Vineyard


Vineyard

A vineyard is a plantation of grape-bearing vines, grown mainly for winemaking, but also raisins, table grapes and non-alcoholic grape juice. The science, practice and study of vineyard production is known as viticulture.

A vineyard is often characterised by its terroir, a French term loosely translating as "a sense of place" that refers to the specific geographical and geological characteristics of grapevine plantations, which may be imparted in the wine. The precise conditions which a vineyard must maintain are often tightly-regulated and in recent years have become the subject of progressive and often radical change.

History

The earliest evidence of wine production dates from between 6000 and 5000 BC. [ [http://www.stonepages.com/news/archives/000498.html 8,000-year-old wine unearthed in Georgia] . Archeology, 2003, Retrieved 24 February 2004.] Wine making technology improved considerably with the ancient Greeks but it wasn't until the end of the Roman Empire that cultivation techniques as we know them were common throughout Europe. R. Phillips "A Short History of Wine" pg 37 Harper Collins 2000 ISBN 0060937378 ]

In medieval Europe the Christian Church was a staunch supporter of wine, which was necessary for the celebration of the Catholic Mass. During the lengthy instability of the Middle Ages, the Christian monasteries maintained and developed viticultural practices, having the resources, security, stability and interest in improving the quality of their vines. They owned and tended the best vineyards in Europe and "vinum theologium" was considered superior to all others.
European vineyards were planted with a wide variety of the "Vitis vinifera" grape. However, in the late 19th century, the entire species was nearly destroyed by the plant louse "phylloxera" accidentally introduced to Europe from North America. Native American grapevines include varieties such as "Vitis labrusca", which is resistant to the bug, but produce wines with a foxy, animal-like taste. "Vitis vinifera" varieties were saved by being grafted onto the rootstock of native American varieties, although there is still no remedy for "phylloxera", which remains a danger to any vineyard not planted with grafted rootstock.

The oldest productive vineyard in the world is claimed to be located in Maribor, Slovenia, based largely on the celebrated "Stara trta", a 400-year-old grapevine which grows there and was recognized as the oldest living example by the "Guinness Book of Records" in 2004."Oldest vineyard", by Inventory of Slovenian Heritage, Ljubljana, 1988]

Modern practices

The quest for vineyard efficiency has produced a bewildering range of systems and techniques in recent years. Due to the often much more fertile New World growing conditions, attention has focussed heavily on managing the vine's more vigorous growth. Innovation in "palissage" (training of the vine, usually along a trellis, and often referred to as "canopy management") and pruning and thinning methods (which aim to optimize the Leaf Area/Fruit (LA/F) ratio relative to a vineyard's microclimate) have largely replaced more general, traditional concepts like "yield per unit area" in favor of "maximizing yield of desired quality". Many of these new techniques have since been adopted in place of traditional practice in the more progressive of the so-called "Old World" vineyards. [Robert Jackson, [http://books.google.com/books?id=9En27zEnVgwC&pg=RA1-PA99&dq=leaf+area/fruit+ratio&ei=J0jYRqHoFY7G7ALerIHSAg&sig=AIeJE48rbdurBVmgiv3KUQhBFZQ#PRA1-PA99,M1] "Wine Science: Principles, Practice, Perception", pp 99-100]

Other recent practices include spraying water on vines to protect them from sub-zero temperatures (aspersion), new grafting techniques, soil slotting, and mechanical harvesting. Such techniques have made possible the development of wine industries in New World countries such as Canada. Today there is increasing interest in developing organic, ecologically sensitive and sustainable vineyards. Biodynamics has become increasingly popular in viticulture. The use of drip irrigation in recent years has expanded vineyards into areas which were previously unplantable. As a consequence of irrigation, yields are more consistent and vintage years virtually irrelevant. [ [http://www.houdeks.com/LEARN_WINE/viticulture.html Learn Wine from Houdek's] ] For well over half a century Cornell University, the University of California at Davis, and California State University at Fresno, among others, have been conducting scientific experiments to improve viticulture and educating practitioners. The research includes developing improved grape varieties and investigating pest control. The International Grape Genome Program is a multi-national effort to discover a genetic means to improving quality, increasing yield and providing a "natural" resistance to pests.

The implementation of mechanical harvesting is often stimulated by changes in labor laws, labor shortages, and bureaucratic complications. It can be expensive to hire labor for short periods of time, which does not square well with the need to reduce production costs and harvest quickly, often at night. However, very small vineyards, incompatible widths between rows of grape vines and steep terrain hinder the employment of machine harvesting even more than the resistance of traditional views which reject such harvesting.Fact|date=August 2007

Current trends

Numbers of New World vineyard plantings have been increasing almost as fast as European vineyards are being uprooted. Between 1990 and 2003, U.S. vineyards increased from convert|292000|acre|km2 to convert|954000|acre|km2, while Australian vineyard numbers more than doubled from convert|146000|acre|km2 to convert|356000|acre|km2 and Chilean vineyards grew from convert|161500|acre|km2 to convert|415000|acre|km2.Fact|date=July 2007 The size of individual vineyards in the New World is significant. Europe's 1.6 million vineyards are an average of 0.2 square kilometres each, while the average Australian vineyard is 0.5 square kilometres, providing considerable economies of scale. Exports to Europe from New World growers increased by 54% in the six years up to 2006. [ [http://lifeandhealth.guardian.co.uk/drink/story/0,,2118898,00.html Grown in Italy, pressed in Sweden, sold as chianti. Europlonk nouveau has arrived, Ian Traynor and David Gow,The Guardian July 5, 2007] ]

There are also changes in the kinds of grapes grown. For example, in Chile, large areas of low-quality grapes have been replaced with such grapes as Chardonnay and Cabernet Sauvignon. Grape changes are often in response to changing consumer demand but sometimes result from vine pull schemes designed to promote vineyard change. Alternatively, the development of "T" budding now permits the grafting of a different grape variety onto existing rootstock in the vineyard, making it possible to switch varieties within a two year period.Fact|date=July 2007

Local legislation often dictates which varieties are selected, how they are grown, whether vineyards can be irrigated and exactly when grapes can be harvested, all of which in serves to reinforce tradition. Of course, changes in the law can change which grapes are planted. For example, during Prohibition in the U.S. (1920-1933), vineyards in California expanded sevenfold to meet the increasing demand for home-brewing. However, they were largely planted in varieties with tough skins that could be transported across the country to home wine-makers and the resulting wine was of low quality.Fact|date=July 2007

Leading wine critic Robert M. Parker, Jr. has had a significant influence on viticulture around the world. His taste preferences have led many growers in Bordeaux, for example, to practice "green harvesting," in which whole grape clusters are removed and discarded during the growing season in order to reduce yields. Also, because of Parker's influence, many growers now strip sections of leaves away from vines to permit more direct sunlight to reach the grapes.Fact|date=July 2007

Terroir

Terroir refers to the combination of natural factors associated with any particular vineyard. These factors include such things as soil, underlying rock, altitude, slope of hill or terrain, orientation toward the sun, and microclimate (typical rain, winds, humidity, temperature variations, etc.) No two vineyards have the exact same terroir, although any difference in the resulting wine may be virtually undetectable.

Vineyards are often on hillsides and on soil of marginal value to other plants. A common saying is that "the worse the soil, the better the wine." Planting on hillsides, especially those facing south, is most often in an attempt to maximize the amount of sunlight that falls on the vineyard. For this reason some of the best wines come from vineyards planted on quite steep hills, conditions which would make most other agricultural products uneconomic. The stereotypical vineyard site for wine grapes (in the Northern hemisphere) is a hillside in a dry climate with a southern exposure, good drainage to reduce unnecessary water uptake, and balanced pruning to force the vine to put more of its energy into the fruit, rather than foliage.

ee also

* List of wine producing regions
* Winemaking
* International Grape Genome Program
* List of vineyard soil types

References

* Echikson, Tom. "Noble Rot". NY: Norton, 2004.
* Robinson, Jancis (Ed.) "The Oxford Companion to Wine". Oxford, England: Oxford University Press, second edition, 1999.
* cite book
last = Jackson
first = Ronald S.
authorlink =
title = Wine Science: Principles, Practice, Perception
year = 2000
publisher = Elsevier 2000
location = United States
id = ISBN 012379062X
quote =

External links

* [http://www.francemalbec.com/?article24 Story of a vineyard: Cahors]
* [http://www.officialwinery.com/winery US Vineyard and Winery Directory]
* [http://www.oznet.ksu.edu/library/hort2/mf2699.pdf Weed Control in the Grape Vineyard]


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