My primary area deals with the production and management of forage crops. This involves both warm-season and cool-season grass and legume forage crops. I also am responsible for an extension programs dealing with wheat production.
I perform applied research projects dealing with pasture weed control. This involves the comparison of different herbicide products for control of broadleaf and grassy weeds in pastures, hayfields and fence rows.
I am also responsible for several 4-H activities, including being the superintendent of the Plant Science Contest during 4-H University.
I worked as an extension specialist in the area of forage crops in South Dakota from 1987 to 1994 before moving to the LSU AgCenter in 1995. I work closely with extension agents throughout the state in providing educational programs dealing with forages and wheat. This involves demonstration field plots, meetings, field days, producer visits, writing publications, phone calls and emails. My appointment with the LSU AgCenter is 100 percent extension.
Twidwell, E.K., M.W. Alison, W.D. Pitman, K. Han, T. Doughty, G. Williams and J.L. Ashley. 2009. Cool-season pasture and forage varieties. LSU AgCenter pub no. 2334.
Twidwell, E.K. and R.E. Strahan. 2009. Control of broadleaf weeds in pastures using non-2,4-D containing herbicides. LSU AgCenter Beef and Forage Report. Vol. 35, p. 40-42.
Twidwell, E.K., R.E. Strahan and J.G. Wicke. 2008. Huisache control using broadleaf herbicides. Abstract #1617. In: Volume 17. Proceedings of the American Forage and Grassland Council. 26-31, January 2008, Louisville, KY.
Devillier, J.E., E.K. Twidwell, T.G. Page and D. Hoover. 2008. The Louisiana forage-based bull performance testing program. Abstract #2460. In: Volume 17. Proceedings of the American Forage and Grassland Council. 26-31, January 2008, Louisville, KY.
Twidwell, E.K. and R.E. Strahan. 2007. Use of weed control demonstration plots to enhance forage educational programs. Page 180. In: Proceedings of the National Association of County Agricultural Agents, 15-19, July, Grand Rapids, MI.
Twidwell, E.K., T.H. Shields, J.M. Meaux and R.E. Strahan. 2007. Control of wax myrtle with broadleaf herbicides. LSU AgCenter Beef and Forage Report. Vol. 34, p. 38-39.
Twidwell, E.K., R.E. Strahan, S.J. Dutile and W.A. Hogan. 2007. Control of horsenettle in Louisiana pastures. LSU AgCenter Beef and Forage Report. Vol. 34, p. 36-37.
Twidwell, E.K. and J. Cheston Stevens. 2006. Effects of hurricanes Katrina and Rita on Louisiana’s forage resource. Page 168. In: Proceedings of the National Association of County Agricultural Agents, 23-28 July, 2006, Cincinnati, OH.
Strahan, R.E. and E.K. Twidwell. 2006. Curly dock control in fall-planted annual ryegrass. Page 234. In: Volume 15. Proceedings of the American Forage and Grassland Council. 11-14, March, 2006, San Antonio, TX.
Twidwell, E.K., R.E. Strahan, S. Dutile and A. Hogan. 2005. Controlling horsenettle in Louisiana pastures. Louisiana Cattleman. 38(6):12.
Twidwell, E.K. and R.E. Strahan. 2004. White clover tolerance to broadleaf herbicides. Louisiana Cattleman. 37(8): 14.
Twidwell, E.K. and B. Venuto. 2004. Teaching a forage crops course to Extension agents via distance education. Journal of Extension. 42(4). www.joe.org/joe/2004august/tt3.shtml.
Twidwell, E.K., R.E. Strahan and S.J. Dutile. 2003. Control of smutgrass in Louisiana pastures. Louisiana Cattleman. 36(6): 8-9.
Venuto, B.C., J.D. Ward and E.K. Twidwell. 2003. Effects of soil type and soil chemical composition on nutrient content of annual ryegrass for beef and dairy cow nutrition. Journ. Plant Nutr. 26(9): 1789-1799.
Gelderman, R.H., J.R. Gerwing and E.K. Twidwell. 2002. Point-injected phosphorus effects on established cool-season grass. Agron. J. 94:48-51.