Vitification Flashcards
(115 cards)
Which one of these is not a reason for selecting a grape variety to grow- Budding times- Rippening times- Leaf colour- Resistance to certain diseases
- Leaf colour
Which vineyard has the aspect to give it the highest amount of sun.North facing slope in the northern hemisphereSouth facing slope in the southern hemisphereNorth facing slope in the Southern hemisphereA flat vineyard at 50° Latitude.
North facing slope in the Southern hemisphere
An aspiring wine maker in Bordeaux decides to create his own version of Cabernet Sauvignon. He polinates a Cabernet Franc with Sauvignon Blanc. The resulting grape is what?Cabernet SauvignonCabernet FrancSauvignon BlancA new grape variety
Cabernet Franc
Whatfactors can affect sunlight?
Latitude - Day length greater further from EquatorSeas,Lakes and Rivers - Near large bodies of water more cloud cover, Centre of landmasses tend to be sunnierAspect - A slopes aspect affect the amount of sunlight, steeper slopes = more benefit
What are the 4 Climate (temp) classifications?
Cool - Av growing season 16.5c or belowModerate - Av 16.5~18.5cWarm - Av 18.5~21cHot - Av above 21c
How does Phylloxera kill vulnerable vines?
It feeds on the roots of the vine allowing infections to set in meaning, over the course of a few years, the vine dies
The Picture Below is an example of what type of training?
Head Training
At what age are most vines replacedWhat are the pros / cons of ‘old vines’
Most replaced between 30~50 YearsOld vines produce higher quality fruit (more concentrated flavour) partly due to lower yield per vine.Lower yield might not be cost efficient andolder vines more susceptible to disease
What climate type is this?High Continentality, low rainfall and a very sunny growing season
Continental
Name 3 diseases that threaten vines and how they are controlled
Powdery and Downy mildew - Likes warm, humid. If affected grapes lose fruity flavour.Powdery treated with sulfur based spray. Downy treated with Bordeaux mixture copper based spray. Can also be managed by canopy management to max air flow * More spraying in Maritime climates where there is more rainfall.Grey rot (Botrytis cinerea) - Likes damp. Taints flavours and colour loss in red grapes. Best managed by canopy management and not picking too late.
New grape varieties can be created through cross pollination. What is ‘cross pollination’?
The pollen from the male part of the flower of one vine is transferred to the female part of the flower on another vine andfertilisation occurs.
Name the 2 most common training techniques for vines
Head training - Little permanent wood (some only trunk), then shoots are trainedCordon training - Trunk plus one or more permanent horizontal arms (cordons). Takes longer to establish but makes mechanisation easier
What climate type is this?Low to medium Contintality, low to medium rainfall mainly in Winter and a sunny growing season
Mediterranean
The following are all examples of what type of climate?Mod -> Chianti, CarnerosWarm ->Chateauneuf, Napa ValleyHot -> Murray-Darling
Mediterranean Climate
Which soil type has the largest warming effect?
Gravel
Which of the following inputs to a vine will vary least from season to season?CO2HeatSunlightNutrients
CO2
Which is not a method of controlling yield in a typical season?Green harvestWinter pruningIrrigationMechanical Harvesting
Mechanical Harvesting
In which regions has Phylloxera not reached?
Chile, some parts of Argentina andSouth Australia. It hasn’t reached due to strict quarantine procedures and inhospitable climate
Why is vine bud management important?
The vine stores Carbohydrates over Winter. If too few buds each will have access to too much energy and will grow too vigorously.If too many buds, each will not have access to enough energy and the vine will struggle to ripen its crop load.
What are the 3 ways to grow grapes to reduce intense chemical usage?
Sustainable agriculture - Chemicals permitted but minimised by growers understanding life cycles of pests and introducing predators of the pests. Monitor weather to prevent pest or disease before it occurs.Organic agriculture - Small doses of traditional treatments permitted only.Biodynamic agriculture - Organic practices + philosophy and cosmology. Cycles of planets, moon and stars plus homeopathic treatments.
Put the growth cycle in orderVeraison, Budburst, Flowering, Fruit set, RipeningBudburst, Flowering, Fruit set, Veraison, RipeningBudburst, Flowering, Veraison, Fruit set, RipeningBudburst, Veraison, Flowering, Fruit set, Ripening
Budburst, Flowering, Fruit set, Veraison, Ripening
How can VSP (Vertical Shoot Positioning) be used in hot, sunny climates and why would a grower choose to use this system?
The method is adapted so the tops of the shoots are not tied but allowed to flop over creating some shade in the canopy to protect fruit. A grower would choose this system to enable mechanical harvesting.
Frost flows in a similar way toIceWaterSteam
Water
Describe the annual cycle of vineSpringLate Spring / Early SummerAs Summer progressesLate Summer / Early AutumnLater in Autumn
Spring - Budburst, new shoots begin to growLate Spring - The vine flowers and small grapes formSummer - Grapes grow but still hard in texture, high acid/low sugarLate Summer/Early Autumn - Grapes ripen, sugar rises, acidity drops and flavours develop. Marked by grape colour change; véraisonLater in Autumn - Grapes harvested