Mark Renz


Assistant Professor/ Extension Weed Specialist
Agronomy Dept.
1575 Linden Dr
Madison, WI 53706



  • Post Doc. : USDA-ARS Exotic and Invasive Weed Research Unit, Reno NV. 2002-3.
  • Ph.D.: Integrated Plant Physiology/Biology. University of California, Davis. 2002.
  • B.S.: Botany, University of California, Davis. 1994.

Research Interests

Weed management in alfalfa and pastures: My program evaluates the effectiveness of current and new
technology in managing weeds that aid in establishment and productivity of forages as well as impacts
of utilizing this technology. Currently I am involved in these research projects:

  1. Effectiveness of Mob grazing in controlling Canada thistle in Rotationally Grazed Pastures
  2. Costs and benefits of Roundup Ready alfalfa establishment
  3. Weed-free period to maximize switchgrass establishment and productivity
  4. Effects of annual grass density of switchgrass establishment and productivity

Invasive plants in natural areas: My program also develops control methods for invasive plants in natural areas and assists in development of early detection and rapid response networks in the Great Lakes region. Currently I am involved in these research projects:

  1. Development of the Great Lakes Early Detection Network (GLEDN)
  2. Use of habitat suitability maps to improve detection of invasive plants
  3. Effectiveness of revegetation methods on reductions of invasive plant cover and spread on roadsides in Wisconsin
  4. Effectiveness of composting in eliminating viability of garlic mustard and buckthorn

Classes Taught

Weed Identification and Management (CALS Farm and Industry Short-course). Theory and application of weed management methods as well as introduction to common weed species found in common agronomic crops in Wisconsin.

Recent Publications

  • Crall, W. C., Jarnevich, C. S., Panke, B. J., Young, N., Renz, M. J., and J. Morisette. In Press. Using Habitat Suitability Models to Target Invasive Plant Species Surveys. Ecological Applications.
  • Crall, W. C., Renz, M. J., Panke, B. J., Newman, G. J., Graham, J., Chapin, C., and C. Bargeron. 2012. Developing Cost-Effective Early Detection Networks: A Regional Model. Biological Invasions. Published online June 9, 2012.
  • Renz, M. J., Steinmaus, S. J., Gilmer, D. S., and J. M. DiTomaso. 2012. Spread dynamics of perennial pepperweed (Lepidium latifolium) in two seasonal wetlands areas. Invasive Plant Science and Management 5:57-68.
  • *Miesel, J.R, Renz, M. J., Doll, J. E., and R. D. Jackson. 2012. Effectiveness of weed management methods in establishment of switchgrass and a native species mixture for biofuels in Wisconsin. Biomass and Bioenergy 36:121-31. Renz, M. J. and M. L. Schmidt. 2012. The Effects of Increasing Grazing Height on Establishment of Pasture Weeds in Management-Intensive Rotationally Grazed Pastures. Weed Science 52:14-23.
  • Crall, W. C., Renz, M. J., Panke, B., and G. J. Newman. 2011. Is there a role for the public in monitoring invasive species? CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources 6:1-7.
  • Renz, M. J. 2010. Establishment of forage grasses and legumes after fall herbicide applications. Online. Forage and Grazinglands doi:10.1094/FG-2010-0806-01-RS.
  • Renz, M. J., Gibson, K., Hillmer, J., Howe, K. Waller, D., and J. Cardina. 2009. Land manager and researcher perspectives on invasive plant research priorities in the midwestern United States. Invasive Plant Science and Management 2(1):83-91.
  • Marsalis, M.A, Lauriault, L.M., Jones, S.H. and M. J. Renz. 2008. Managing field bindweed in sorghum-wheat-fallow rotations. Online. Crop Management doi:10.1094/ CM-2008-0818-01-RS.