Lynn Brandenberger
Email: lynn.brandenberger@okstate.edu |
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PROFESSIONAL EXPERIENCE
2001-present: Associate Professor & Horticulture Food Crops Extension & Research Specialist, Oklahoma State University
1992-2000: Associate Professor & Extension Horticulturist, Texas Agricultural Extension Service, Texas A&M University System
1987-1992: Research Assistant, Departments of horticulture and plant pathology, University of Arkansas
1984-1987: County Extension Horticulturist, Oklahoma State Cooperative Extension Service, Commanche County, Caddo, Canadian and Grady Counties, Oklahoma
1980-1984: County Extension Horticulturist, Texas Agricultural Extension Service, Smith County, Texas
Lynn Brandenberger is a horticulturist with major responsibilities for serving the needs of the commercial vegetable industry in Oklahoma. Dr. Brandenberger 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 agents to determine what industry needs are 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. 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 his many 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 2003 Vegetable Trial Report 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: http://www.hortla.okstate.edu/hortla/vegtrial.htm
REFEREED JOURNAL PUBLICATIONS
Brandenberger, L., Cavins, T., Payton, M., Wells, L., Johnson, T. 2006. Yield and Quality of Spinach Cultivars for Greenhouse Production in Oklahoma. HortTechnology accepted for publication 02/07 HORTTECH-00765.
Shrefler, J.W., Brandenberger, L.P., Webber, C.L., Roberts, W., Payton, M.E., and Wells, L.K. 2006. Postemergence weed control using halosulfuron in direct-seeded watermelon. Accepted for publication 02/07 Weed Technology WT 06-175.
Burgos, N.R., Brandenberger, L.P., Stiers, E.N., Shivrain, V.K. Motes,
D.R., Eaton, S., Martin, L.W., Morelock, T.E. 2006. Tolerance
of selected advanced cowpea (Vigna unguiculata L.) breeding lines to fomesafen.
Weed Technology Accepted with revisions 02/07 WT-06-154.
Brandenberger, L.P., Shrefler, J.W., Webber, C.L. III, Talbert, R.E.,
Payton, M.E., Wells, L.K., Mcclelland, M. 2006. Vegetable crop
injury from sulfonylurea herbicide residues. Weed Technology accepted for
publication 12/06 WT-06-082.
Brandenberger, L., McGlynn, W., Wells, L., Bostian, B., and Payton,
M. 2006. Production and Quality Evaluations of Processing Carrots.
HortTech 17 (1) in press.
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.
Research Activities: Brian Kahn conducts research focusing
on sustainable cultural and management practices for improved yield and
quality of vegetables in Oklahoma. While he is primarily an applied
scientist, he also conducts some more basic research, especially studies
involving vegetable root systems. The long term goal is to provide
knowledge which will support the expansion of a sustainable commercial
vegetable industry in Oklahoma. Current areas of emphasis include:
Sustainable Pest Management Strategies. A cooperative study with
Plant Pathology will examine integrated strategies for management of beet
curly top virus in tomatoes. Corn gluten meal will be tested for
weed control in bell peppers and in selected direct-seeded specialized
crops for value-added markets.
Diversification of Oklahoma Vegetable Production. Applied research
and cultivar trials are conducted as necessary to provide cultural suggestions
to growers. The goal is to expand high-quality production of vegetables
that traditionally have been minor crops in Oklahoma, with emphasis on
the cole crops and peppers. Cultural practices are being developed
to facilitate mechanical harvest of cilantro. Detailed information
is being developed on eggplant cultivar adaptation, including modeling
of yield development in cooperation with the Department of Statistics.
Selected Recent Publications
Kahn, B.A. and D.I. Leskovar. 2006. Cultivar
and plant arrangement effects on yield and fruit quality of bell pepper.
HortScience 41:1565-1570.
Kahn, B.A., J.K. Hyde, J.C. Cole, P.J. Stoffella, and D.A. Graetz. 2005. Replacement of a peat-lite medium with compost for cauliflower transplant production. Compost Sci. & Utiliz. 13:175-179.
Kahn, B.A., J.P. Damicone, and R.J. Schatzer. 2005. Alternatives to benomyl for management of Cercospora leaf spot on turnip greens. HortScience 40:1324-1326.
Kahn, B.A., Y. Wu, N.O. Maness, J.B. Solie, and R.W. Whitney. 2003. Densely planted okra for destructive harvest: III. Effects of nitrogen nutrition. HortScience 38:1370-1372.
Wu, Y., B.A. Kahn, N.O. Maness, J.B. Solie, R.W. Whitney, and K.E. Conway. 2003. Densely planted okra for destructive harvest: II. Effects on plant architecture. HortScience 38:1365-1369.
Wu, Y., B.A. Kahn, N.O. Maness, J.B. Solie, R.W. Whitney, and K.E. Conway. 2003. Densely planted okra for destructive harvest: I. Effects on yield. HortScience 38:1360-1364.
Stoffella, P.J. and B.A. Kahn (eds.). 2001. Compost utilization
in horticultural cropping systems. Lewis Publishers, Boca Raton,
Fla. 414 pages.
B. Warren Roberts
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Research Activities: Warren is located at the Wes Watkins Agricultural Research and Extension Center in southeastern, Oklahoma. This center was designed to develop and promote horticultural cropping systems. His research projects are based on soil fertility and cultural management of vegetables. Most projects are applied and interdisciplinary, and include the efforts of an OSU weed scientist and an OSU agricultural economist who are also located at this center. Current research emphasis is placed on organic production of vegetables, and also upon development of systems that encourage locally grown and locally marketed vegetables. Current projects include cultivar selection of vegetables that can be consumed with minimal processing, and upon season extension techniques that will allow vegetables to be produced earlier in the spring and later in the fall. Other projects are underway to determine the value and limitations of poultry litter as a soil fertilizer in vegetable production.
Extension Activities: Field days, farm demonstrations, and county
extension educator and grower training sessions are used to disseminate
information obtained from research projects, most of which are interdisciplinary.
Projects include soil fertility and cultural management of vegetables.
Current focus is on organic production and on locally grown and distributed
vegetable systems.
Selected Publication:
Perkins-Veazie, Julie K. Collins, Angela R. Davis, and Warren Roberts.
2006. Carotenoid content of 50 watermelon cultivars. J. Agric.
Food Chem. 2006, 54, 2593-2597.
Lu, Wenhua, B. Warren Roberts, Merritt J. Taylor, Jonathan V. Edelson, Carla Goad, William D. Warde, Seong S. Chae. Production systems and association of management factors affecting productivity of Watermelon. Journal Vegetable Science. In Press.
Edelson, J.V. and W. Roberts. 2005. Watermelon Growth And Yield Reductions Caused By Squash Bug (Hemiptera: Coreidae) Feeding. Southwestern Entomol. 30(1): 17 – 22.
Dogramaci, M., J. W. Shrefler, B. W. Roberts, S. Pair and J. V. Edelson. 2004. Management strategies for squash bug (Hemiptera: Coreidae) in watermelon. J. Econ. Entom. 97: 1999 – 2005.
Perkins-Veazie, P., and W. Roberts. 2004. Can potassium application affect the mineral and antioxidant content of horticultural crops? Proc. Of Symposium on Fertilizing Crops for Functional Food. Potash & Phosphate Institute, Soil Science Society of American, Crop Science Society of America, American Society of Agronomy. Chap. 2(1-5).
Dogramaci, M., Wenhua. Lu, B. Warren Roberts, Jim W. Shrefler, Mark Payton, Merritt J. Taylor, James A. Duthie, and J. V. Edelson. 2004. Occurrence and abundance of watermelon (Citrullus lanatus) arthropod pests in Oklahoma. SW Entomologist. 29(2):99-110.
Lu, Wenhua, J.V. Edelson, Jim A. Duthie, and B. Warren Roberts. 2003. A comparison of yield between high- and low-intensity management for three watermelon cultivars. HortScience 38(3):351-356.
Edelson, J.V., J. Duthie , and W. Roberts . 2003. Watermelon growth, fruit yield and plant survival as affected by squash bug (Hemiptera: Coreidae) feeding. J. Econ. Entomol. 96(1):64-70.
Lu, Wenhua, B. Warren Roberts, James A. Duthie, James W. Shrefler, Merritt J. Taylor, and Jonathan V. Edelson. 2003. Characteristics and geographic variation of watermelon (Citrullus lanatus) production in Oklahoma from a statewide survey. J. Veg. Crop. Prod. 9(1):33-48.
Lu, Wenhua, James A. Duthie, B. Warren Roberts, Merritt J. Taylor, Jonathan V. Edelson. 2003. Partial budget analysis of effects of crop management intensity on profitability of three watermelon cultivars. J. Veg. Crop. Prod. 9(1):49-71
Williams, T.V. and W. Roberts. 2002. Is vegetable variety evaluation and reporting becoming a lost art? HortTechnology. 12(4): pp 553-559.
Edelson, J.V., J. Duthie and W. Roberts. 2002. Watermelon seedling growth and mortality as affected by Anasa tristis (Heteroptera: Coreidae). J. Econ. Entomol. 95(3):595-597.
Perkins-Veazie, P., J. K. Collins, S. D. Pair, and W. Roberts.
2001. Lycopene content differs among red-fleshed watermelon cultivars.
J. Sci. Food and Agric.
81(10): 983-987.
Edelson, J.V., J. Duthie and W. Roberts. 2002. Toxicology
of biorational insecticides: Activity against the green peach aphid
(Myzus persicae (Sulzer)). Pest
Management Science. 58:255-260.
Roberts, W., J. Duthie, J. Edelson, B. Cartwright, J, Shrefler, N. Roe.
1999. Limitations and Possibilities for Some Conservation Tillage
Systems with Vegetable
Crops in the Southern Plains of the United States. HortTechnology
9(3): 359-365.
Duthie, J.A., Shrefler, J.W., Roberts, B.W., and Edelson, J.V. 1999. Plant density-dependent variation in marketable yield, fruit biomass, and marketable fraction in watermelon. Crop Science 39:406-412.
Duthie, J.A., Roberts, B.W., Edelson, J.V., and Shrefler, J.W. 1999.
Plant density-dependent variation in density, frequency, and size of watermelon
fruits. Crop
Science 39:412-417.
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Horticulture and Landscape Architecure Department Agricultural Sciences and Natural Resources Oklahoma State University February 2007• 360 Agriculture Hall, Oklahoma State University,
Stillwater, Oklahoma 74078 • Phone: 405.744.5414
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