ADAPTATION OF VITICULTURE TO CLIMATE CHANGE · PDF file4 Strengthening of plant material (PE1)...
Transcript of ADAPTATION OF VITICULTURE TO CLIMATE CHANGE · PDF file4 Strengthening of plant material (PE1)...
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ADAPTATION OF VITICULTURE TO
CLIMATE CHANGEÁlvaro González, PhD - 30 October 2017
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CENTER FOR RESEARCH AND INNOVATION
VISION
Positioning VCT within a five years period as aleader in R&D in the global wine industry.
• Inaugurated at the end of 2014
• Initial investment (infrastructure)of US$ 5 milllion
•Annual research budget of US$ 2 milllion
MISSION
Promote technology development, applied researchand knowledge transfer in order to make thenational wine industry more competitive.
STRATEGIC ALLIANCES
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CHEMICAL AND MOLECULAR BIOLOGY LABORATORIES
INFRASTRUCTUREAND EQUIPMENT
EXPERIMENTAL WINERY
EXTENSION CENTER
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Strengthening of plant material
(PE1)
Water resourcesand global
climate change(SP2)
Qualityassessment of
grapes and wines(SP3)
Smart wineindustry
(SP4)
New productdesign(SP5)
QUALITY & PRODUCTIVITY
Strengthening of plant material
(SP1)
STRATEGICPROGRAMS
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SP2: WATER RESOURCESAND GLOBAL CLIMATE CHANGE
CRI R&DPROJECTS
• Study of viticultural management to adapt to climate change:
i. Leaf removal strategies and;
ii. Development of GRAPPE smartphone app.
• Study of clones of Cabernet Sauvignon:In order to determine clone adaptation.
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• 4 consecutive seasons: 2012/13 - 2015/16
• Huilquilemu - Maule Valley
• Cabernet Sauvignon
• Leaf removal: different intensity / opportunity
• Use of a sunscreen
LEAF REMOVAL STRATEGIES
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Leaf removal strategies and application of a sunscreen
TREATMENT LEAF REMOVAL MOMENT SUNSCREEN
C0 Control - No
C1 Tunnel + lateral shoot removal Bunch closure No
C2 East side 100% veraison No
C3 Both sides 100% veraison Yes
C4 Both sides 3 weeks before harvest No
C5 Both sides 100% veraison No
MAULE VALLEY EXPERIMENT
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9
0
5
10
15
20
25
30
35
40
0
200
400
600
800
1.000
1.200
1.400
1.600
1.800
2.000
7:51
8:16
8:41
9:06
9:31
9:56
10:2
110
:46
11:1
111
:36
12:0
112
:26
12:5
113
:16
13:4
114
:06
14:3
114
:56
15:2
115
:46
16:1
116
:36
17:0
117
:26
17:5
118
:16
18:4
119
:06
19:3
119
:56
20:2
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Tem
pera
ture
°C
Radi
atio
nµm
ol m
-2 s-
1
Hour
Radiacion IncidenteBarra PAR- C1Barra PAR- C3T° Racimo- C3T° Racimos- C1
29%
4%
LEAF REMOVAL MICROCLIME IMPACT
1010
Morning: - 2 h solar noon
W/
SUN
SCRE
EN
W/
SUN
SCRE
EN
Afternoon: + 2 h solar noon
-1,3°C -2,7°C
THE SUNSCREENDECREASES EXPOSED BUNCH TEMPERATURE
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COLOR**OVER-RIPE FRUIT**
SWEETNESS**
VISCOSITY**PERSISTENCY*
JUICINESS*GLOBAL QUALITY**
C0(Control)
C1(Pea size - Tunnel)
(Veraison - East)C2
C3(Veraison – East & West + Sunblock)
C4(23°Brix - East & West)
C5(Veraison – East & West)
PC2 13%
PC1 73%
2015WINE SENSORY EVALUATION
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Index of exposition variation: (14.77 - 9.83) / 9.83 = 5 0 . 2 5 %
GRAPPE: calculation of the cluster exposition variation during leaf removal.
Before leaf removal After leaf removal9 . 8 3 % 1 4 . 7 7 %
GRAPPE SMARTPHONES APPFOR LEAF REMOVAL MANAGEMENT
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ADAPTATION OF VITICULTURE TO
CLIMATE CHANGEÁlvaro González, PhD - 30 October 2017