p1. climate Flashcards
Climate Change Impact on Vineyards
OIV Report 2023
Vine yield 7% lower than previous year, worst since 1961 due to frost, heavy rainfall, and drought.
how much water does a vine need
600 ml aprox
vigour, evaporation, dry farming, stress, root, nutrient intake, rootstock
Climate spatial and temporal scales
Short term and localized (hail, frost)
Decades- Climate variability (drought, warm periods)
Long term and global (warming, precipitation patterns)
DROUGHT- Catalonia 2023
54% less. ->25% less crops
legal issues issues
Torres- Freixenet
technology for water monitoring
Fruition science US- sap flow- Miguel galet reduces 60% water demand
ideal temperatures are
bud burst >10C
Polinization >15
Flowering>20
Ripening 15-21C
More than 40C vine shuts down
Climate change prediction
Oxford companion: growing-season temperatures will increase by 2.0 ºC/3.6 ºF by 2050
heat
bruce Tyrell Uses kaolin clay up to 40°C.
Steve Lohr, Paso Robles: Uses shade cloth to retain 5-10% higher yields and prevent fruit desiccation.
Heat resistan varieties
Koerner-
Vermentino (thick leaves),
Mourvèdre (deep roots).
Ian Hongell, Torbeck: Opposes changing established methods, maintains bold style.
David Forrer MW, Priorat: Uses biochar for water retention; focuses on carinena/mazuelo for their drought and heat resilience.
drough-Rootstocks
bastian Labbe, Santa Rita: Replanted CS on 100R - Miguel Galet, Ventisquero: Notes excessive vigor and more water demand with 110R.
Climate change consequences
Pro: expands wine map.
Taittinger in UK
More altitude-Catena 1400 Adriana. Canopy management shading
DRY FARMING
Tablas creek-paso robles- Bio-Regenerativewho transitiones into dry farming in the last decades in CA
Slopes/Evapotranspiration
20%
