Selected Publications 

Book Chapters

Williamson, J. G., R. L. Darnell, G. Krewer and S. NeSmith. 1996. Gibberellic acid: A management tool for increasing yield of rabbiteye blueberry. In R. E. Gough and R. F. Korcak (Eds.). Blueberries: A century of Research. Haworth Press, Inc. New York. pp.. 203-218.

Williamson, J.G., G. Krewer, G. Pavlis, and M. Mainland. 2005. Blueberry soil management, nutrition and fertilization. In N.F. Childers (Ed). Blueberries: For Growers, Gardeners and Promoters . N.F. Childers Horticultural Publications, Gainesville , Fla. pp. 60-74.

Lyrene, P.M. and J.G. Williamson. 2005. Protecting blueberries from freezes in Florida . In N.F. Childers (Ed.). Blueberries: for Growers, Gardeners and Promoters. pp 21-25.

 

Selected Refereed Journal Articles - Last 10 Years

Williamson, J. G. 1997. Forcing method and time of rootstock shoot removal affect growth of containerized citrus nursery trees. HortTechnology 7(1):1-3.

Williamson, J. G. and W. B. Sherman. 1997. 'Sunred' nectarine. Fruit Var. Journal. 51(4):194-195.

NeSmith, S., G. Krewer, and J. G. Williamson. 1998. A developmental scale for assessing vegetative budbreak in rabbiteye blueberry. HortScience. 33(4):757.

Maust, B. E., J. G. Williamson, and R. L. Darnell. 1999.Flower bud density affects vegetative and fruit development in field-grown southern highbush blueberry. HortScience. 34(4):607-610.

Maust, B. E., J. G. Williamson, and R. L. Darnell. 1999. Effects of flower bud density on vegetative and reproductive development and carbohydrate relations in southern highbush blueberry. J. Amer. Soc. Hort. Sci. 124. 532-538.

Maust, B. E., J. G. Williamson, and R. L. Darnell. 2000. Carbohydrate reserve concentrations and flower bud density effects on vegetative and reproductive development in southern highbush blueberry. J. Amer. Soc. Hort. Sci. 125:413-419.

Williamson, J. G., B. E. Maust* and D.S. NeSmith. 2001. Timing and concentration of hydrogen cyanamide affect blueberry bud development and flower mortality. HortScience 36:922-924.

Williamson, J. G. and E. P. Miller. 2002. Early fall defoliation reduces flower bud number and yield of southern highbush blueberry. HortTechnology 12:214-216.

Williamson, J. G., G. Krewer, B. E. Maust and E. P. Miller. 2002. Dormex accelerates vegetative budbreak and shortens fruit development period of blueberry. HortScience. 37:539-542.

Spann, T.M.*, J.G. Williamson and R.L. Darnell. 2003. Photoperiodic Effects on Vegetative and Reproductive Growth of Vaccinium darrowi and V. corymbosum Interspecific Hybrids. HortScience. 38:192-195.

Spann, T. M.*, J.G. Williamson and R.L. Darnell. 2004. Photoperiod and temperature effects on growth and carbohydrate storage in southern highbush blueberry interspecific hybrid. J. Amer. Soc. Hort. Sci. 294-298:129

Krewer, G., D. S. Nesmith, J.G. Williamson, B. Maust, and B. Mullinix. 2005. Ethephon for bloom delay of rabbiteye and southern highbush blueberries. Small Fruits Review. 4: 43-57.

Darnell, R.L., B. Brunner, H.E. Alvarado and J.G. Williamson. 2006. Off-Season Raspberry Production in Warm Season Climates. HortTechnology. 16:92-97.

Williamson, J.G. and D.S. NeSmith. 2007. Evaluation of flower bud removal treatments on growth of young blueberry plants. HortScience 42(3):571-573.

Williamson, J.G. and D.S. NeSmith. 2007. Effects of CPPU applications on southern highbush blueberries. HortScience 42: 1612 -1615.

Alvarado-Raya, H*., R.L. Darnell and J.G. Williamson. 2007. Root to shoot relations in an annual raspberry ( Rubus idaeus L.) production system. HortScience 42: 1559 - 1562.

Wert, T.W.*, J.G. Williamson, J.X. Chaparro, E.P. Miller and R.E. Rouse. 2007. Node type development of four low-chill peach cultivars at three locations in Florida . HortScience 42: 1592 - 1595.

Wert, T.W.*, J.G. Williamson, J.X. Chaparro, E.P. Miller and R.E. Rouse. 2007. Influence of climate on fruit shape of four low-chill peach cultivars. HortScience 42: 1589 - 1591.

Wilber, W.L.* and J.G. Williamson. 2007. Effects of fertilizer rate on growth and fruiting of southern highbush blueberry. HortScience. (in press).

* = Graduate Student

Selected Non-refereed Journal Articles

Williamson, J. G. and P. M. Lyrene. 1996. State of the Florida blueberry industry. Proc. Fla. State Hort. Soc. Vol. 108:378-381.

Andersen, P.C., T. E. Crocker, and J. G. Williamson. 1996. Status of fruit crops in north Florida: a retrospective and current analysis. Proc. Fla. State Hort. Soc. Vol. 108:340-345.

Williamson, J. G. 1996. An overview of Florida's blueberry industry. Proc. 17^th Annual Meeting of the Alabama Fruit and Vegetable Growers' Association. J. M. Kemble and A. A. Powell (Eds.). 17:52-54.

Williamson, J. G. 1996. New peach and nectarine cultivars from Florida. Proceedings of the 17^th Annual Meeting of the Alabama Fruit and Vegetable Growers' Association. J. M. Kemble and A. A. Powell (Eds.) 17:49-51.

Williamson, J. G. and R. L. Darnell. 1996. Post-harvest mechanical pruning affects vegetative and reproductive growth of rabbiteye and southern highbush blueberry. Proc. of the 8^th Biennial Southeast Blueberry Conference. G. Krewer and D. McGregor (Eds.). 8:68-73.

Williamson, J. G. and R. L. Darnell. 1997. Gibberellic acid sprays increase fruit set and yield of rabbiteye blueberries. Proc. Fla. State Hort. Soc. 109:212-214.

Crocker, T.E., J. G. Williamson and J. L. Jackson. 1997. Demonstration plots for alternative fruit and nut crops for central Florida. Proc. Fla. State Hort. Soc. 109:209-211.

Lyrene, P.M. and J. G. Williamson. 1997. High-density blueberry plantings in Florida. Acta Horticulturae. No. 446:251-256.

Darnell, R. L. and J. G. Williamson. 1997. Feasibility of blueberry production in warm climates. Acta Horticulturae. No. 446:265-269.

Lyrene, P.M. and J. G. Williamson. 1998. Highbush blueberry varieties for Florida. Proc. Fla. State Hort. Soc. 110:171-174.

Obreza, T. A., J. G. Williamson, R. L. Darnell and P.M. Lyrene. 1998. Performance of a young southwest Florida non-dormant blueberry planting. Proc. Fla. State Hort Soc. 110: 175 - 177.

Wiliamson, J. G. and S.A. Sargent. 1999. Postharvest characteristics and consumer acceptance of non-melting flesh peach. Proc. Fla. State Hort Soc. 112:241-242.

Williamson, J.G. and P.M. Lyrene. 2001. A survey of blueberry acreage in Florida. Proc. Fla. State Hort. Soc.113:24-25.

Obreza, T.A., J. G. Williamson and P.M. Lyrene. 2001. Blueberry cultivar evaluation in southwest Florida. Proc. Fla. State. Hort. Soc.113:26-28.

Lyrene, P.M. and J. G. Williamson. 2001. Freeze protecting Florida blueberries. Proc. Fla. State Hort. Soc. 113:28-32.

Williamson, J. G., B. E. Maust, and S.D. NeSmith. 2002.  Timing and concentration of hydrogen cyanamide sprays affect bud development, flower mortality and hasten maturity of blueberry.  Proc. Fla. State Hort. Soc.  114:27-30.

Andersen, P.C., W.B. Sherman and J.G. Williamson. 2001. Low chill peach and nectarine cultivars from the University of Florida breeding program: 50 years of progress. Proc. Fla. State Hort. Soc. 114:27-30.

Williamson, J.G., B.E. Maust, E.P. Miller and G. Krewer. 2002. Hydrogen cyanamide accelerates vegetative budbreak and shortens fruit development period of blueberry. Proc. Fla. State Hort. Soc. 115:

Williamson, J. G., Maust, B. E., NeSmith, D. S. 2002. Timing and concentration of hydrogen cyanamide sprays affect bud development, flower mortality and hasten maturity of blueberry. Proc. Fla. State Hort. Soc. 114: 27-30.

Lyrene, P. M. and J.G. Williamson. 2004. Blueberry fruit set as related to relative humidity in north-central Florida in spring 2003. Proc. Fla. State Hort. Soc.116:21-24.

Williamson, J. G., P.M. Lyrene, and E.P. Miller. 2004. Early and mid-fall defoliation reduces flower bud number and yield of southern highbush blueberry. Proc. Florida State Hort. Soc.116: 25-27.

Darnell, R. L., J.G. Williamson, and H. Alvarado. 2004. Off-season raspberry production in a subtropical climate. Acta Hort. 659:67-71.

Williamson, J.G. and P.M. Lyrene. 2005. The Florida blueberry industry: A decade of growth. Proc. Fla. State Hort. Soc. 117:

Wert, T., E.P. Miller, J.G. Williamson and R.E. Rouse. 2006. Preliminary observations for controlling bacterial spot in low chill peaches. Proc. Fla. State Hort. Soc. 119:32-33.