WINES OF THE WORLD 🇺🇸 USA - Oregon Flashcards
(36 cards)
Climate of Oregon
Cool to moderate, some protection from the Pacific Ocean by the Coast Range. High rainfall (mainly during winter). Long daylight hours in the summer and autumn aid grape ripening.
Type of soils in Oregon
Free-draining marine sedimentary, volcanic and loess soils.
Main grape varieties of Oregon
Pinot Noir (Wadenswil and Pommard traditionally, then Dijon), Pinot Gris, Chardonnay (Wente and Clone 108 traditionally, then Dijon).
Key winemaking operations for Pinot Noir wines in Oregon
More use of whole bunch, some use ambient yeasts and experiment with alternative vessels (amphorae).
Key winemaking operations for Pinot Gris wines in Oregon
Whole bunch pressing and cool fermentation to skins contact, old barrels and lees contact.
Key winemaking operations for Chardonnay wines in Oregon
Whole bunch, oak fermentation, malo.
How many AVAs are in Oregon
19 AVAs (15 within the state and 4 across borders).
Name of the multi-state appellations between Oregon-Washington
- Columbia Gorge AVA
- Columbia Valley AVA
- Walla Walla Valley AVA
Columbia Gorge AVA
Multi-state appellation between Oregon-Washington. Along the Columbia River, border between Oregon and Washington, cooler and wetter the W and warmer and drier the E, cooling influence from altitude and winds of the gorge, many varieties.
Columbia Valley AVA
Mainly in Washington, includes Columbia Gorge, Walla Walla Valley and the land between them.
Walla Walla Valley AVA
1/3 in Oregon, arid continental climate, Cabernet Sauvignon, Merlot and Syrah; the Rocks District of Milton-Freewater sub-AVA on basalt stones and graveled silt loam (extra ripeness).
Name of the multi-state appellation between Oregon-Idaho
Snake River Valley AVA
Climate of Willamette Valley
Some protection from cool influence of the ocean by the Coast Range mountains, but various parts are affected by cool winds. The valley is one of the coolest and wettest in Oregon, warm and dry summers. Lack of humidity means a quick rise and fall of temperatures. High diurnal range during growing season.
Main grape varieties of Willamette Valley
Pinot Noir, Pinot Gris, Chardonnay.
Type of soils in Willamette Valley
Fertile loam soils on the valley. Marine sedimentary soils, volcanic basalt and loess soils, at higher altitudes.
Main training systems in Willamette Valley
Large vine training systems (Scott Henry) to manage vigour on the valley, otherwise cordon-trained or replacement-cane pruned with VSP.
How irrigation is managed in Willamette Valley
Irrigation is allowed only for the longest-established producers (no water from the rivers, producers must collect water during winter by ponds), but many producers don’t use it due to high cost compared to the small vineyard owned.
How many sub-AVAs are in Willamette Valley
7
Names of the sub-AVAs of Willamette Valley AVA
- Dundee Hills AVA
- Chehalem Mountains AVA
- Ribbon Ridge AVA
- Yamhill-Carlton District AVA
- Van Duzer Corridor AVA
- Eola-Amity Hills AVA
- McMinnville AVA
Dundee Hills AVA
Sub-AVAs of Willamette Valley AVA. The most well-known AVA, first plantings of Pinot Noir. Volcanic hills with lateral ridges. Vineyards at higher altitudes, warmer temperatures due to the shelter by Coast range and Chehalem Mountains (fully ripeness). The highest % of red iron-rich clay from volcanic basalt.
Chehalem Mountains AVA
Sub-AVAs of Willamette Valley AVA. Defined by a ridge in N Willamette Valley. Spurs, mountains and ridges. Vineyards at 60-305 m (the highest ridge at 500 m serving as a windbreak). Loess, volcanic basalt and sedimentary soils. Diversity in vineyard sites. The most plantings and large number of wineries.
Ribbon Ridge AVA
Sub-AVAs of Willamette Valley AVA. The smallest, low altitude, warm and dry area, sedimentary soil, deep and low nutrients, moderate water-holding capacity. Concentrated ripe grapes.
Yamhill-Carlton District AVA
Sub-AVAs of Willamette Valley AVA. South-facing bowl, series of horseshoe-shaped eroded hills of ancient sedimentary soils. Mainly Pinot Noir. In the foot hills of the Coast Range so rain shadow. Riper fruit flavours, fuller bodied and lower acidity.
Van Duzer Corridor AVA
Sub-AVAs of Willamette Valley AVA. Break in the Coast Range means afternoon winds (can disrupt flowering and fruit set or shut the vine leaf stomata), so slower ripening and low diseases pressure. Soils are marine sediment loam and silt, shallow and well-draining.
