Response of Sunmuscat (Vitis vinifera L.) to Varying Cane Numbers When Managed on a Shaw Swing-Arm Trellis for Dried Grape Production
Table 2
Effect of varying cane number and season on fresh berry mass and composition, yield components of dried fruit at harvest, dried fruit colour, and moisture content of Sunmuscat over three seasons (2003/04–2005/06).
Cane number
Season
6 canes
9 canes
12 canes
15 canes
2004
2005
2006
Fresh berry
Fresh berry mass (g)
2.63b
2.57ab
2.47a
2.49a
2.57b
2.22a
2.84c
TSS (°Brix)
25.2c
24.8bc
24.2a
24.1a
25.5b
24.2a
23.9a
Sugar/berry (g)
0.66b
0.64b
0.60a
0.60a
0.66b
0.54a
0.68b
Titratable acidity (g/L)
7.32
7.37
7.37
7.43
6.79b
9.00c
6.32a
pH
3.58b
3.56ab
3.55a
3.54a
3.63b
3.41a
3.63b
Dried fruit
Dried yield/vine (kg)
8.58a
9.49b
9.65b
9.97b
8.37a
10.9b
9.05a
Bunch number1
126a
142a
162b
170b
155
—
145
Dry berry mass (g)
0.75b
0.69a
0.68a
0.69a
0.75c
0.66a
0.70b
Fresh : dry mass ratio
3.51a
3.72c
3.63b
3.61b
3.43a
3.36a
4.06b
Bunch mass (g)1
57.3
58.7
55.5
53.8
55.4
—
57.3
Berries/bunch1
76.4
85.1
81.6
77.9
73.9
—
81.9
L value
29.4
29.6
29.6
29.8
31.8c
29.8b
27.2a
a value
4.03
4.11
4.03
4.15
2.93a
3.22a
6.09b
b value
12.9
13.4
13.3
13.7
15.8c
13.2b
10.9a
Moisture (% wet wt.)
15.3
15.0
14.9
15.1
12.4a
14.4b
18.5c
Mean values followed by different letters are significantly different (,n = 8) using Fisher’s LSD. Interactions between treatments and season were not significant. 1Seasons 2003/04 and 2005/06 only. n = 8.
