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ournal of
the
A
merican
P
omological
S
ociety
Table 4. Effects of cluster thinning with one (CP1), two (CP2) or three (CP3) clusters per shoot on vegetative growth, yield parameters
and fruit quality of ‘Blanc Du Bois’ in 2013 and 2014.
Year
Treatments
Leaf
area
(cm
2
)
LAI
z
Shoot
length
(cm)
Pn
y
before
harvest
(µmol•m
-
2
•s-
1
)
Pn after
harvest
(µmol•m
-
2
•s
-1
)
Clusters
/vine
Yield
(Kg)/
vine
Cluster
weight
(g)
Berries/
cluster
Berry
weight
(g)
Soluble
Solids
(°Brix)
TA
x
(%)
pH
2013
CP1
z
27.20
3.17
34.99
10.32
6.02
8.27 b
w
0.39 b
42.9
25.30
1.65
14.57 a
0.70 3.59
CP2
26.95
3.28
31.99
11.01
6.51
15.00 ab
0.77 ab
50.17
32.44
1.62
13.31 ab 0.79 3.48
CP3
30.16
2.99
39.25
11.80
6.31
16.79 b
1.04 a
49.76
30.15
1.58
12.75 b
0.75 3.49
2014
CP1
70.40
2.96
47.52
8.48
6.70
15.85
1.05
84.28
49.37
2.00
14.22
0.07 3.33
CP2
86.23
3.20
44.15
8.28
7.33
23.71
1.56
77.47
42.99
1.88
13.58
0.70 3.25
CP3
76.71
2.34
41.88
7.84
6.86
16.56
1.14
68.50
43.04
1.75
13.02
0.73 3.21
z
LAI: Leaf area index
y
Pn: Photosynthesis rate
x
TA: Titratable acidity
w
Means followed by different letters within a column indicate significant differences as determined by Tukey’s HSD at
α
=0.05.
Table 4:
Effects of cluster thinning with one (CP1), two (CP2) or three (CP3) clusters per shoot on vegetative growth, yield parameters and fruit quality of ‘Blanc Du
Boisʼ vines in 2013 and 2014.
z
LAI: Leaf area index
y
Pn: Photosynthesis rate
x
TA: Titratable acidity
w
Means followed by different letters within a column indicate significant differences as determined by Tukey's HSD at =0.05.