CLEAN AND CERTIFIED VINES: WHERE YOU CAN GET THEM, AND WHY SOURCE - - PowerPoint PPT Presentation

Michelle M. Moyer, Ph.D. Associate Professor Statewide Viticulture Extension Specialist WSU-IAREC

Prosser, WA

World Class. Face to Face.

wine.wsu.edu

CLEAN AND CERTIFIED VINES:

WHERE YOU CAN GET THEM, AND WHY SOURCE MATTERS

Regionalizing Grape Quarantines and Certification Programs in the Pacific Northwest Yakima, WA 1 May 2018

WHAT I MEAN WHEN I SAY:

• Vines testing

negative for known pathogens

• “Clean” is relative to
• ur understanding

and knowledge of different pathogens and diseases

• Certified vines have

been produced under a specified state-sanctioned regime

• Pathogen tests

conducted (on some timeline), along with visual inspections “Clean” Vines Certified Vines

WHY I USE “CLEAN” --- NOT CLEAN

The only true wisdom is in knowing you know nothing.

• Socrates

CLEAN VINES

How and where can I get them?

HOW DOES A PLANT BECOME “CLEAN”?

• “Clean” and certified are not always

synonymous

– You can have certified vines that have virus – You can have “clean”-tested vines that are not certified

• Vines can be “clean” by two means:

– They are “cleaned-up” through protocols followed at foundation services – They were never infected in the first place (how do you know)?

RESOURCES FOR TESTING MATERIALS

• You know by testing

– Foundation-level materials go through a clean-up process, and they and the certification processes in most states test routinely – You can subject your own vines to those same tests!

• Tests are available through foundation

services and several commercial testing laboratories

• You can request what you test for

– What does “clean” mean for you?

CERTIFIED VINES

Where can I get them?

IS WHAT I AM LOOKING FOR CERTIFIED?

• You want to plant a specific variety / clone /

selection

• You also want those vines to be certified
• Where do you start? How do you even know

if that is possible?

– Not all varieties are available as certified vines – Not all certified varieties for use in the PNW will be from the PNW

• Start with foundation programs – they are

the source of all certified-destined materials!

FOUNDATION PLANT SERVICES

http://fps.ucdavis.edu/fgrvarieties.cfm

FOUNDATION PLANT SERVICES

 Great varietal details Interesting selection histories! 

CLEAN PLANT CENTER NORTHWEST

http://cpcnw.wsu.edu/

CLEAN PLANT CENTER NORTHWEST

 A list of nurseries they sell foundation-level materials too PDF lists of available materials

CLEAN GRAPEVINE PROGRAM – MISSOURI STATE

• Only has 7

varieties available

• Certified true-

to-type, and for 9 different viruses

• Specific

selections suited for the Midwest

https://ag.missouristate.edu/cleangrapevine/

STATE-SPECIFIC CONSIDERATIONS

The Washington Perspective

CONSIDER THE SOURCE

• Growing (?) concern in the

state: Crown Gall

– Something that is tested for (but the tests aren’t great) – Most certification programs are only based on visual inspection – Many out-of-state nurseries do not have cold damage (no in-field disease expression)

CONSIDER THE USE

• Grafting-Over
• Scion is certified?

Awesome!

• Did you test the

rootstock too?

– For virus? – For crown gall?

ADDITIONAL RESOURCES – WHOLESALE BUYERS

• Information on rules and

regulations

• Specifically designed for

wholesale buyers

• Burden of “proof” falls on the

retailer--- buy plants from the right place!

http://extension.wsu.edu/publications/pubs/fs286e/

michelle.moyer@wsu.edu; Office: 509-786-9234 www.wine.wsu.edu/extension www.facebook.com/wsu.vit.enol.ext @WSU_Vit_Ext

VITICULTURE EXTENSION

WASHINGTON STATE UNIVERSITY

World Class. Face to Face.

QUESTIONS?