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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Research Unit » Research » Publications at this Location » Publication #243700

Title: Field Monitoring for Grapevine leafroll virus and Mealybug in Pacific Northwest Vineyards

Author
item SKINKIS, P - Oregon State University
item DREVES, A - Oregon State University
item WALTON, V - Oregon State University
item Martin, Robert

Submitted to: Oregon State University Extension Publications
Publication Type: Other
Publication Acceptance Date: 5/23/2009
Publication Date: 7/9/2009
Citation: Skinkis, P.A., Dreves, A.J., Walton, V.M., Martin, R.R. 2009. Field monitoring for Grapevine leafroll virus and mealybug in Pacific Northwest Vineyards. Oregon State University Extension Publications. EM 8985.

Interpretive Summary: This document focuses on the in-field identification of symptoms associated with Grapevine leafroll-associated viruses and the insects that vector them. This can be used as a guide for preliminary scouting of vineyard blocks that may be suspected to have GLRaVs, and should be used in conjunction with online references listed at the end of this document. There has been a recent increase in concern for the spread of viruses in vineyards of the Pacific Northwest. This concern is heightened by the increasing incidence and spread of viruses and insect vectors in the California grape industry to our south. Viruses can cause decreases in fruit quality, vine health and can compromise vineyard longevity and sustainability. A damaging combination in vineyards worldwide is grapevine viruses and the insects that vector (transmit) the viruses. When vectors were present, virus incidence in vineyards increased from 10% to greater than 90% over a ten year period. To prevent movement of virus and vectors into the region, producers should be equipped to do preliminary scouting to identify virus symptoms and insect infestations.

Technical Abstract: There has been a recent increase in concern for the spread of viruses in vineyards of the Pacific Northwest. This concern is heightened by the increasing incidence and spread of viruses and insect vectors in the California grape industry to our south. Viruses can cause decreases in fruit quality, vine health and can compromise vineyard longevity and sustainability. A damaging combination in vineyards worldwide is grapevine viruses and the insects that vector (transmit) the viruses. When vectors were present, virus incidence in vineyards increased from 10% to greater than 90% over a ten year period. To prevent movement of virus and vectors into the region, producers should be equipped to do preliminary scouting to identify virus symptoms and insect infestations. This document focuses on the in-field identification of symptoms associated with Grapevine leafroll-associated virus and the insects that vector it. This can be used as a guide for preliminary scouting of vineyard blocks that may be suspected to have GLRaVs and should be used in conjunction with online references listed at the end of this document.