From Vaughn Walton, Assistant Professor, Horticultural Entomology at Oregon State University:

With harvest coming closer, the risk of spreading contaminants is increased.  In order to limit this risk, we have compiled a document in combination with industry.  Carefully read through the attached document requested by growers in the Oregon Wine Industry. 

Please keep in mind that this document is a working draft.  I/We believe that this document will guide us on the first steps towards cleaner plant materials.  Please feel free to comment and make contributions, I appreciate your input and support in this regard. This document is being prepared for publication as an OSU extension document, and is merely released earlier in order to be available in a timely manner.  Also, feel free to distribute this document to anyone you think may benefit from this information.

waltonv@hort.oregonstate.edu
 

Downloads: 

Prevention and Management of Grapevine Leafroll Virus and Mealybugs in Oregon Vineyards