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Stephen J. Vasquez M.S.

Viticulture Farm Advisor
Cooperative Extension Fresno County
1720 South Maple Avenue
559-600-7285
Fresno, CA 93702
(559) 600-7212
sjvasquez@ucanr.edu Create VCard

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Biography

Stephen Vasquez is currently employed by the University of California as a Cooperative Extension viticulture farm advisor. He has served Fresno County since 1999 and took over responsibility for Madera County in 2006. He is responsible for helping grape growers solve production issues related to table, raisin and wine grapes. Although being trained as a plant pathologist, his research program covers all areas of production including pest and disease management, grapevine nutrition, variety and rootstock evaluations as well as post harvest issues. He attended UC Davis and graduated with a BS in biology and an MS in plant pathology where he worked on grapevine disease issues. He is an active member of three scientific societies where he presents his research and has board responsibilities: American Phytopathological Society (APS); American Society of Viticulture and Enology (ASEV); and Pesticide Applicators Professional Association (PAPA). His PAPA board responsibilities have allowed him to represent pesticide applicators and farmers and work closely with the California Department of Food and Agriculture and the Department of Pesticide Regulation in developing scientifically based approaches to managing invasive pests in CA agriculture. When he’s not walking vineyard rows or speaking at meetings he spends time with his wife landscaping his yard and walking his three dogs.

Education

M.S. Plant Pathology, University of California-Davis. 1999

Specialty

Viticulture and Grape Pathology

Areas of Expertise (click to see all ANR academics with this expertise)

Bibliography

Peer Reviewed

  • Bettiga, L. (In Press). Calendars of Events for Viticulture Management -- Southern San Joaquin Valley. , UC ANR Pub. 3343.
  • Bettiga, L. (In Press). Crown Gall. , UC ANR Pub. 3343.
  • Bettiga, L. (In Press). Esca/Petri Disease. , UC ANR Pub. 3343.
  • Bettiga, L. (In Press). Laboratory Testing for Grape Diseases. , UC ANR Pub. 3343.
  • Bettiga, L. (In Press). Phomopsis Cane and Leaf Spot. , UC ANR Pub. 3343.
  • Bettiga, L. (In Press). Raisin Molds and Rots. , UC ANR Pub. 3343.
  • Bettiga, L. (In Press). Raisin Moth. , UC ANR Publication 3343.
  • Bettiga, L. (In Press). Stored Raisin Product Pests. , UC ANR Pub. 3343.
  • Bettiga, L. (In Press). Western Grapeleaf Skeletonizer. , UC ANR Pub. 3343.
  • Vasquez, S. J.; Palumbo, J. D., et al. (2011). "Isolation and Identification of Ochratoxin A-Producing." 52: 330-336.
  • Vasquez, S. J.; Hembree, K. J., et al. (2010). Effects of weed growth on establishment of a table grape vineyard.
  • Vasquez, S. J. (2010). Nitrogen survey of California's vineyards and management strategies for new cultivars.
  • Vasquez, S. J.; Epstein, L., et al. (2010). Nitrogen survey of California's vineyards and management strategies for new cultivars.
  • Vasquez, S. J.; Bentley, W., et al. (2007). Biologically integrated farming systems for California table grape production.
  • Vasquez, S. J.; Fidelibus, M. W., et al. (2007). "Canopy separation and defoliation do not improve the dry-on-vine (D.O.V.) raisin-making method for 'Thompson Seedless' grapevines on traditional trellises." 61(2): 61-70.
  • Vasquez, S. J.; Gubler, W. D., et al. (2006). Economic loss in California's table grape vineyards due to measles.
  • Vasquez, S. J. (2005). "APS-101 Encourages Society Involvement." 39(11): 169.
  • Vasquez, S. J.; Fidelibus, M., et al. (2005). Drying Method and Grapevine Cultivar Effects on Raisin Quality.
  • Vasquez, S. J.; Michailides, T. J., et al. (2005). Infection of Grape Nursery Stock by.
  • Vasquez, S. J.; Leavitt, G. M., et al. (2005). The use of a Risk Assessment Index to reduce fungicide applications and control of powdery mildew in California vineyards.
  • Vasquez, S. J.; Leavitt, G. M. (2004). "California's San Joaquin Valley Grape Growers Reduce Fungicide Applications." 94: S106, Publication no. P-2004-0720-AMA.
  • Vasquez, S. J.; Fidelibus, M., et al. (2004). "Canopy Separation and Defoliation for Dry-on-the-Vine (D.O.V.) Raisins on Traditional Trellises." 39(4): 880.
  • Vasquez, S. J.; Dokoozlian, N. K. (2002). "In-row Spacing and Training System Interact on the Growth and Productivity of Syrah Grapevines in the San Joaquin Valley." 53: 248A.
  • Vasquez, S. J.; Peacock, W. L., et al. (2001). Pierce's Disease: Identification in Southern San Joaquin Valley Vineyards. UC ANR Publication IPM7-01. 2001.
  • Vasquez, S. J.; Peacock, W. L., et al. (2001). Pierce's Disease: Management in Southern San Joaquin Valley Vineyards. UC ANR Publication IPM9-01. 2001.
  • Vasquez, S. J.; Gubler, W. D. (2000). Black Measles in California.

Non-Peer Reviewed

  • R. Angelini (2010). Mondo et mercato: Stati Uniti. Milano, Italy, Bayer CorpScience S.r.l.: 506-518.
  • Vasquez, S. J. (2010). Powdery Mildew Challenges.
  • Vasquez, S. J.; Rinder, F. (2009). Vertebrate Pest -- Laws and Regulations.
  • Vasquez, S. J.; Bentley, W., et al. (2009). Vine mealybug: Researching new management strategy and results of recent field trials.
  • Vasquez, S. J.; Hashim-Buckey, J., et al. (2008, 2008). "Sample Costs to Produce Organic Raisins -- Continuous Tray, San Joaquin Valley." from http://coststudies.ucdavis.edu/files/graperaisinorgvs08.pdf.
  • Vasquez, S. J.; Bentley, W. J., et al. (2007). Biologically Integrated Farming Systems for California Table Grape Production. 124-125. 2007.
  • Vasquez, S. J. (2007). Nutritional Characteristics of New Raisin Cultivars.
  • Vasquez, S. J.; Mueller, S. (2007). "Refractometer Calibration, Use and Maintenance." 23(7): 1, 30-32.
  • Vasquez, S. J.; Peacock, W. L., et al. (2007, 2007). "Sample Cost to Establish and Produce Table Grapes: Crimson Seedless -- San Joaquin Valley-South." from http://coststudies.ucdavis.edu/files/grapecrimsonvs2007.pdf.
  • Vasquez, S. J.; Peacock, W. L., et al. (2007, 2007). "Sample Cost to Establish and Produce Table Grapes: Flame Seedless -- San Joaquin Valley-South." from http://coststudies.ucdavis.edu/files/grapeflame_vs2007.pdf.
  • Vasquez, S. J.; Hashim-Buckey, J. M., et al. (2007, 2007). "Sample Cost to Establish and Produce Table Grapes: Redglobe -- San Joaquin Valley-South." from http://coststudies.ucdavis.edu/files/graperedglobe_vs2007.pdf.
  • Vasquez, S. J.; Hashim-Buckey, J. M., et al. (2007, 2007). "Sample Cost to Establish and Produce Table Grapes: Thompson Seedless -- San Joaquin Valley-South." from http://coststudies.ucdavis.edu/files/grapets_vs2007.pdf.
  • Vasquez, S. J. (2006). Benefits of Rootstocks for DOV Production.
  • Vasquez, S. J.; Fidelibus, M. (2006). "Considerations for monitoring grapevine nutritional status." 22(5): 9-11.
  • Vasquez, S. J.; Fidelibus, M., et al. (2006). Drying Method and Grapevine Cultivar Effects on Raisin Quality.
  • Vasquez, S. J.; Gubler, W. D., et al. (2006). Economic loss in California's table grape vineyards due to measles.
  • Vasquez, S. J.; Fidelibus, M. (2006). "Growers needed to develop UC cost study on continuous tray raisin production." 22(8): 12-13.
  • Vasquez, S. J.; Rinder, F. (2006). Managing Bird Pests in Vineyards.
  • Vasquez, S. J.; Peacock, W. L., et al. (2006, 2006). "Sample Cost to Establish and Produce Grapes for Raisins -- Tray Dried, San Joaquin Valley." from http://coststudies.ucdavis.edu/files/grraistdsj06.pdf.
  • Vasquez, S. J.; Fidelibus, M. W., et al. (2006, 2006). "Sample Costs to Produce Raisins -- Continuous Tray-Harvest Equipment Purchased New, San Joaquin Valley." from http://coststudies.ucdavis.edu/files/grraisctneweqsjv06.pdf.
  • Vasquez, S. J.; Fidelibus, M., et al. (2006, 2006). "Sample Costs to Produce Raisins -- Continuous Tray-Harvest Equipment Purchased Used and Refurbished, San Joaquin Valley." from http://coststudies.ucdavis.edu/files/grraisctoldeqsjv06.pdf.
  • Vasquez, S. J.; Fidelibus, M. (2006). "Sugar levels of fresh grapes predict the quality of dry-on-vine (DOV) raisins." 22(7): 18-20.
  • Vasquez, S. J.; Fidelibus, M. (2006). "Using grapevine bud dissection to assess yields." 22(12): 18, 20-21.
  • Vasquez, S. J.; Fidelibus, M. (2005). Canopy Management in Traditional Raisin Vineyards.
  • Vasquez, S. J. (2005). Determining Vineyard Nutritional Status. May.
  • Vasquez, S. J.; Wolpert, J., et al. (2005). Evaluation of New Winegrape Varieties for the San Joaquin Valley.
  • Vasquez, S. J. (2005). Managing Powdery Mildew.
  • Vasquez, S. J.; Rinder, F. (2005). Managing Vertebrate Pests in Vineyards.
  • Vasquez, S. J.; Peacock, W. L., et al. (2005, 2005). "Sample Cost to Establish and Produce Wine Grapes in the San Joaquin Valley." from http://www.agecon.ucdavis.edu/uploads/cost_return_articles/grapewinesjv2005.pdf.
  • Vasquez, S. J.; Hashim, J. M. (2005). Three New Fresh Market Grapes. 2005.
  • Vasquez, S. J.; Fidelibus, M., et al. (2004). Performance of Several DOV Raisin Production Systems in 2003.
  • Vasquez, S. J.; Peacock, W. L., et al. (2004, 2004). "Sample Cost to Establish and Produce Table Grapes: Crimson Seedless." from http://www.agecon.ucdavis.edu/uploads/cost_return_articles/grapetblcssj04.pdf.
  • Vasquez, S. J.; Leavitt, G. M., et al. (2004, 2004). "Sample Cost to Establish and Produce Table Grapes: Flame Seedless." from http://www.agecon.ucdavis.edu/uploads/cost_return_articles/grapetblfssj2004.pdf.
  • Vasquez, S. J.; Hashim, J. M., et al. (2004, 2004). "Sample Cost to Establish and Produce Table Grapes: Redglobe." from http://www.agecon.ucdavis.edu/uploads/cost_return_articles/grapetblrgsj04.pdf.
  • Vasquez, S. J.; Hashim, J. M., et al. (2004, 2004). "Sample Cost to Establish and Produce Table Grapes: Thompson Seedless." from http://coststudies.ucdavis.edu/files/grapetbltssj2004.pdf.
  • Vasquez, S. J.; Peacock, W. L., et al. (2004, 2004). "Sample Costs to Produce Grapes for Concentrate -- Spur Pruned Cultivars, San Joaquin Valley--South." from http://coststudies.ucdavis.edu/files/grapespconcvs04.pdf.
  • Vasquez, S. J.; Leavitt, G. M. (2003). California Grape Growers Reduce Fungicide Applications.
  • Vasquez, S. J.; Valencia, J., et al. (2003, 2003). "Diagnostic Lab Helps Fresno County Growers Solve Pest and Disease Problems." from http://ucanr.org/delivers/impactview.cfm?impactnum=435&mainunitnum=742.
  • Department of Agricultural and Resource Economics (2003, 2003). "Sample Cost to Establish a Vineyard and Produce Dried-on-the-Vine Raisins Using an Open Gable Trellis System." from http://www.agecon.ucdavis.edu/outreach/crop/coststudies/GrapeRaisOGSJ03.pdf.
  • Vasquez, S. J.; Leavitt, G. M. (2003, 2003). "San Joaquin Valley Grape Growers Reduce Fungicide Sprays." from http://ucanr.org/delivers/impactview.cfm?impactnum=434&mainunitnum=742.
  • Vasquez, S. J.; Katayama, D. G. (2003). "UC Research Viticulture in the San Joaquin Valley." 36(3): 18-20.
  • Vasquez, S. J. (2002). "Controlling Powdery Mildew." 24(10): 6-7.
  • Vasquez, S. J. (2002). Delayed Spring Growth in Grapevines.
  • Vasquez, S. J.; Coviello, R. (2002). "New and Reemerging Grape Pest." 26(6): 8-10.
  • Vasquez, S. J.; Peacock, B., et al. (2002). Update on DOV Production Using a Traditional Trellis.
  • Vasquez, S. J.; Peacock, B., et al. (2001). Producing DOV Raisins Using the Traditional Raisin Trellis.
  • Vasquez, S. J.; Dokoozlian, N. K., et al. (2001). "Raising Melissa." 121(1): 18J, 18L.
  • Vasquez, S. J. (2001). "Viruses in the Vineyard." 33(4): 12-15.
  • Vasquez, S. J.; Dokoozlian, N. K., et al. (2000). Cultural Practices for Autumn Royal Table Grapes. May - June. May - June.
  • Vasquez, S. J.; Dokoozlian, N. K., et al. (2000). Cultural Practices for Crimson Seedless Table Grapes. May - June.
  • Vasquez, S. J.; Dokoozlian, N. K., et al. (2000). Cultural Practices for Melissa Table Grapes. May - June.
  • Vasquez, S. J. (2000). "Grapevine Disease Management." 22(10): 18-31.
  • Vasquez, S. J. (2000). Sulfur Use and Good Application Practices. April.
  • Vasquez, S. J. (1999). Black Measles/Black Goo: Which Do You Have?
  • Vasquez, S. J.; Weber, E., et al. ((2003)). Vine Mealybug in California. 35:1, 6-7. (2003).
  • Vasquez, S. J. ((2000)). Black Measles in California. 32:3, 10-15. (2000).
  • Vasquez, S. J. ((2000)). Using and Applying Sulfur Properly. 32:6, 26-27. (2000).
  • Vasquez, S. J.; Fidelibus, M. W. "Facebook -- Viticulture." from http://www.facebook.com/viticulture.
  • Vasquez, S. J.; Fidelibus, M. W. "San Joaquin Valley Viticulture Blog." from http://ucanr.org/sjv-viticulture.
  • Vasquez, S. J. "Twitter -- Viticulture." from http://twitter.com/sjvgrapes.
  • Vasquez, S. J. "Vine Lines Newsletter -- Fresno County." from http://ucanr.org/sites/viticulture-fresno/Vine_Lines_Newsletter/.
  • Vasquez, S. J. "Viticulture -- Fresno County." from http://ucanr.org/sites/viticulture-fresno/.

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