•Viticulture skills include: Grapevine pruning; Grapevine training & canopy management; and crop estimation methods; and production yield data analysis.•Development of vineyard farm plans for winery product requirements by variety, climate, and region•Vineyard site evaluation for climate, soils, slope, and aspect.•Vineyard development and vineyard economic analysis for both Winery and Grower requirements.•Data calculation for strategic winery supply and demand planning.•Long term grape pricing evaluations by variety for the All Regions of California and Oreon•Negotiation of grape purchase agreements with Growers for multiple year and annual purchase contracts.•Monitor the annual pesticide use and reporting policy for winery compliance with international pesticide residue standards for wine.•Perform vineyard assessments for pest and disease status.•Development and implementation of sound integrated pest management practices and strategies.•Irrigation scheduling and seasonal water management strategies.•Assist Growers with evaluation of grapevine plant mineral nutrition status by soil, water, and plant tissue analysis methods.•Objectively assess and evaluate vineyards by field and grape quality grading for winery brand specifications and harvest planning.•Soil and site evaluation for best management practices and erosion control methods.•Wine assessment and objective grading by sensory evaluation to improve or maintain wine quality.