| Winegrowing - |
September/October 1999
|
Tables for:
Evaluation of Cabernet Sauvignon: three vine spacings, two trellis systems;
Oakville district, Napa Valley
By Don Williams and Richard Arnold,
Robert Mondavi Inc., Oakville, CA
|
| Table 1: Vine spacing treatments |
| Treatment Name |
Vine spacing
(vine x row) |
Trellis system |
Number vines/acre |
Area per vine
(sq.meters) |
| Close |
1 x 1 meter |
Single VSP |
3928 |
1.0 |
| Moderate |
1.0 x 1.8 m |
Single VSP |
2178 |
1.8 |
| Wide |
1.5 x 2.7 m |
Single VSP |
968 |
4.1 |
| Lyre |
1.5 x 2.7 m |
Lyre with VSP |
968 |
4.1 |
|
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| Table II: Average vine growth
date (1992-1998) |
| Treatment Name |
Shoot #
per vine |
Shoot weight
(g) |
Pruning wt.
per vine (kg) |
Pruning wt.
per meter
cordon (kg) |
Pruning wt.
per meter 2
of soil |
| Close |
8.7c |
44.1 b |
.40c |
.40 |
.40 |
| Moderate |
11.7c |
58.0 ab |
.69b |
.69 |
.38 |
| Wide |
16.6b |
63.2 a |
1.08a |
.72 |
.27 |
| Lyre |
26.4a |
50.9 ab |
1.35a |
.45 |
.33 |
| (LSD, .05) |
4.0 |
16.0 |
0.3 |
|
|
|
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| Table III: Leaf area
measurements ( averages 1992-1995, 1998) |
| Treatment Name |
Node number
per main shoot |
Main shoot leaf.
size (cm2) |
Total leaf area
per shoot (m2) |
Percent lateral
leaf area |
| Close |
15.4 b |
114.6 a |
.28 a |
24.4 a |
| Moderate |
18.5 a |
129.7 a |
.32 a |
18.6 a |
| Wide |
18.7 a |
127.4 a |
.34 a |
17.5 a |
| Lyre |
18.4 a |
121.3 a |
.28 a |
12.8a |
| (LSD, .05) |
2.0 |
28.0 |
.10 |
15.0 |
|
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| Table IV: Vine yield components (averages
1992 - 1998) |
| Treatment Name |
Cluster
number per vine |
Cluster weight
(kg) |
Berry weight
(g) |
Number of
berries per
cluster |
Crop weight
(kg/vine) |
Calculated
tons per acre |
| Close |
13.1 c |
.119c |
1.07a |
111 c |
1.57d |
6.8 a |
| Moderate |
19.5 c |
.150 b |
1.11 a |
135 b |
2.92 c |
7.0 a |
| Wide |
29.5 b |
.177 a |
1.16 a |
154 a |
5.25 b |
5.6 a |
| Lyre |
42.7 a |
.154 b |
1.17 a |
132 b |
6.56 a |
7.0 a |
| (LSD, .05) |
7.0 |
0.02 |
0.10 |
17.0 |
1.10 |
2.0 |
|
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| Table V: Average canopy to crop
ratios |
| Treatment Name |
Crop weight:
pruning weight |
Leaf area:
crop weight
(cm2/g) |
| Close |
4.1 a |
15.2 a |
| Moderate |
4.4 a |
14.2 a |
| Wide |
5.2 a |
11.9 a |
| Lyre |
5.1 a |
11.6 a |
| (LSD, .05) |
1.37 |
4.51 |
|
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Table VI: 110R and 5C rootstock comparisons
of parameters exceeding
10 percent (All vine spacings and trellis systems average together) |
| Rootstock |
Cluster
weight (kg) |
Crop weight to
pruning weight ratio |
% lateral
leaf area |
Leaf area to crop
weight ration (cm2/g) |
| 110R |
.143 |
4.4 |
19.3 |
13.5 |
| 5C |
.157 |
5.0 |
17.3 |
12.0 |
|
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| Table VII: Average analysis of last berry
samples prior to harvest, 1992 - 1998 |
| Treatment name |
Malic acid (g/l) |
Tartaric acid (g/l) |
Arginine (ppm) |
| Close |
1.7 |
6.5 |
105 |
| Moderate |
1.8 |
6.5 |
105 |
| Wide |
1.7 |
6.7 |
101 |
| Lyre |
1.9 |
6.4 |
81 |
|
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| Table VIII: Average wine analysis values,
1992-1998 |
| Treatment |
Alcohol |
TA (g/l) |
pH |
K+ |
Total phenolics
(A280) |
Color
intensity |
| Close |
13.2 |
5.1 |
3.87 |
1490 |
55.7 |
8.9 |
| Moderate |
13.2 |
5.3 |
3.88 |
1507 |
56.6 |
9.03 |
| Wide |
13.4 |
5.3 |
3.81 |
1393 |
54.9 |
9.33 |
| Lyre |
13.4 |
5.1 |
3.89 |
1512 |
55.4 |
9.03 |
|
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