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Use Phenolics Analysis to Help Sell Your Grapes

Elevate Your Vineyard's Appeal to Grape Buyers with In-Season Berry Phenolic Testing

CVC Ag is excited to offer weekly berry phenolic tracking. Our precision sampling and analysis services help you monitor key wine quality markers—essential for color, tannin structure, mouthfeel, and aging potential.

Why Phenolic Tracking Matters

  • Data-Driven Harvest Decisions – Go beyond Brix and acidity to pick at peak phenolic maturity.

  • Consistency & Quality Control – Achieve uniform phenolic expression year after year.

  • Maximize Grape Value – Deliver fruit with premium quality metrics that buyers demand.

CVC's Phenolic Analysis Services

  • Total Anthocyanins – Monitor seasonal color evolution to ensure optimal grape maturity and wine quality.

  • Catechins (Tannins) – Measure seed-derived tannins known for their impact on bitterness, astringency, and aging potential.

  • Total Polyphenols – Track polyphenol development, key contributors to wine flavors and complexity.

  • Custom Sampling Protocols – Tailored tracking to fit your vineyard’s unique conditions and winemaking goals.

Tailor Precision Phenolic Farming to Your Vineyard

Combining berry phenolic tracking with CVC’s real-time leaf and berry temperature monitoring will empower you to:

  • Manage grape phenolics with site-specific data.

  • Evaluate irrigation effectiveness during heat spikes.

  • Demonstrate the cost-effectiveness of alternative cooling methods (e.g., shade cloth, sunscreen, misters).


Take the Guesswork Out of Phenolics

Contact Us Today to implement a phenolic tracking program and elevate your fruit quality with precision data.

Coastal Viticultural Consultants Phenolics Analysis Grape Analysis Berry Phenolic Tracking

About

Experienced, Certified Professionals are our Strength!

The principals of COASTAL VITICULTURAL CONSULTANTS (CVC) have been professional VINEYARD consultants for over 25 years and have been CERTIFIED as Professional Soil Scientists and Agronomists for over 20 years. Our professional certifications, breadth of experience and a proven track record places CVC as a leader in the viticulture industry. CVC is proud of the long term relationships that we have developed with our clientele.

CVC’s strength is consistent quality of work and our experienced staff. CVC provides vineyard consulting throughout California and Oregon to growers and wineries that encompasses all aspects Vineyard Soil Testing, Vineyard Soil Mapping, Vineyard Nutrition, Vineyard Design and Vineyard Irrigation Management. We also consult with vineyards throughout the United States and internationally on a project basis. CVC staff consists of A.R.P.A.C.S. Certified Professional Agronomists and Soil Scientists with extensive consulting experience. All of CVC's management and field technical personnel have degrees in viticulture, agriculture and/or soils from major universities. For consistent, high quality work, use a Certified A.R.P.A.C.S. professional.

Contact

Contact List

Title Name Email Phone Extension
President Bryan Rahn brahn@coastalvit.com 707-965-3700
Soil Scientist Michael Princevalle mprincevalle@coastalvit.com 925-462-6206
Viticulturist Seth Schwebs sschwebs@coastalvit.com 707-479-7718
Viticulture Tech Tom Diaz tdiaz@coastalvit.com 707-337-9914

Location List

Locations Address State Country Zip Code
Coastal Viticultural Consultants, Inc. 1575 Deer Park Rd., Angwin CA United States of America 94508

List of Locations