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Education

• PhD: Rutgers University, Post Harvest Physiology
• MS: University of Arkansas, Horticultural Processing
• BS: University of Arkansas, Agriculture

Courses Taught

• FDSC 5603: Enology

Research Emphasis

Enology and Viticulture Research Program 

• Area of expertise is in viticulture and enology with emphasis on the influence of the pre-harvest complex on the final juice of wine quality. Also, emphasis is placed in the area of evaluating new processing variables on wine quality and style. Extensive efforts have been placed on developing new juice products from grape/fruit blends.

Publications

• Morris, J.R. 2008. Considerations for Starting a Winery. Arkansas Agric. Exp. Sta. Research Report #983.

• Main, G.L. and Morris, J.R. 2008. Impact of pruning methods on yield components and juice and wine composition of Cynthiana grapes. Amer. J Enol. Vitic. 59:179-187.

• Main, Gary L. and Justin R. Morris. 2008. Mechanical and minimal pruning of Cynthiana grapes: Effect on yield components and juice and wine composition. In Proceedings of the Justin R. Morris Vineyard Mechanization Symposium. R. K. Striegler, A. Allen, E. Bergmeier, J. Harris (Eds). Pp. 97-111. Osage Beach, MO. February 2-3, 2008.

• Meullenet, J-F., Lovely, C., Threlfall, R., Morris, J.R. and Striegler, R.K. 2008. An ideal point density plot method for determining an optimal sensory profile for Muscadine grape juice. Food Quality and Preference 19(2):210-219.

• Morris, Justin R., Gary L. Main, Renee T. Threlfall, and R. Keith Striegler. 2008. Initial impact of pruning and fruit thinning applications on growth and composition of Concord and Sunbelt grapes. In Proceedings of the Justin R. Morris Vineyard Mechanization Symposium. R. K. Striegler, A. Allen, E. Bergmeier, J. Harris (Eds). Pp. 112-129. Osage Beach, MO. February 2-3, 2008.

• Main, G.L. and Morris, J.R. 2007. Effect of macerating enzymes and postfermentation grapeseed tannin on color of Cynthiana wines. Am. J. Enol. Vitic. 58:365-372.

• Main, G.L., Morris, J.R. and Threlfall, R.T. 2007. Use of a thin-film vacuum evaporator to produce white and dessert-style wine. Wine East 2007 Buyers Guide pp. 18, 20-23, 25.

• Main, G.L., Threlfall, R.T. and Morris, J.R. 2007. Reduction of malic acid in wine using natural and genetically enhanced microorganisms. Am. J. Enol. Vitic. 58:341-345.

• Threlfall, R.T., Morris, J.R. and Meullenet, J-F. 2007. Product development and nutraceutical analysis to enhance the value of dried fruit.  J. Food Qual. 30:552-566.

• Threlfall, R.T., Morris, J.R., Meullenet, J-F. and Striegler, R.K.. 2007. Sensory characteristics, composition, and nutraceutical content of juice from Vitis rotundifolia (Muscadine) cultivars. Am. J. Enol. Vitic. 58(2):268-273.

• Main, G.L., R.T. Threlfall, and J.R. Morris. 2007. Reduction of Malic Acid in Wine Using Natural and Genetically Enhanced Microorganisms. Am. J. Enol. Vitic. 58(3):341-345.

• Main, G.L. and J.R. Morris. 2007. Effect of Macerating Enzymes and Postfermentation Grape-Seed Tannin on the Color of Cynthiana Wines. Am. J. Enol. Vitic. 58(3):365-372.

• Threlfall, R.T., J.R. Morris, J-F. Meullenet and R.K. Striegler. 2007. Sensory characteristics, composition, and nutraceutical content of juice from eight Vitis rotundifolia (Muscadine grapes) cultivars. Am. J. Enol. Vitic. 58(2):268-273.

• Threlfall, R.T., J.R. Morris, and J-F Meullenet. 2007. Product Development and Nutraceutical Analysis to Enhance the Value of Dried Fruit. J. of Food Quality 30:552-566.

• Morris, J.R. 2007. Development and Commercialization of a Complete Vineyard Mechanization System. HortTechnology 17(4):411-420.

• Morris, J.R. and P.L. Brady 2007. The Muscadine Experience: Adding Value to Enhance Profits (revised edition). Arkansas Agric. Exp. Sta. Research Report #982.

• Thomsen, M.R., and J.R. Morris. 2007. Economics of Mechanizing Pre-Harvest Vineyard Operations. In: Wine East 2007 Buyers’ Guide. Pp. 6-17.

• Morris, J.R., G.L. Main, and R.K. Striegler. 2007. Rootstock and training system affect ‘Sunbelt’ grape productivity and fruit composition. J. Am. Pom. Soc. 61(2):71-77.

• Threlfall, R.T., G.L. Main and J.R. Morris. 2006. Effect of freezing grape berries and heating must samples on extraction and analysis of components of red wine grape cultivars. Australian J. Grape and Wine Research 12(2):161-169.

• Morris, J.R. 2006. Development and incorporation of mechanization into intensely managed grape vineyards. Paper and Abstract Book, Wine Growing for the Future, 6th International Cool Climate Symposium for Viticulture and Enology. pp 68-83.

• Noguera, E., J. Morris, K. Striegler, and M. Thomsen. 2005. Production Budgets for Arkansas Wine and Juice Grapes. Arkansas Agric. Exp. Sta. Research Report # 976.

  Abbreviated Vita  (PDF)