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Glossaries > Beverages > Oidium
Oily (see also Fat, Glycerin/Glycerol) Off-flavors (also off-aromas or off-nose
Oidium ...

Oidium (oh-ee'-d'yum)
The powdery mildew fungus that devastated the vineyards of Europe in the mid-nineteenth century. Like the phylloxera plague that would follow, Oidium was brought from America. It is now controlled in the vineyard by spraying.
Oloroso (o-lo-ro'-so) ...

Latin for hatred; plant mildew or rot, splits plants and grapes causing immediate death; no harvest possible
Olfactory nerve
Nerve behind the nose used to record senses of smell, fatigues quickly ...

A grape disease caused by a small grey fungus that attacks and dries out grapes. Can be treated with sulphur. Also known as powdery mildew.
Like a bouquet of flowers, describes a wine that is at its best aromatically speaking, and ready to be enjoyed.

Oidium: French word for the fungal vine disease "powdery mildew."
Open-top tanks: Wine tanks without permanent covers, used only for red wine fermentation. Ordinaire: From "vin ordinaire," the term means any common wine of everyday quality.

French name for the fungal vine disease "Downey mildew."
Describes the vaguely fat, slippery sensation on the palate in contact with the combination of high glycerin and slightly low acid content. Mostly encountered in high quality Chardonnays and late harvest sweet wines.

~: French name for the fungal vine disease "Downey mildew."
Oloroso: One of the categories of Spanish Sherry. Olorosos are "bigger" and fuller in body, flavor and sweetness than Fino Sherries.

Fungal disease of grapes, also known as powdery mildew.

~ is a fungal disease, also known as powdery mildew, that almost destroyed the vineyards of Europe in the mid-nineteenth century. It thrives in dampness. To control odium growers apply sulfur.
Old vines ...

Because of the damages made by ~ and phylloxera, viticulturists started cultivating French-American hybrids, such as Baco Noir and Isabella, known for their resistance to those feared diseases, and they started selling the berries of the vine as fruit instead of making wine from it.

Disease of the vine caused by a small mushroom and which results in a gray hue and a drying of the grapes; treats itself by sulphur.
"Office International de la Vigne et du Vin".
International office of the Vine and the Wine.

The Carménère grape has known origins in the Médoc region of Bordeaux, France and was also widely planted in the Graves until the vines were struck with ~.

It was developed in the 1870s by a French horticulturalist, Francois Durif, who crossed Peloursin and Syrah in attempts to create a hybrid that was resistant to the powdery mildew (~) epidemic.

~ and powdery mildew. It became known among growers as a "workhorse grape"
that generate high financial returns and is very reliable and dependable. The
downside is, when Aramon is planted in high yields, the wines which come out of ...

A cool, wet spring and early summer slashed yields and induced mildew and ~ in many vineyards. After a period of unrelenting heat in high summer, a minute but potentially outstanding vintage appeared to be on the cards.

Mildew (~)
This disease infested almost all parts of the vine and the wine got a disagreeable taste. The vines looked like they were dusted with fine flour - therefore the name mildew.
The vine pest (phylloxera)
This pest lives at times underground and sucks on the vine roots.

In climates with summer rainfall, molds such as ~, mildew, white rot, grey rot (see box at left) and black rot may be prevented by regular sprayings of a solution of copper sulfate, slaked lime and water (Bordeaux mixture).

1998 - Difficult weather conditions with both ~ and some hail damage yielded some exotic, atypically rich wines; drink up. Very good in Chablis.

Powdery mildew - One of several fungi that can cause severe damage to grape crops; also called ~.

Fortunately for the Old and New Wine Worlds, the vines left France for South Africa before the dual scourges of phylloxera and ~ in the late 1800's. As the French were recovering from the catastrophe, they chose new clones of the grape varietals they had planted before.

Most of these may be controlled with either sulfur sprays, or by newer "green" methods, such as introducing predacious insects and protective cover crops between vine rows. In climates with summer rainfall, molds such as ~, mildew and white, ...

See also: See also: What is the meaning of Grape, Wine, Region, Vineyard, Red?

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