-plant replication; all others based on two or
more 6-plant replications.
._______________________________________________________________________________________
Table 2. Bud-break Comparisons of Grape Cultivar and Breeding Lines by
Location, Spring 2002
Ratings 1 to 6, with 1 = tight; 2 = slight swelling; 3 = swollen, fuzzy; 4
= some green showing;
5 = bifurcation of the bud; 6 = leaves distinctly visible, shoots elongating.
Note: Because data were taken on different dates, compare only for
cultivars in a specific
vineyard (vertical columns).
|
Cultivar |
Kimmel z
Vineyard |
Nemaha y
Vineyard |
Pawnee x
Vineyard |
Peru w
Vineyard |
|
Bianca/3309 |
|
5.6***# |
|
|
|
Cabernet Franc |
|
3.9* |
5.1* |
|
|
Catawba |
|
4.5***# |
3.8*** |
|
|
Cayuga White |
|
3.8***# |
4.2*** |
|
|
Chambourcin |
1.9** |
2.4* |
4.0* |
1.7 |
|
Chambourcin/3309 |
1.5** |
1.8** |
3.8** |
1.5 |
|
Chardonnay |
|
4.4* |
4.8* |
|
|
Chardonel |
1.8** |
2.5** |
4.3** |
1.8 |
|
Cynthiana/Norton |
2.5** |
4.1** |
4.4** |
2.0 |
|
deChaunac |
|
5.8* |
5.9* |
|
|
Delaware |
|
3.7* |
5.6* |
|
|
Edelweiss |
3.4** |
4.8** |
5.6** |
3.3 |
|
Elvira |
|
|
5.2 |
|
|
Esprit |
|
4.3**# |
|
|
|
Frontenac |
1.8** |
3.8* |
5.2** |
2.0 |
|
Gewurztraminer |
|
5.5 |
4.8** |
|
|
LaCrosse |
2.3** |
4.9* |
5.3* |
2.5 |
|
Lemberger |
2.1** |
4.9** |
5.5** |
3.3 |
|
Leon Millot |
|
5.7**# |
5.5* |
|
|
Marechal Foch |
|
5.9**# |
5.6*# |
|
|
Merlot |
|
4.1* |
3.7* |
|
|
Niagara |
|
5.3***# |
|
|
|
Petite Jewel |
|
5.1**# |
|
|
|
Pinot Gris |
|
1.6* |
4.7* |
|
|
Pinot Noir |
|
3.0* |
4.7* |
|
|
Riesling |
|
4.6** |
5.1** |
2.8 |
|
Rougeon |
|
|
3.9 |
|
|
St. Croix |
3.2 ** |
4.7** |
5.6** |
2.5 |
|
Seyval Blanc |
|
2.2* |
3.4* |
|
|
Shiraz |
|
2.1* |
|
|
|
Traminette |
1.7** |
3.8** |
4.1** |
1.8 |
|
Trollhaugen |
|
4.8***# |
|
|
|
Valiant |
|
|
4.6*** |
|
|
Vidal Blanc |
|
3.7***# |
3.3*** |
|
|
Ventura |
|
4.0**# |
|
|
|
Vignoles |
|
3.7**# |
4.3** |
1.3 |
|
Viognier |
|
4.0*v |
4.0* |
|
| |
|
|
|
|
|
ES 2-1-9 |
|
4.9**# |
|
|
|
ES 3-24-7 |
|
3.6**# |
|
|
|
ES 5-4-29 |
|
3.9***# |
4.8 |
|
|
ES 6-1-43 |
|
4.7**# |
|
|
|
ES 10-18-30 |
|
5.0**# |
|
|
|
ES 7-4-76 |
|
4.3****# |
|
|
| |
|
|
|
|
|
MN 1131 |
|
4.7***# |
|
|
|
MN 1166 |
|
4.8**# |
|
|
|
MN 1197 |
|
5.8***# |
|
|
|
MN 1198 |
|
5.6***# |
|
|
|
MN 1200 |
|
4.5**# |
|
|
|
MN 1211 |
|
5.8**# |
|
|
| |
|
|
|
|
|
NY GR7 |
|
5.7***# |
|
|
|
NY 789 |
|
4.3***# |
|
|
|
NY 62.122.1 |
|
4.7***# |
|
|
|
NY 73.136.1/5c |
|
4.7***# |
|
|
* = Planted in 1998
** = Planted in 1999
*** = Planted in 2000
**** = Planted in 2001
# = Based on only one 6-plant replication; all others
based on two or more 6-plant replications.
Z = Data taken 4/17/02
Y = Data taken 4/18/02
X = Data taken 4/24/02
W = Data taken 4/16/02
 | V = All plants dead but 1 |
| 
University of Nebraska
