New Zealand Flashcards
Land under vine in New Zealand
38,000ha
Cool, maritime climate means what for NZ wine styles?
Refreshing, strongly varietal white wines, eg Sauvignon Blanc
NZ SB style
Unoaked, dry
Pronounced green fruit, tropical
High acid
First half of 20th century: most NZ wines made in what style
Fortified, labelled “Port” or “Sherry”
Established dairy industry meant what for NZ farmers turning to wine?
High levels of safety and clealiness were second nature -> hygiene, temperature control -> clean, consistent and reliable wines
How has NZ wine grown since 1981?
Huge growth!
1981: only 5,000ha, exports of 6,000hl
Now: 38,000ha, exports of 2.7million hl
Sauvignon Blanc accounts for what % of plantings in NZ?
Two-thirds
What separates NZ’s North and South Island?
Cook Strait
NZ is surrounded by what ocean?
South Pacific Ocean
What effect does that Pacific Ocean have on NZ?
Cools temperature
Maritime climate (except Central Otago, semi-continental)
How does climate vary accross NZ’s islands?
South Island is generally cool
Some parts of North Island (Auckland and Gisborne) have moderate climate -> lower latitudes
NZ’s vineyards mostly on what side of the islands?
East
Southern Alps protect South ISland from excessive rains and Orevailing wind from Tasman sea
Significant aspects of NZ’s climate
High UV radiation
Long hours of sunlight
Large dirunal range
Comment on UV radiation in NZ?
Up to 40% higher than equivalent in Northern Hemisphere
Hole in ozone layer and low levels of air pollution
Enhance colour and tannin
High UV radiation in NZ. So what?
Can enhance colour and tannin development in black grapes
NZ’s South Island has a big diurnal range. So what?
Helps preserve acidity in grapes
NZ has extended daylight hours at southerly latitude. So what?
Increase the viable ripening period
-> grape growing possible where otherwise it would be too cool
Why is canopy management important in NZ?
- more than enough rain
- high levels of UV
- long sunshine hours
- fertile soils
otherwise: excessive veg growth, too much shading, reduction in yield and quality
Vine training height in NZ
Generally higher than European cool climate
-> Don’t need to be close to ground (enough sunlight)
-> High fruit zone easier to hand-harvest
Account for high yields in NZ
Sufficient rain
Plentiful sun
High nutrient levels
Planting density in NZ
Generally low
2,000-2,500 v/ha
Average yield in NZ
High
70hl/ha
Lot of rain in NZ. So what?
Humidity -> fungal disease
(particularly warmer North Island)
Why do birds thrive in NZ? So what?
Very few natural predators
Cause damage in vineyards: eat grapes, damage bunches -> bacteria, fungal
Use netting and bird scarers
Despite high rain, there is some irrigation in NZ. Why/where?
Free draining alluvial soils
Strong winds -> increase evapotranspiration
How can NZ growrs protect against wind? But what problem does that lead to?
Use trees as a windbreak
BUT
Birds love trees -> damage vineyards
High UV in NZ can cause what problem?
Sunburn
Leaf positioning -> shade for the grape bunches
NZ is relatively exposed in South Pacific Ocean. So what?
Unsettled weather
Tropical cyclones etc
Potentially disrupt flowering, harvest, reduce yields and quality
Sustainable cert programme in NZ
Sustainable Winegrowing New Zealand
% of certified organic vineyard in NZ?
Just 5%
but wide interest in it
also: Sustainable Winegrowing New Zealand
Organic % in Central Otago? (5% average in NZ)
17%
Most planted grape in NZ?
Sauvignon Blanc
62% of plantings
Top white and black grape in NZ
Sauvignon Blanc
Pinot Noir
Top three white grapes NZ
Sauvignon Blanc
Chardonnay
Pinot Gris
Top three black grapes NZ
Pinor Noir
Merlot
Syrah
How does NZ Sauvignon Blanc achieve ist pronounced style?
Low ferment temperature
Neutral vessel (stainless)
Cultured yeasts -> aroamtics
NO MLF -> preserve acid, prevent dairy notes
When might NZ SB be chaptalised?
Beginning of fermentation if a cool year or early harvest
Ascorbic acid used for what in NZ SB?
Antioxidant
it and SO2 used to keep fresh after bottling
NZ SB: factors in vineyard that ensure ripe fruit?
High light levels
Enough water (inc. irrigation)
Careful canopy management
High diurnal range means what for marlborough SB?
Long growing season -> intense aromas, high acid
Shady vs. sunny side of canopy: what effects on Marlboroguh SB?
Sunny side: fully ripe fruit, tropical flavours
Shady side: more green pepper, grass aromas
Why might a Marlborough SB grower pick slightly early?
If they want herbaceous aromas
Mechanical harvest slightly crushes SB grapes en route to winery. So what for Marlborough style?
Skin contact with juice
-> higher level of herbaceous aroma
NZ SB in winery: why/how minimise oxygen contact?
refrigerating fruit -> preserve primary fruit aromas
Temperature/vessel for NZ SB ferment? So what?
Low temperature, stainless steel
-> retain primary fruit
MLF in NZ SB? Why?
Typically NO!
Preserve high acid
Retain primary fruit
Is there lees ageing in NZ SB? Why/why not?
Minimal, ie 2-3 months, in stainless steel
-> retain primary fruit
How does NZ SB producer preserve freshness after bottling?
Ascorbic acid and SO2 at bottling
Bottling under screwcap
Typical style of Marlborough SB is pronounced with primary fruit. What’s the increasingly popular alternative? How is it achieved?
Barrel ferment
Lees stirring
Partial or full MLF
Oak maturation
Maybe skin contact
Typical red winemaking for high volume, fruity NZ wine
Mid-range termperature
Cultured yeasts
Neutral vessels
-> high volume, fruity wines
Premium NZ Syrah or Pinot: what does whole bunch do?
Gives a herbal or floral note
Why might a NZ producer cold macerate Pinot Noir before ferment
Premium wine
Extract more colour and aromas
Premium NZ red typically aged in what?
French oak barrique (Cabernet, Merlot)
Larger oak (Pinot Noir)
How can a NZ producer make a sweet wine?
Noble rot (premium Semillon, Riesling)
Long hang times -> late harvest
Stop ferment w/ SO2 and filtration -> leave RS
What % of NZ wine is under screwcap?
90%
including premium examples
Account for popularity of screwcap in NZ?
Historically high TCA levels
Premox
Bottle variation
New Zealand Screwcap Wine Seal Initiative 2001
Three sub-regions of Greater Auckland?
Waiheke Island
West Auckland
Matakana
Which island is Greater Auckland on?
North Island
Climate in Greater Auckland? So what?
Moderate maritime
High humidity
-> fungal disease
What style of wine is made in Waiheke Island?
Red wines from Cabernet Sauvignon or Syrah
Island slightly warmer than most of Auckland
-> low diurnal range
-> mid- to late-ripening black varieties ripen fully
Waiheke Island: red wine style
medium to full body
black fruit
oak spice
can be outstanding
Waiheke Island producers include…
Man O’ War
Stonyridge
Best-known producer in West Auckland
Kumeu River
Vineyard land in West Auckland not increasing (and will decrease). Why?
High cost of land in area
Increasing ubranisation
Which island is Auckland on?
North Island
Which island is Gisborne on?
North Island
Gisborne: land under vine halved 2009-2019. Why?
Fruit farmers get higher prices for kiwis and apples
Topography for most of Gisborne?
Flat, fertile floodplain (clay, loam, silt)