Yield (wine) - Yield As An Indication of Quality

Yield As An Indication of Quality

While yield is generally seen as an important quality factor in wine production, views differ on the relative importance of low yields to other aspects of vineyard management. In general, there is consensus that if vines are cropped with a very high amount of grape clusters, a poor wine will result because of slow and insufficient ripening of the grapes, due to an unfavourable leaf to fruit ratio. This is a situation that would typically correspond to yields of, say, 200 hl/ha or more, depending on grape variety and many other factors. Beyond that, there are differing schools of thought. One school of thought, generally subscribed to in France, claims that great red wine is impossible to produce at yields exceeding 50 hl/ha. Another school of thought claims that a yield of 100 hl/ha is possible to combine with high quality, provided that careful canopy management is used. In general, white wine is seen as less sensitive to high yields, and some grape varieties, such as Pinot Noir, as particularly sensitive to overcropping.

Many examples exist where a vintage-to-vintage variation of yields is in fact positively related with quality, since the low yields can be due to loss of grapes due to adverse conditions such as hail or grey rot. For the Bordeaux vintages of the 1980s, it is generally recognised that the most abundant harvests also gave the best vintages.