US National Arboretum

 


Floral and Nursery Plants Research Unit

Dr. Donna Fare

Research Horticulturist
{McMinnville, TN}

e-mail: Donna.Fare@ars.usda.gov

April Remembered Camellia Yellow Bird Magnolia

PROJECT PLAN TITLES:  
Genetics, Breeding, and Improved Production Efficiency of Nursery Crops

INTRODUCTION:  
Conducts a research program in nursery crop production with emphasis on: identifying plant physiological constraints with nursery crops, developing improved production methods with field and container systems, and evaluate germplasm of ornamental trees and shrubs for landscape value.

PROGRESS:  
The ornamental industry is so diverse and dynamic that cultural information must constantly be modified and updated. Currently over 400 woody ornamental genera that include over 14,000 cultivated selections are grown in the U. S.  Limited information is available on production systems for many popular species and on cultural requirements needed to meet environmental regulations regarding water, pesticide and nutrient use.  New methods that are developed must be practical to be adopted by nursery producers, and where possible, be compatible with existing industry practices. Since ornamental crop production cannot be standardized nationwide, each production system must be refined for each specific provenance, soil type, and climatic region.  Current research projects include identifying environmental impacts on transplant stress and plant mortality with bare root nursery stock; investigating the root systems of harvested ornamental trees to determine root carbohydrate storage ability; evaluating the use of water, fertilizers, and container substrate in ornamental tree production; developing propagation methods for selected tree and shrub species; and evaluating ornamental merit, disease and insect resistance, and stress tolerance of landscape plants.

PLANS:   
Investigate factors that affect ornamental nursery stock production and sustainability in three main areas.  One area is to study the environmental stresses, survivability, and hardiness of selected bare root transplants.  Second, is to develop strategies to improve the efficiency of water use, fertilizers, and pesticides in conjunction with minimizing environmental concerns related to water runoff from nursery production areas.  And third, is to evaluate new landscape plants for ornamental merit, disease and insect resistance, and stress tolerance that will aid in appropriate plant selection, and development of improved propagation techniques to increase availability of superior clonal selections to growers and consumers.

RECENT PUBLICATIONS:

2005. Fare, D.C., P. Knight, C.H. Gilliam, and J.E. Altland.  Weed control for pot-in-pot production using preemergence herbicides.  J. of Environ. Hort. 23(4):204-211.

2005. Fare, D.C., G.J. Keever, and M. Halcomb.  NAA Reduces Vegetative Shoot Growth on Rootstocks of Ornamental Peach.  J. of Environ. Hort.  23:163-166.

2005. Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.  Spore germination, infection structure formation and colony development of Erysiphe pulchra on dogwood leaves and glass slides.  Plant Disease 89(12):1301-1304.

2005.  Fare, D.C. Fertilizer source affects nitrogen and phosphorus levels in leachate from container grown Quercus phellos L. and Magnolia virginiana L. HortScience 40(4):1048-1049.

2005.  Fare, D.C.  Nitrogen and phosphorus levels in leachate from container-grown willow oak and sweetbay magnolia.  Proc. of SNA Res. Conf. 50:39-43.

2005.  Fare, D.C.  Redbud germination affected by seed treatment.  Proc. of SNA Res. Conf. 50:401-403.

2005.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.  Development of powdery mildew on resistant and susceptible dogwood cultivars.  Proc. of SNA Res. Conf. 50:247-250.

2005.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.  Resistance of daylily cultivars to rust.  Proc. of SNA Res. Conf. 50:247-250.

2005.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.   Spore germination, infection structure formation and colony development of Erysiphe pulchra on dogwood leaves and glass slides. Plant Disease 89(12):1301-1304.

2006.  Fare, D.C.  Container size and initial trunk diameter effects growth of Acer rubrum L. during production.  J. Environ. Hort. 24:18-22.

2006.  Yeager, Tom, Ted Bilderback, Donna Fare, and Charles GilliamBest Management Practices: Guide for Producing Nursery Crops.  2nd ed. Southern Nursery Association, Atlanta, GA.

2006.  Windham, M.T., D.C. Fare, C. Pounders, and L. Vito.  Success of Encore Azaleas in the Mid South. Proc of the Southern Nursery Assoc. Res. Conf. 51:471-472.

2006.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.    Development of Erysiphe pulchra, the causal agent of powdery mildew, on susceptible and resistant flowering dogwood leaf disks. Canadian J. of Plant Path.  28:71-76.

2006.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.   Microscopic and macroscopic studies on resistance responses to daylily rust.  Proc of the Southern Nursery Assoc. Res. Conf. 51:234-238.

2006.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.  Epidemiology of powdery mildew on resistant and susceptible flowering dogwood cultivars.  Proc of the Southern Nursery Assoc. Res. Conf. 51:239-243.

2007.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.  Evaluation for resistance to powdery mildew in Cornus species and hybrids using a leaf disk assay.  J. Environ. Hort.  25:131-133.

2007.  Li, Y.H., M.T. Windham, R.N. Trigiano, D.C. Fare, J.M. Spiers, and W.E. Copes.  Microscopic and macroscopic studies of the development of Puccinia hemerocallidis in resistant and susceptible daylily cultivars.  Plant Disease 91:664-668.

2008.  Bush, E., W. Dunwell, D. Ingram, A. Owings, G. Blythe, W. Klingaman, D. Fare, C. Pounders, A. Niemiera, J. Nowak, J. Robbins, J. Lindstrom, J. Ruter, G. Knox, M. Scheiber, A. LeBude, T. Ranney, M. Arnold and T. West.  A historical summary of plant material evaluations by SERA-IEG 27.  Proc. Southern Nursery Assoc. Res. Conf.  53:156-158.

2008.  Scholl, S.S. and D.C. Fare.  Root scoring of container-grown maples and oaks.  Proc. Southern Nursery Assoc. Res. Conf. 53:63-67.

2008. Scholl, S.S. and D.C. Fare.  Performance of cold hardy camellias in Tennessee.  Proc. Southern Nursery Assoc. Res. Conf. 53:419-424.

2009.  Li, Y.H., R.N. Trigiano, M.T. Windham, L.T. Vito, D.C. Fare, J.M. Spiers, and W.E. Copes.  Inhibition of urediniospore germination in Puccinina hemerocallidis by Bacto Agar and changes in percent germination and germ-tube elongation on agarose over time.  Can. J. Plant Pathol.  31:163-168.

2009.  Oliver, J.B., D.C. Fare, N. Youssef, M.A. Halcomb, M.E. Reding, and C.M. Ranger.  Evaluation of systemic insecticides for potato leafhopper control in field-grown red maple.  J. of Environ. Hort. 27(1):17-23.

2009. Oliver, J.B., D.C. Fare, C.M. Ranger, N. Youssef, S. Scholl, M.A. Halcomb, M.E. Reding, and J.J. Moyseenko.  Leafhopper control in field-grown red maples with systemic insecticides.  Proc. Southern Nursery Assoc. Res. Conf. 54:158-162.

2009. Scholl, S.S. and D.C. Fare.  Fertilizer and potting time impacts growth of containerized oak liners.  Proc. Southern Nursery Assoc. Res. Conf. 54:180-185.

2010.  Fare, D.C and M.A. Halcomb.  Hail damage recovery on ornamental trees.  Proc. Southern Nursery Assoc. Res. Conf.  55:142-148. 

2010.  Oliver, J.B., D.C. Fare, N. Youssef, S.S. Scholl, M.E. Reding, C.M. Ranger, J.J. Moyseenko and M.A. Halcomb.  Evaluation of insecticides for flatheaded borer management in field-grown red and sugar maples.  Proc. Southern Nursery Assoc. Res. Conf.  55:253-258. 

2010.  Oliver, J.B., D. C Fare, N. Youssef, S.S. Scholl, M.E. Reding, C.M. Ranger, J.J. Moyseenko and M.A. Halcomb.  Evaluation of a single application of neonicotinoid and multi-application contact insecticides for flatheaded borer management in field grown Acer rubrum L. cultivars.  J. Environ. Hort. 28:135-149.

2010.  Pounders, C.T., E.K. Blythe, D.C. Fare, G.W. Knox, and J.L. Sibley.  Crapemyrtle genotype × environment interactions and trait stability for plant height, leaf-out, and flowering.  HortScience 45:198-207.

2011.  Fare, D.C.  A comprehensive evaluation of yellow-flowering magnolias.  Magnolia. 90:13-29. 

2011. Fare, D.C.  Does potting depth of container grown maples affect landscape performanceProc. Southern Nursery Assoc. Res. Conf.  56:336-340.   

2012. Fare, D.C.  The feather pot: A keratin-based nursery container. Proc. Southern Nursery Assoc. Res. Conf.  57: 16-22.

2012. Fare, D.C.  Performance of yellow flowering magnolias in Tennessee. Proc. Southern Nursery Assoc. Res. Conf.  57: 190-196.

2012.  Fare, D.C.  Evaluation of spectral light management on growth of container-grown willow oak, nuttall oak and summer red maple.  J. Environ. Hort. 30:8-12.

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