Lynn Brandenberger

PhD:     Plant Science, University of Arkansas, Fayetteville, AR 1992
Mag:     Horticulture, Texas A&M, College Station, TX 1983
BS:       Horticulture, Oklahoma State University, Stillwater, OK  1977

Extension Activities

Lynn Brandenberger is a horticulturist with major responsibilities for serving the needs of the commercial vegetable industry in Oklahoma. He is responsible for leading extension and research programs focused on enhancing the yield, quality and safety of fresh and processed vegetables. His program addresses the cultural aspects of vegetable production, leading efforts state wide for crop cultural concerns, weed control and food safety. His research and demonstration program has been instrumental in cooperating with producers and county extension educators to determine industry needs and how to address those needs. Past and ongoing work includes: Variety evaluations, fertility, irrigation, mulches, crop enhancement compounds and population studies; Herbicide screening and rate studies in several vegetable crop groups; Studies regarding the potential for microbial contamination in fresh produce; Soil improvement through cover crop use. In addition, he has published results of his work through peer reviewed journals and written numerous applied research reports. His work has been implemented through collaborations with researchers, producers and county extension staff throughout the state and nation. Current and past projects include evaluation of vegetable cultivars and screening of new weed control materials for use in vegetable crops. Detailed results of these studies are included in the 2005-2009 Vegetable Trial Reports and are available through the Department of Horticulture at Oklahoma State University. Extensive and complete data information can be found on the following web site: Vegetables

Professional Experience

2007 to present: Professor & Horticulture Food Crops Extension & Research Specialist, Oklahoma State University.

2001-2007: Associate Professor & Horticulture Food Crops Extension & Research Specialist, Oklahoma State University.

2001: Professor & Extension Horticulturist, Texas Agricultural Extension Service, Texas A&M University System.

1992-2000: Associate Professor & Extension Horticulturist, Texas Agricultural Extension Service, Texas A&M University System.

1987-1992: Research Assistant, University of Arkansas, Departments of horticulture and plant pathology, University of Arkansas.

1984-1987: County Extension Horticulturist, Oklahoma State Cooperative Extension Service, Commanche, Caddo, Canadian and Grady Counties, Oklahoma.

1980-1984: County Extension Horticulturist, Texas Agricultural Extension Service, Smith County, Texas.


Short Courses taught
  • Food processing short course at Mongolia International University taught during three weeks of spring semester 2009. He was a member of the team that developed and taught this new course for MIU. His role was the development and delivery of part of the food safety section of the course including overall course introduction, good agriculture practices, good management practices, and several aspects of HACCP. This three credit course included 45 hours of instruction by the four member team.
  • March 2009, 2010: Consulted with Mexican agricultural producers in the state of Zacatecas. Primary activities included soil testing, consultation on soil fertility and introducing producers to basic concepts of soil fertility management. Consultations also included advice on vegetable and fruit crops and vegetable variety trials.
  • May-June 2009: Consulted with university, government officials, and development agencies regarding the development of agriculture within Mongolia. Mongolia agriculture currently consists primarily of migratory herding including cattle, sheep, and goat production. Arable farm land is available within the country for crop production and is being investigated by development agencies for leasing for crop production and for the development of production by native Mongolian agriculture.


Brandenberger, L., Kahn, B., Gray, S., Shrefler, J., Roberts, W., Taylor, M., Upson, S., Rohla, C., Laughlin, J.  2012.  Extended season leafy greens for health and wealth: A report on cool season leafy greens production trials in high tunnels. HortScience 47 (9): S35 available at:

Stafne, E., Brandenberger, L., Carrier, L., Carroll, B.  2012.  Preemergence herbicide screening for weed control in grapes.  HortScience 47 (9): S57 available at:

Webber, C.L. III, Shrefler, J.W., and Brandenberger, L.P.  2012.  Onion Weed Control with Post-Directed Applications of Pelargonic Acid. SWSS.

Webber, C.L. lll, Brandenberger, L.P., Shrefler, J.W., Taylor, M.L., J.W., Wells, L.K., and Shannon, D.K. 2008. Weed Control with the Precision Application of Ammonium Nonanoate. Precision Agriculture Journal. In-press, 2009.

Brandenberger, L., Cavins, T., Payton, M., Wells, L., Johnson, T. 2007. Yield and Quality of Spinach Cultivars for Greenhouse Production in Oklahoma. HortTechnology 17(2): 269-272.

Shrefler, J.W., Brandenberger, L.P., Webber, C.L., Roberts, W., Payton, M.E., and Wells, L.K. 2007. Postemergence weed control using halosulfuron in direct-seeded watermelon. Weed Technology 21 (4): 851-856.

Burgos, N.R., Brandenberger, L.P., Stiers, E.N., Shivrain, V.K. Motes, D.R., Eaton, S., Martin, L.W., Morelock, T.E. 2007. Tolerance of selected advanced cowpea (Vigna unguiculata L.) breeding lines to fomesafen. Weed Technology 21(4): 863-868.

Brandenberger, L.P., Shrefler, J.W., Webber, C.L. III, Talbert, R.E., Payton, M.E., Wells, L.K., Mcclelland, M. 2007. Injury potential from carryover of watermelon herbicide residues. Weed Technology 21 (2): 473-476.

Brandenberger, L., McGlynn, W., Wells, L., Bostian, B., and Payton, M. 2007. Production and Quality Evaluations of Processing Carrots. HortTech 17 (1):133-135.

Brandenberger, L.P., Shrefler, J.W., Webber C.L., Talbert, R.E., Payton, M.E., Wells, L.K., McClelland, M. 2005. Preemergence Weed Control in Direct-Seeded Watermelon (Citrullus lanatus). Weed Technology 19 (3):706-712.

Brandenberger, L.P., Talbert, R.E., Wiedenfeld, R.P., Shrefler, J.W., Webber, C., and Malik, S. 2005. Effects of Halosulfuron on Weed Control in Commercial Honeydew Crops. Weed Technology 19 (2):346-350.

Brandenberger, L.P.,Wells, L.K., and Haigh, M.M. 2004. Yield and quality characteristics of spring spinach grown in Oklahoma. HortTechnology 14:602-605.

Norsworthy, J. K., L. Brandenberger, N. Burgos, and M. Riley. 2004.. Weed suppression in Vigna unguiculata with a spring-seeded brassicaceae green manure. Crop Protection 24 (5):441-447.

Smart, J.R., Brandenberger, L., and Makus, D. 2001. Cabbage (Brassica oleracea L.) response to sulfentrazone for broadleaf weed control. Journal of Vegetable Crop Production 7 (2): 97-108.

Wiedenfeld, R.P., and Brandenberger, L.P. 2000. Evaluation of a natural fertilizer for vegetable production in the Lower Rio Grande Valley of Texas. Subtropical Plant Science Journal 52: 12-17

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