Dr. Karen Renner
A482 Plant and Soil Sciences Building
Department of Plant, Soil and Microbial Sciences
East Lansing, MI 48824-1325
Phone: (517) 355-0271 ext. 233
Fax: (517) 353-5174
Joined Department: April 1986
Appointment: 75% Teaching, 25% Research (2003-Present)
50% Extension, 50% Research (1986-2003)
Ph.D. Crop and Soil Sciences, Michigan State University, 1986
M.S. Agronomy, University of Wisconsin, 1983
B.S. Crop and Soil Sciences, Michigan State University, 1978
Weed seedbank dynamics including: Weed seed rain. Weed emergence by growing degree days. Weed seed dormancy due to maternal effects. Weed seed predation and weed seed decay. Influence of fertilizer on weed seed germination and emergence.
CSS 101- Introduction to Crop Science
Principles of crop management, improvement, and fertilization. International and sustainable agriculture. Water quality issues.
CSS 135- Crop Scouting and Investigation
Crop production, pest scouting and other production problems, and field diagnoses. Interaction with agriculture clientele. Offered half of semester.
CSS 488- Agricultural Cropping Systems: Integration and Problem Solving
Integration and synthesis of agronomic and related concepts in agricultural cropping systems. Problem solving and applicaiton of information.
CSS 802- Weed Biology
Weed biology, including weed seed production and dispersal and seed fate. Weed life history traits and ecophysiology, including invasive species. Data collection in weed ecology research.
Selected Recent Publications
Hill, E. C., K. A. Renner, and C. L. Sprague. 2014. Henbit, common chickweed, shepherd's-purse, and field pennycress: Fecundity, seed dispersal, dormancy, and emergence. Weed Sci. 62:97-106.
Davis, A. S., E. C. Taylor, E. R. Haramoto, and K. A. Renner. 2013. Annual postdispersal weed seed predation in contrasting field environments. Weed Sci. 61:296-302.
Taylor, E. C., K. A. Renner, and C. L. Sprague. 2012. Organic Weed Management in Field Crops with a Propane Flamer and Rotary Hoe. Weed Technol. 26:793-799.
Poling, K.W., K.A. Renner, and D. Penner. 2009. Dry edible bean (Phaseolus vulgaris) class and cultivar response to dimethenamid and metolachlor. Weed Technol. 23:73-80.
Kemp, N., E. C. Taylor, and K. A. Renner. 2009. Weed management in glyphosate- and glufosinate-resistant sugar beet. Weed Technol. 23:416-424
Thelen, K.D., Renner, K.A., and L. Copeland. 2009. Crop-o-Rama: Exposing Youth to Educational and Career Opportunities in Agriculture. J. of Extension 47:4 Article # 4IAW3 http://www.joe.org/joe/2009august/iw3.php
Taylor, E., K. Renner, and C. Sprague. 2008. Integrated Weed Management: Fine Tuning the System. Michigan State University Extension bulletin E-3065, 132pp.
Schutte, B. J., A. S. Davis, K. A. Renner, and J. Cardina. 2008. Maternal and burial environment effects on seed mortality of velvetleaf (Abutilon theophrasti) and giant foxtail (Setaria faberi). Weed Sci. 56:834-840.
Sweeney, A. E., K. A. Renner, C. Laboski, and A. Davis. 2008. Effect of fertilizer nitrogen on weed emergence and growth. Weed Sci. 56:714-721.
Davis, A. S., B. J. Schutt, J. Iannuzzi, and K. Renner. 2008. Chemical and physical defense of weed seeds in relation to soil seedbank persistence. Weed Sci. 56:676-684.
White, S. S., K. A. Renner, F. D. Menalled, and D. A. Landis. 2007. Feeding preferences of weed seed predators and the effect on weed emergence. Weed Sci. 55:606-612.
Davis, A. S. and K. A. Renner. 2007. Influence of seed depth and pathogens on fatal germination on velvetleaf (Abutilon theophrasti) and giant foxtail (Setaria faberi). Weed Sci. 55:30-35.
Harder, D. B., C. L. Sprague, and K. A. Renner. 2007. Effect of soybean row width and population on weeds, crop yield, and economic return. Weed Technol. 21:744-752.
Harder, D. B., C. L. Sprague, C. D. DiFonzo, K. A. Renner, E. J. Ott, and W. G. Johnson. 2007. Influence of stem boring insects on common lambsquarters (Chenopodium album) control in soybean with glyphosate. Weed Technol. 21:241-248.
Rich, A. M. and K. A. Renner. 2007. Row spacing and seeding rate effects on Eastern black nightshade (Solanum pyticanthum) and soybean. Weed Tech. 21:124-130.
Menalled, F. D., M. Liebman, and K. A. Renner. 2006. The Ecology of Weed Seed Predation in Annual Cropping Systems, pages 297-327 in Handbook of Sustainable Weed Management. Daizy R. Batish, Ed. Haworth Press, Inc., Binghamton, NY
Dale, T. M., K. A. Renner, and A. N. Kravchenko. 2006. Effect of Herbicides on Weed Control and Sugarbeet (Beta vulgaris) yield and quality. Weed Technol. 20:150-156
Dale, T.M. and K. A. Renner. 2005. Timing of postemergence micro-rate applications based on growing degree days in sugarbeet. Journal of Sugar Beet Research 42:87-102.
Dale, T. M., J. M. McGrath, and K. A. Renner. 2005. Response of sugarbeet varieties and populations to postemergence herbicides. Journal of Sugar Beet Research 42:119-126
Davis, A. S., J. Cardina, F. Forcella, G. A. Johnson, G. Kegode, J. L. Lindquist, E. C. Luschei, K. A. Renner, C. L. Sprague, and M. M. Williams. 2005. Environmental factors affecting seed persistence of annual weeds across the U.S. corn belt. Weed Sci. 53:860-868.
Davis, A. S., K. A. Renner, and K. L. Gross. 2005. Weed seedbank and community shifts in a long-term cropping systems experiment. Weed Sci. 53:296-306
Lee, C. D., K. A. Renner, D. Penner, R. Hammerschmidt, and J. D. Kelly. 2005. Glyphosate-resistant soybean management system effect on Sclerotinia Stem Rot. Weed Technology 19:580-588
Davis, A. , K. Renner, C. Sprague, L. Dyer, and D. Mutch. 2005. Integrated Weed Management: "One Year's Seeding..." a new Extension Bulletin. Michigan State University Extension bulletin E-2931, pp, 112.
Dalley, C. D., J. J. Kells, and K. A. Renner. 2004. Effect of glyphosate application timing and row spacing on corn (Zea mays) and soybean (Glycine max) yields. Weed Technol. 18: 165-176.
Dalley, C. D., J. J. Kells, and K. A. Renner. 2004. Effect of glyphosate application timing and row spacing on weed growth in corn (Zea mays) and soybean (Glycine max). Weed Technol. 18:177-182
Nelson, K. A., K. A. Renner, and R. Hammerschmidt. 2002. Cultivar and herbicide selection affects soybean development and the incidence of Sclerotinia Stem Rot. Agronomy J. 94:1270-1281
Swinton, S. M., K. A. Renner, and J. J. Kells. 2002. On-farm comparison of three postemergence weed management decision aids in Michigan. Weed Technol. 16:691-698
Nelson, K. A. and K. A. Renner. 2002. Yellow nutsedge (Cyperus esculentus) control and tuber production with glyphosate and ALS-inhibiting herbicides. Weed Technol. 16:512-519.
Nelson, K.A., K. A. Renner, and D. Penner. 2002. Yellow nutsedge (Cyperus esculentus) control and tuber yield with glyphosate and glufosinate. Weed Technol. 16:360-36
Nelson, K.A., K. A. Renner, and R. Hammerschmidt. 2002. Effects of protoporphyrinogen oxidase inhibitors on soybean (Glycine max L.) response, Sclerotinia sclerotiorum disease development, and phytoalexin production by soybean. Weed Technol. 16:353-359.