Vini, Viti, Climate, Tasting ect Flashcards
Are there any places in the world today that remain free of phylloxera?
Chile and Some areas in South Australia and Argentina
Of the two main vine species, which is the most widely used around the world for quality wine production?
Vitis vinifera is most used for fine wine grape growing in the world.
What are 2 different ways a vine can be propagated?
Cutting and Layering
What is clonal selection?
When a vine naturally mutates and its new, positive characteristics are propogated by cutting or layering.
Explain grafting.
Grafting is a procedure used to fuse budwood of a desired variety (usually V. vinifera) onto another rootstock (usually a North American vine).
What is head grafting and why is it used?
Head grafting is when a vine’s top, or head, is cut off its trunk and the cutting of a new variety is grafted on to the trunk where the old head was. The purpose of head grafting is to switch out grape varieties instead of uprooting and replanting an entire vineyard. Head grafting will produce fruit the year after the grafting, and it’s a lot less expensive than replanting an entire vineyard with the added bonus of keeping the established trunk and roots.
What is the crossing of Cabernet Sauvignon?
Cabernet Franc x Sauvignon Blanc
What is the crossing of Müller-Thurgau?
Riesling x Madeleine Royale
What is the crossing of Pinotage?
Cinsault x Pinot Noir
Explain the importance of a vine’s leaves.
Leaves are what drive the plant’s growth. Via photosynthesis, leaves use sunshine to convert water and CO2 into the things it needs to grow: glucose and oxygen.
What is transpiration?
Transpiration is the process of how water is absorbed by a vine’s roots, transported throughout the plant, and out of its leaves in vapor form. The warmer the climate, the faster water evaporates from the leaves, which means the vine needs more water from the soil.
What are the buds on a vine?
Buds are primordial shoots found between a shoot and a leaf.
What are some important factors to consider when deciding where to establish a new vineyard?
- Environmental/Climate considerations 2. Trade/Business considerations 3. Which grape(s) to plant?
What are the 2 main types of vine training?
Head training and Cordon Training
What is a synonym for Bush vines?
Gobelet – so called as it is resembles the shape of a wine glass or goblet.
How big is a hectare?
A square stretch of land that has 100-meter sides
1 acre is approximately how many hectares?
1 acre = .4 hectares (or 0,4ha) and Conversely, 1 hectare = 2.47 acres
If a region has good water availability + soil with just-enough nutrients, would it make sense that a vineyard’s planting density be higher or lower?
Higher because with all that water available vines will produce a profuse canopy. Higher density planting increases competition which will curb the vines’ tendency to put all their energy into the canopy.
What does yield measure?
Yield measures the quantity of grapes produced, in weight or volume.
What happens to grapes during berry ripening?
Sugars increase; Acidity levels decrease; Tannins develop and become less astringent.
What is green harvesting and when is it done?
Dropping underdeveloped grape clusters right after véraison. Viticulturists will literally walk their vineyards and cut off immature grape clusters, leaving them on the ground.
How does the vine react if green harvesting is done at the wrong time?
The vine will increase the size of berries on the remaining clusters, which can dilute flavors and increase yield (in weight and/or volume).
What are nematodes, and what damage can they cause to a vine?
Nematodes are microscopic worms that eat the roots of vines, leaving open wounds through which viruses are known to enter.
What are the 3 types of diseases that affect vines?
- Fungal. 2. Viral 3. Bacterial