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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

1

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