Viticulture Extension Specialist Associate Professor Whats the - - PowerPoint PPT Presentation

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Viticulture Extension Specialist Associate Professor Whats the - - PowerPoint PPT Presentation

Nov 15, 2023 27 likes •138 views

Regionalizing Grape Quarantine & Certification Programs in the Pacific Northwest May 3, 2018 McMinnville, OR Viticulture Extension Specialist Associate Professor Whats the difference? Yield (harvest) CLEAN PLANTS CERTIFIED PLANTS

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Regionalizing Grape Quarantine & Certification Programs in the Pacific Northwest May 3, 2018 McMinnville, OR

Viticulture Extension Specialist Associate Professor

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What’s the difference?

CLEAN PLANTS

  • A relative term
  • Considered clean to the

best of our knowledge

  • Tests indicate no disease

CERTIFIED PLANTS

  • Produced by an official

certification program

  • Plants free of known

diseases

  • Testing
  • Visual evaluation

OREGON STATE UNIVERSITY 2

Yield (harvest)

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What to pursue in planting programs?

CONSIDERATIONS

  • Clean vines might not be available as “certified”
  • Certified plants may have disease

HOW “CLEAN” DESIGNATION OBTAINED

  • Clean-up process – Foundation Services
  • Vines never infected (?)

OREGON STATE UNIVERSITY 3

Yield (harvest)

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Key to CLEAN = Testing & Monitoring

CERTIFICATION PROGRAMS

  • Vines are subject to clean-up then testing cycles
  • Regimented program with knowns identified
  • Unknowns create issues
  • Red Blotch Disease
  • Pinot Gris Virus
  • Understand certification is not

a guarantee

OREGON STATE UNIVERSITY 4

Yield (harvest)

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Testing Outside of Certification Programs

Anyone can conduct testing via

  • Commercial analytical labs
  • University plant clinics

Testing source wood, new plants

  • Choice of testing:
  • What diseases are important for your production?
  • Trunk disease, virus, etc?
  • Staying clean requires repeat testing
  • Considerable expense

OREGON STATE UNIVERSITY 5

Yield (harvest)

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OREGON STATE UNIVERSITY 6

Grafting-over

  • Is the vineyard clean?
  • Is the source wood clean?
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  • Lack of plant availability
  • Cultivar/rootstock
  • Unique cultivars
  • New breeding program releases
  • Quantity to meet demand
  • Increased plant materials cost

OREGON STATE UNIVERSITY 7

Certification Decree: unintended consequences

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Finding Information & Plant Materials

New (to you) varieties, clones, rootstocks

OREGON STATE UNIVERSITY 8

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OREGON STATE UNIVERSITY 9

FPS Grape Registry (formerly National Grape Registry)

http://fps.ucdavis.edu/fgrvarieties.cfm Search Nurseries Certification, Availability, In progress

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OREGON STATE UNIVERSITY 10

Origin, importation, clonal synonyms, clean up

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OREGON STATE UNIVERSITY 11

Questions?

Patty Skinkis Viticulture Extension Specialist & Associate Professor OSU Dept Horticulture Oregon Wine Research Institute patricia.skinkis@oregonstate.edu 541-737-1411