Wednesday, February 13, 2008

Pinot Grigio - Secondary crop removal

This image shows Marty (the Lane's viticulturalist) showing the team which bunches to remove. Pinot Grigio is highly vigerous and produces a large proportion of secondary crop. Secondary crop refers to grapes that form outside of the normal grape production zone and therefore in areas that are less able to supply the grapes with metabolites to ripen. Therefore secondary crops remain underripe when the rest of the fruit is already ripe. Secondary crops are removed so that photosynthates produced by the plant (like sugars) can concentrate into the better bunches. If secondary crop is included in the harvest the grape juice can be very acidic, unripe and can lead to very hard wines.