Grapevine Moth Hopefully In Check

on 12/11/10 at 11:00 am

Wine

Speakers at Napa Viticultural Fair cite limited damage to 2010 wine crop; vigilance still required.

European Grape Vine Moth traps like this one from 2010 are deployed in key areas. (Photo: Jack K. Clark)

Last week at the Napa Valley Grapegrowers’ Viticultural Fair, the organization’s biennial local trade show, Napa County farm advisor Monica Cooper and Napa County assistant agricultural commissioner Greg Clark reported substantial progress in the fight against the latest invasive vineyard pest, which completely devastated some vineyards’ crops in 2009.

No one thinks the war is completely won, but it appears that in only one year, Napa Valley grapegrowers, county officials and University of California farm advisors have turned the European grapevine moth (EGVM) from a huge threat into simply another pest to be monitored.

This insect is especially troublesome because it destroys grapes; Most other pests damage vines but don’t affect current crops.

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