Roger K. Kjelgren
Office: AGS 316
Tel: 435-797-2972; Fax:
Doctorate University of Washington, Urban Forestery, 1988.
Masters Oregon State University, Soil Science, 1984.
Bachelors Washington State University, Soil Science, 1978.
1998-Present Associate Professor, Utah State University.
1992-1998 Assistant Professor, Utah State University.
1988-1992 Assistant Professor, Southern Illinois University.
Positions in Professional Associations
Secretary Treasurer, American Society of Horticultural Science Western Region, 1992-Present.
Member, USDA Western Coordinating Committee 58-Nursery Crops, 1992-Present.
Member, American Society for Horticultural Science, 1988-Present.
Montague, D. T., R. K. Kjelgren, and L. Rupp. 2000. Surface energy balance affects gas exchange and growth of two transplanted landscape trees. J. Am. Soc. Hort. Sci. 125:299-309.
Montague, D. T. and R. K. Kjelgren. 2000. Gas exchange and growth of transplanted, field-grown trees in an arid climate. HortScience 35:763-768.
R. Kjelgren, N. Chapman, and L. Rupp.. 2000. Tree seedling establishment with protective shelters and irrigation scheduling in three naturalized landscapes in Utah.. J. Env. Hort 18:238-246..
R. Kjelgren. L. Rupp, and D. Kilgren. 2000. Water conservation in urban landscapes.. HortScience 35:1037-1043.
Ferro, A, J. Kennedy, R. Kjelgren, J. Rieder, and S. Perrin. 1999. Toxicity assessment of volatile organic compounds in poplar trees.. Int. J. Phytoremediation 1:9-17.
Cole, J. C., R. K. Kjelgren, and D L. Hensley. 1998. In-ground fabric containers as an alternative nursery crop production system. .. HorTechnology 8:159-163.
Kjelgren, R. K. and L. A. Rupp. 1998. Using HortBase in education.. HorTechnology 8:301-306.
Montague, T., R. Kjelgren, and L. Rupp.. 1998. Surface energy balance affects gas exchange of three shrub species.. J. Arboricult. 24:254-262.
Kjelgren R. and T. Montague. 1998. Urban Tree Transpiration Over Turf and Asphalt Surfaces. Atmospheric Environment 32:35-41.
Kjelgren, R., and L. Rupp. 1997. Establishment in Treeshelters I: Shelters Reduce Growth, Water Use, and Hardiness, but not Drought Avoidance. HortScience 32:1281-1283.
Kjelgren, R., T. Montague, and L. Rupp. 1997. Establishment in Treeshelters II: Effect of shelter color on gas exchange and hardiness. HortScience 32:1284-1287.
Rupp, L. and R. Kjelgren. 1997. Effect of annual shearing on growth of five high desert shrubs. J. Env. Hort 15:123-125.
Kjelgren, R. and L. Rupp. 1997. Treeshelters improve seedling establishment under herbaceous competition.. Int. Soc. Arbor. J. 23:131-135.
Kjelgren, R.. 1996. Irrigation timing of tree landscape shrub species based on foliage temperature. Arboricultural J. 20:47-57.
Kjelgren, R. K.. 1995. Variable urban irradiance and shade acclimation in Norway maple street trees. J. Arboriculture 21:145-149.
Kjelgren, R. K., and J. R. Clark. 1994. Urban microclimates and growth of sweetgum street trees.. Arboriculture J. 18:401-417.
Cleveland, B. R, and R. K. Kjelgren. 1994. Establishment of six tree species on deep-tilled minesoil during reclamation. Forest Ecol. and Management 68:273-280.
Kjelgren, R. K., C. Spihlman, B. R. Cleveland. 1994. Effect of irrigation on crabapple growth and water relations during field production with in-ground fabric containers. J. Environ. Hort. 100-103.
Kjelgren, R. K., B. R. Cleveland, M. Foutch. 1994. Establishment of white oak seedlings with three handling methods on deep-tilled minesoil during reclamation. J. Environ. Hort. 12:96-99.
Kjelgren, R. K. and B. R. Cleveland. 1994. Growth and water relations of Kentucky coffee tree and silver maple following transplanting. J. Environ. Hort. 12 108-111.
Kjelgren, R. K.. 1994. Growth and water relations of Kentucky coffee tree in protective shelters during establishment. HortScience 29:777-780.
Ashby, W. C., D. F. Bresnan, R. K. Kjelgren, P. L. Roth, J. E. Preece, C. A. Huetteman. 1994. Coppice growth and water relations of silver maple. Biomass and Bioenergy 5:317-323.
Roger Kjelgren, Ruby Ward, 2001-2004, Production of drought-adapted Intermountain native plants through low-cost in-ground containers for emerging western markets, Western Regional Sustainable Agricultural Research and Education, $71,686.
Roger Kjelgen, Ari Ferro, 1999-2000, Root system of a deep-rooted poplar at an Ogden, Utah superfund site, Scientific Applications International, Corp, $15,157.
Roger Kjelgren, Joanna Endter-Wada, Christopher Neale, 1997-2002, Farm and Landscape Water Allocation and Conservation at the Rural:Urban Interface, CSREES-National Research Initiative, $246,357.
Roger Kjelgren, Erick Miltner, Larry Rupp, Bob Tripepi, 1995-1998, Developing an Accessible Undergraduate Curriculum in Landscape Horticulture, CSREES Challenge Grant, $135,000.
Roger Kjelgren and Larry Rupp, 1995-1997, Development of an Educational Package in Landscape Water Auditing and Irrigation Scheduling, Central Utah Water Consevancy Distric, $33,000.
Roger Kjelgren and Larry RUpp, 1995-1998, Implementing Irrigation Scheduling for a School District in Salt Lake City, US Bureau of Reclamation, $67,822.
Short and Near Term Research Focus