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Tony Wolf

Tony Wolf
Alson H. Smith, Jr. AREC
595 Laurel Grove Rd.
Winchester, VA 22602


Extension and research split, with administrative and teaching activities. Research has included training system and canopy management practices appropriate for the Mid-Atlantic wine grape production, vineyard floor and nutrient management practices, identification of insect vector of North American Grapevine Yellows, refined cluster exposure to enhance grape and wine aromas, and means of optimizing grapevine tissue cold hardiness. Extension program comprises workshops, technical contribution to industry meetings, development of web-based decision support tools, and publication of technical print and online media. I teach an on-line viticulture course in even fall semesters.


  • Viticulture


  • B.S., horticulture, West Virginia University, 1979
  • M.S., horticulture, Pennsylvania State University, 1982
  • Ph.D., Pomology and Viticulture, 1986

Current (2020) research interests center on exploration of novel wine grape cultivars and selections for adaptation and improved resiliency to Mid-Atlantic climate, application of synthetic abscisic acid (ABA) analogs to grapevines to delay spring bud burst, efficacy of a synthetic, enzymatic fungicide for disease management in grape, improved understanding and management of a fungal disease of grape berries caused by Neofusicoccum ribis, and evaluation of partial canopy rainshields for reduced disease of wine grapes.

  • HORT 4654: Viticulture (even fall semesters)

Director | 2004 - present
Alson H. Smith, Jr. Agricultural Research and Extension Center
Virginia Polytechnic Institute and State University

Professor Horticulture | 1999 to present
Alson H. Smith, Jr. AREC and School of Plant and Environmental Science 
Virginia Polytechnic Institute and State University

Associate Professor, Horticulture | 1992-1999
Virginia Polytechnic Institute and State University

Assistant Professor, Horticulture | 1986-1992
Virginia Polytechnic Institute and State University

  • “Contribution to Virginia Viticulture”, Virginia Vineyards Association, 2008
  • Virginia Tech Alumni Extension Excellence Award, 2009
  • Virginia Tech’s College of Agriculture and Life Science’s Land-grant Award, 2011
  • Virginia Agribusiness Council’s “Land Grant University”, 2016
  • Outstanding Achievement Award, Eastern Section/American Society for Enology and Viticulture, 2017

 (Peer Reviewed, leading numbers are cumulative total RJPs)

51. Hickey, C.C. and T.K. Wolf. 2019. Intensive fruit zone leaf thinning increases Vitis vinifera L. 'Cabernet Sauvignon' berry temperature and berry phenolics without adversely affecting berry anthocyanins in Virginia. HortScience 54(7):1181-1189.

50. Lenzi, P., T.M. Stoepler, D.J. McHenry, R.E. Davis and T.K. Wolf. 2019. Jikradia olitoria ([Hemiptera]:[Cicadellidae]) Transmits the Sequevar NAGYIIIβ Phytoplasma Strain Associated with North American Grapevine Yellows in Artificial Feeding Assays. J. Insect Sci., 19(1):1-10. 

49. Hatch, T.A., M. Nita and T.K. Wolf. 2019. Vegetative and reproductive responses of mature Cabernet Sauvignon grapevines converted from spur pruning to cane pruning at five-foot in-row vine spacing. Catalyst 3: (in press).

48. Hickey C.C. and T.K. Wolf. 2018. Cabernet Sauvignon responses to prebloom and post-fruit set leaf removal in Virginia. Catalyst 2:24-34.

47. Davis, R.E., E.L. Dally, Y. Zhao, and T.K. Wolf. 2018. Genotyping Points to Divergent Evolution of ‘Candidatus Phytoplasma asteris’ Strains Causing North American Grapevine Yellows and Strains Causing Aster Yellows. Plant Disease 102:1696-1702.

46. Hickey, C.C., M.T. Kwasniewski and T.K. Wolf. 2018. Leaf removal effects on Cabernet franc and Petit Verdot. II. Grape carotenoids, phenolics, and wine sensory analysis. Amer. J. Enol. Vitic. 69:231-246.

45. Hickey, C.C. and T.K. Wolf. 2018. Leaf removal effects on Cabernet franc and Petit Verdot. I. Crop yield components and primary fruit composition. Amer. J. Enol. Vitic. 69:221-230.

44. Giese, Gill, T.K. Wolf, C. Velasco-Cruz, and L. Roberts. 2016. Cover crop and root pruning effects on the rooting pattern of SO4 rootstock grafted to Cabernet Sauvignon. Amer. J. Enol. Vitic. 67:105-115.

43. Gustavo, F.C., Hatch, T.A. and Wolf, A.K. 2016. Assessment of the impact of viticulture extension programs in Virginia. Journal of Extension, 54(5). 11 pages.

42. Klodd, A., D. Eissenstat, T.K. Wolf, and M. Centinari. 2016. Coping with cover crop competition in mature grapevines. Plant and Soil 400:391-402.

41. Hickey, C., T. Hatch, J. Stallings, and T.K. Wolf. 2016. Under-trellis cover crop and rootstock affect growth, yield components, and fruit composition of Cabernet Sauvignon. Amer. J. Enol. Vitic. 67:281-295.

40. Davis, RE, EL Dally, Y Zhao, I-M Lee, W Wei, TK Wolf, L Beanland, DG LeDoux, DA Johnson, JA Fiola, H Walter-Peterson, I Dami and M Chien. 2015. Unraveling the etiology of North American Grapevine Yellows (NAGY): Novel NAGY phytoplasma sequevars related to ‘Candidatus Phytoplasma pruni’. Plant Dis. 99:1-11.

39. Giese, Gill, T.K. Wolf, C. Velasco-Cruz, L. Roberts, and J. Heitman. 2015. Cover crop and root pruning impacts on vegetative growth, crop yield components, and grape composition of Cabernet Sauvignon. Amer. J. Enol. Vitic. 66:212-226.

38.  Giese, Gill, C. Velasco-Cruz, L. Roberts, J. Heitman, and T.K. Wolf. 2014. Complete vineyard floor cover crops favorably limit grapevine vegetative growth. Scientia Horticulturae 170:256-266.

Recent books and other peer-reviewed publications

Stoepler, T.M. and T.K. Wolf. 2013. North American Grapevine Yellows Disease: Current knowledge and management recommendations for wine growers. VCE Publication AREC-48P, VPI and SU, Blacksburg, VA.

Wolf, T.K. (editor). 2008. Wine Grape Production Guide for Eastern North America. NRAES -145. Natural Resource, Agriculture, and Engineering Service (NRAES), Ithaca, NY. 336 p.