Roy A. Larson Larson, R. A., & McCall, I. (2001). NCSU poinsettia cultivar trials - 2000. North Carolina Flower Growers' Bulletin, 46(2), 6. Larson, R. A., & McCall, I. F. (1999). A report on the NCSU 1998 poinsettia trials. North Carolina Flower Growers' Bulletin, 44(2), 8. Larson, R. A., & McCall, I. F. (1998). 1997 Poinsettia trials at NC State University. North Carolina Flower Growers' Bulletin, 43(1), 6. Larson, R. A., & McCall, I. F. (1997). The 1996 poinsettia cultivar trial: A different approach. North Carolina Flower Growers' Bulletin, 42(2), 1. Bell, M. L., Larson, R. A., & Bailey, D. A. (1997). Vegetative growth responses of florist azaleas to dikegulac, ga(4+7), and 6-benzylamino purine. HortScience, 32(4), 690–693. Larson, R. A., & McCall, I. F. (1996). Evaluation of poinsettia cultivars at N.C. State University in 1995. North Carolina Flower Growers' Bulletin, 41(1), 1. Larson, R. A., & McCall, I. F. (1995). Fifty poinsettia cultivars in 1994. We can't wait for '95. North Carolina Flower Growers' Bulletin, 40(1), 16. Larson, R. A., & Fine, I. Y. (1994). Evaluation of poinsettia cultivars in 1993 at NCSU. North Carolina Flower Growers' Bulletin, 39(1), 1. Larson, R. A. (1993). Impact of plastics in the floriculture industry. HortTechnology, 3(1), 28. Larson, R. A., & Fine, I. Y. (1993). Poinsettia cultivar evaluations at North Carolina State University in 1992. North Carolina Flower Growers' Bulletin, 38(1), 5. Larson, R. A., & Fine, I. Y. (1992). 1991 Poinsettia cultivar evaluations at North Carolina State University. North Carolina Flower Growers' Bulletin, 37(1), 1. Larson, R. A., & Fine, I. Y. (1992). Is there a lily to take the place of 'Ace' or 'Nellie White'? North Carolina Flower Growers' Bulletin, 37(3), 1. Larson, R. A., & Fine, I. Y. (1992). Those tempting late poinsettia cuttings: Are they worth saving? North Carolina Flower Growers' Bulletin, 37(1), 8. Larson, R. A., & Thorne, C. B. (1987). Bulb dips: There are better ways to control height. North Carolina Flower Growers' Bulletin, 31(6), 7. Larson, R. A., Thorne, C. B., Milks, R. R., Isenberg, Y. M., & Brisson, L. D. (1987). Use of ancymidol bulb dips to control stem elongation of Easter lilies grown in a pine bark medium. Journal of the American Society for Horticultural Science, 112(5), 773. Larson, R. A. (1986). Bonzi: A new growth regulator for floricultural crops. North Carolina Flower Growers' Bulletin, 30(2), 1. Larson, R. A. (1985). African violet chimeras: A practical use of micropropagation. North Carolina Flower Growers' Bulletin, 29(6), 9. Larson, R. A. (1985). Growth regulators in floriculture. Horticultural Reviews, 7, 399. Larson, R. A. (1983). Enhancement of azalea production with plant growth regulators. Scientific Horticulture, 34, 102. Larson, R. A. (1982). Poinsettia challenges in the United States in the 1980s. Scientific Horticulture, 33, 113. Larson, R. A. (1980). Azaleas. In Introduction to floriculture (p. 237). New York: Academic Press. Larson, R. A. (1980). Begonias. In Introduction to floriculture (p. 395). New York: Academic Press. Larson, R. A., & Hilliard, B. G. (1980). Is chemical pinching of azaleas worthwhile? North Carolina Flower Growers' Bulletin, 24(2), 1. Larson, R. A., & Hilliard, B. G. (1979). Reduction in production time for 10 cm azaleas with chemical pinching. North Carolina Flower Growers' Bulletin, 23(2), 4. LARSON, R. A. (1978). STIMULATION OF LATERAL BRANCHING OF AZALEAS WITH DIKEGULAC-SODIUM (ATRINAL). JOURNAL OF HORTICULTURAL SCIENCE, 53(1), 57–62. https://doi.org/10.1080/00221589.1978.11514794 Larson, R. A., & Bonaminio, V. P. (1973). Application of A-Rest to chrysanthemums growing in a bark medium. North Carolina Flower Growers' Bulletin, 17(5), 5. Larson, R. A., & Hilliard, B. G. (1973). Maximum return with mini-poinsettias. North Carolina Flower Growers' Bulletin, 17(3), 1. Larson, R. A., & Sydnor, T. D. (1971). Azalea flower bud development and dormancy as influenced by temperature and gibberellic acid. Journal of the American Society for Horticultural Science, 96(6), 786.