Viticulture/Training Flashcards
(34 cards)
When does pruning taking place?
December-March
When is bud break?
March
3-4 weeks after shoot growth
When does flowering take place?
May
Inflorescence occurs 6-9 weeks after bud break
Bloom lasts 8-10 days
Early ripening picked 8-10 weeks after flowering
Late ripening 18 weeks
When does leaf pulling, summer pruning take place?
What do green harvests do?
July
Limit yields
When does veraison/ripening take place?
August
When is harvest?
August-September-October
Most picked 45 days after veraison
How long is the growing season?
165-180 days
When is winter pruning?
November
What did replanting post-phylloxera look like?
Opportunity to plant parcels to a single grape variety.
They replanted in rows
What is powdery mildew?
“Odium” A fungal disease that blankets the vine with thick, white filaments
Yields are reduced if outbreak occurs before flowering
What is downy mildew?
“Peronospera” Loves warm, humid weather.
Attacks leaves and stems with oil spots then with white cotton filaments
What is a Bordeaux Mixture?
Copper sulfate application to combat downy mildew
What is an asian fruit fly?
“Drisophila Suzukii They lay eggs in soft fruits and their larva hatch and feed on the pulp
What is Botrytis?
Fungus
“Noble rot”
Mold concentrates sugars
Need cool/moist mornings and warm/dry afternoons
Honey dessert wine
What grapes are most vulnerable to Coulure?
Merlot + Malbec
“Poor fruit set”
Why is the vine pruned?
Maintains size and shape
Limits upcoming yields
Positions the fruit into a specific area
Position of shoots and canes
What does botrytis due to sugar?
Tartaric and malic acid?
Reduce sugar by 1/3
drop T and M acid by 5/6 and 1/3
3 most typical training systems in France?
Guyot
Gobelet
Cordon
Guyot?
Long cane prune method
Horizonal support wire
Gobelet?
Head pruned vines or bush vines, freestanding and no trellis support
For warm/dry coimates
Cordon?
A trunk ands single horizontal permanent arm trained on a support wire
Eventail?
“Fan” 4-5long arms spread out along the trellis in a fan shape
Beaujolais, Savoie, Languedoc
Valled de la Marne?
Resembles double Guyot, except both canes are shunted in the same direction on the trellis wire (vs opposite direction)
Meunier in Champagne
Training in Chablis?
Spur pruned bush vine
Trunk hugs the ground and semi-perm arms spread out from it in the shape of a fan
