Port Flashcards
How did trade wars between England and France in the 17th century lead to the production of Port?
- England increased trade with Portugal
- Dry red wines from Portugal became popular in England
- Wines were fortified to stabilize them during journey to England
- Sweet wines fortified during fermentation were found to be of higher quality
What did the Methuen Treaty of 1703 do?
It lowered excise taxes in England on Portuguese goods below any other country
Who were the first big shippers of Port?
Kopke, Warre, Taylor, Croft, Quarles Harris
How did the role of a shipper change?
Shippers traditionally took a commission for shipping wine abroad, or bought wine from broker’s to store in “lodges” before shipment.
Most shippers have become large producers of Port, owning vineyards and winemaking facilities.
What role has the city of Vila Nova de Gaia played in the supply chain of Port?
It is where many of the lodges for storage have been built, right across the river from Porto
From which river does Porto get its name?
The river Douro de Porto
What was the result of Port’s popularity in the 17th and 18th centuries?
Large amounts of poor quality Port began being produced, and demand slumped as a result
What was done to combat lowering demand in Port due to poor quality?
- Vineyards were officially demarcated in 1756
- Production regulations were put in place
- Creation of the Companhia Geral da Agricultura das Vinhas do Alto Douro (AKA Real Companhia Velha)
Who was responsible for the creation of the Companhia Geral da Agricultura das Vinhas do Alto Douro?
The Prime Minister at the time, Marquês de Pombal
What was the role of the Companhia Geral da Agricultura das Vinhas do Alto Douro?
- Any Port intended for export needed to be purchased from them
- Price fixing
- Exclusive right to supply fortifying spirit
Why did the Port industry consolidate in the 19th century?
- Economic hardships (Peninsular wars, Portuguese civil war, Phylloxera) forced many smaller growers and producers to sell their land/facilities
- Large shipping companies began establishing their own quintas
What was established in the 1930’s in effort to reorganize the Port industry?
The Casa do Douro was established in 1932
The Instituto do Vinho do Porto (IVP) was established in 1933
What is the role of the IVP?
Administration and supervision of the Port industry
What is the role of the Casa do Douro?
Supervision of growers within the Port demarcated territory
What was one key aspect of Port production that the Casa do Douro and IVP initially had control over?
They controlled the purchase of Aguardente
What is the name of the vineyard classification system in the Douro?
The Beneficio system, created in the 1930’s and remaining in place today.
Rates vineyards from A-I based on suitability for producing Port
How did the World Bank affect the quality of Port in the early 1980’s?
It offered low interest loans to growers willing to plant/replant up to 10 ha of vineyards.
Land needed to be graded A or B and growers could only plant with 5 varieties
Who funded a vineyard research program with the Universidade do Porto?
A group of major shippers including Ramos Pinto, Ferreira, and Cockburn’s.
2,500 ha planted on patamares with prescribed varities
When did Portugal enter the EU? How did this affect Port production?
1986
Producers of Port could buy aguardente on the open market, leading to higher quality aguardente and Port
What controversial move did the Casa do Douro make in 1990?
It bought a 40% share of one of the largest shippers, Royal Oporto, in order for growers to trade their own products. Unsuccessful, the Casa do Douro was bankrupt within a few years.
What interprofessional body was created to supervise Port and Douro wine producers?
Instituto dos Vinhos do Porto e do Douro (IVDP).
It’s creation reflected the growing importance of dry, unfortified wines from the Douro
What have been some continuing developments in Port within the 21st century?
- Improved version of patamares
- Introduction of other grape varieties
- Long term population decline has lead to more mechanization (foot treading)
Where is the Douro Valley located in Portugal?
In the Northeast corner
How large (in ha) is the Douro DOC? How much of that land is under vine?
250,000ha within DOC
41,000 ha of vines are planted, 33,000 are registered for Port production (DO Porto)
What kind of climate exists in the Douro Valley?
Hot continental
40°C (104°F) in summer, freezing in the winter
What mountains help shelter the Douro Valley from the Atlantic?
The Serra do Marão and Montemuro
How far from the Atlantic Ocean is the Douro Valley located?
70km on the western end
The Douro Valley is broken into which three subregions (West to East)?
- Baixo Corgo
- Cima Corgo
- Douro Superior
What is the climate like in Baixo Corgo?
Cooler and wetter (900mm rain annually)
- Mostly grown for production of inexpensive ruby and tawny port
What is the climate like in Cima Corgo?
Warmer and drier than Baixo Corgo (700mm rain annually)
- Most well known producers have vineyards here
- Grapes used to make age indicated tawny and vintage ports
What is the climate like in Douro Superior?
Hottest and driest (450mm rain annually)
- Drought is a common issue
- Low density plantings
- Plantings are increasing in flatter areas that allow for mechanization
What can create variation in topography, aspect, temperature, and elevation within the Douro Valley?
Tributaries spread along the river
Where do Douro vineyards range in altitude?
150-900m above sea level
What tributary of the Douro joins it within the Baixo Corgo subregion?
Rio Corgo (north)
What tributaries of the Douro join it within the Cima Corgo subregion?
- Rio Távora (South)
- Rio Pinhão (North)
- Rio Tua (North)
What tributaries of the Douro join it within the Douro Superior subregion?
- Rio Teja (South)
- Rio Sabor (North
- Rio Côa (South)
What are the main cities within Baixo Corgo?
- Regua
- Vila Real
What is the main city within Cima Corgo?
Pinhão
What kind of soils exist in the Douro Valley?
Stony, shallow top soils
- Poor in nutrients
- Free draining
- Limit vine vigour
Schist bedrock
- Layered vertically
- Water percolates easily
- Vines can penetrate deep into bedreock
Is irrigation allowed in the Douro Valley? Who regulates this?
Yes, but only in periods of extreme hydric stress caused by drought
The IVDP used to require growers to seek permission before irrigating. In 2019 it was changed so growers don’t need permission, but they do need to notify the IVDP when they choose to irrigate
How do irrigation regulations affect the boundaries of the Port region?
The boundaries mostly follow the outlines of Schist bedrock, which allows for more natural water storage.
The neighboring bedrock, granite, has poor permeability and makes it difficult for vines to survive
Why are vineyard layout choices limited along the Douro?
The slope gradient is often over 30%, or a slope of 17%.
What are the three kinds of vineyards layout used in the Douro?
- Socalcos
- Patamares
- Vinha ao Alto
What is a Socalco?
The traditional planting layout in the Douro
- Long, thin terraces (containing 1-2 rows of vines) supported by a rock wall
- higher density plantings of up to 6,000 vines/ha
- Not suitable for mechanization (especially maintenance of rock walls), and not typically used for new plantings
If socalcos are more labor intensive and costly to maintain, why can’t they be converted to another layout?
The socalcos of the Douro are protected by UNESCO
On some larger socalcos, it is possible to replant at a low enough density for tractors to enter the terrace
What are patamares?
- Terraces supported by steep earth banks rather than stone walls
What are the pros/cons of planting on patamares over socalcos?
Pros
- Easier mechanization than socalcos (small tractors can run on diagonal tracks)
- Easier to establish and maintain than socalcos
Cons
- Lower density (3,000-3,500 vines/ha) because the earth banks take up more space
- Prone to weed growth and erosion
What are the two kinds of patamares?
- Larger, wider (two rows of vines)
- Narrow (one row of vines)
Pros/cons of larger, wider patamares?
Pro
- More efficient use of land (two rows of vines rather than one)
Cons
- Uneven ripening (exterior row will receive more sunlight)
What are the pros/cons of more modern, narrow patamares?
Pro
- Often use laser technology to provide precise construction
- Tilted down slightly towards hill (better for water absorption and preventing erosion)
- Sloped along the terrace, which helps draining winter rainfall
- More even ripening than 2-row patamares
Con
- More expensive to build (more modern technology)
- Lower yields/ha due to one row
What is Vinha ao Alto?
A vineyard layout where vines are planted vertically up and down the slope, not along the contour
Pros/Cons of Vinha ao Alto?
Pro
- Higher planting density (5,000 vines/ha)
- Easier to farm mechanically
- Least expensive option to plant and maintain
Cons
- Limited use (only on slopes of less than 40%
- Water runoff and erosion are significant issues
What kind of vine training systems are allowed in the Douro?
Flexible
-Head trained, cane pruned
- Cordon trained, spur pruned
VSP for canopy management
- Easier for mechanization
What kind of rootstocks are commonly used in the Douro?
Drought tolerant rootstocks
110R & 113P, both hybrids of V. rupestris and V. berlandieri
What decisions are crucial when replanting vineyards for Port production?
- Increase vine density?
- Vine layout (mechanization?)
- Variety and rootstock?
How does the topography of the Douo Valley affect planting decisions?
Significant changes in topography over small areas means that varieties planted can vary within small distances (even in the same terrace)
What are maximum allowed yields for Port wine?
55 hl/ha
Due to limited water availability as well as disease/hazards, yields in some years can be as low as 30 hL/ha
What kinds of hazards does the Douro Valley face?
Largely, few hazards
- Spring frosts at higher elevations
Baixo Corgo (furthest west) sees more
- Wetter, cooler weather in early summers can disrupt flowering/fruit set
- Downy Mildew
- Botrytis
How are Downy Mildew and Botrytis combated?
- Canopy management
- Spraying fungicide
Why is weed management particularly difficult in the Douro?
Mowers won’t necessarily have space on narrow terraces
Herbicides used when mowers can’t fit
Why are cover crops important for Vinha ao Alto layouts?
- Reduce presence of weeds
- Help prevent erosion
- Improve soil structure and nutrition
What is a larger trend in vineyard management within the Douro?
A movement towards organic farming practices (even with the larger growers)
Some gaining official certification
What large challenge do growers in the Douro currently face at harvest?
A lack of labor
- Aging rural population
- Machine harvesting is often not possible due to topography
What is Symington Family Estates and what have they been developing?
The largest grower in the Douro Valley
They’ve been developing a machine harvester adapted to steep-slope viticulture since 2015
Why is harvest spread out over weeks in the Douro? Where does it start/end?
- Hand harvesting a majority of the fruit
- Many small microclimates
- Range of different varieties (over 100 different varieties permitted for Port production)
Douro Superior harvests first, ending with Baixo Corgo
What are the five main varieties being researched and planted for Port production?
- Touriga Franca
- Tinta Roriz
- Tinta Barroca
- Touriga Nacional
- Tinto Cão
Despite the focus on the main five varities, why are many small growers continuing to plant with other indigenous varieties?
- Tradition of field blends within the region
- Producers experimenting with lesser-known varieties that can contribute to the blend (eg. acid, color…)
- Indigenous varieties may show more potential in the era of climate change
Why are blends of different varieties potentially advantageous to producers of Port?
- Reduced vintage variation
- Field blends (harvested all at once) can show a distinct character from individual blocks all picked at optimum ripeness before blending
What are Vinha Velha and what are they used for?
Old vines
- Sometimes up to 100 years old
- Generally a key part of premium/super-premium wines
- Some shippers release wines exclusively from old vine fruit as rare collector’s items
What are the key characteristics of Touriga Franca? (4 total)
Most planted variety in the Douro by far
- Late ripening, ideal for warmer sites (low altitude, south facing)
- Thick skin (fungal disease resistant)
- High vigor generally requires summer pruning
What does Touriga Franca contribute to a blend in Port? (5 total)
- Color
- Tannin
- Acid
- Juicy black and red fruit flavors
- Floral Aromas
What are 2 other names for Tinta Roriz?
- Tempranillo in Spain
- Aragonez in other areas of Portugal
What are the key characteristics of Tinta Roriz? (5 total)
- Early ripening
- Susceptible to water stress
- Most successful in cooler vineyard sites
- High yielding, and needs to be restricted for adequate concentration
What does Tinta Roriz contribute to a blend in Port? (2 total)
- Color
- Body
What are the key characteristics of Tinta Barroca? (4 total)
- Very early ripening
- Susceptible to heat damage and grape shriveling
- Better on cooler sites (high altitude/north facing), most commonly in Baixo Corgo and Cima Corgo
- High yielding, needs more careful management
What does Tinta Barroca contribute to a blend in Port? (3 total)
- More earthy in character
- Loses color quickly
- Can lack acid if planted in too hot of a location
What are the key characteristics of Touriga Nacional? (5 total)
- Mid-ripening
- Thick skins
- Vigorous, needs careful canopy management in summer
- Susceptible to coulure, and resulting low yields
- Highly structured wines, often a large component of long-matured Ports
What does Touriga Nacional contribute to a blend in Port? (4 total)
- High Acid
- High Tannins
- Deep color
- Black fruit and floral character
What are the key characteristics of Tinta Amarela? (4 total)
(AKA Trincadeira in Alentejo)
- Tight bunches, prone to fungal disease
- Full bodied
- Black fruit and spices
- Approachable in youth, but have potential to age
What are the key characteristics of Tinto Cão? (7 total)
- Low yielding
- Late ripening
- Small bunches, thick skins
- Resistant to fungal disease
- Very heat tolerant
- High acid
- Capacity for aging well
What are the key characteristics of Sousão? (2 total)
Becoming increasingly popular
- High acid
- Deep color
How many key white grapes are there for Port production?
Two
- Malvasia Fina
- Moscatel Galego Branco