Published Research


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.

Whitford, F., G. Lindner, B. Young, D. Penner, J. Deveau, D. Linscott, H. Zhu, R. Zollinger, E. Spandl, B. Johnson, K. Wise, A. Patton, C. Champion, N. Wagoner and K.L. Smith.  2014.  Understanding Adjuvants and the Spray Droplet.  Improving the Dose-Transfer from the Tank to the Target Pest.  Purdue Extension PPP-107, p. 82.

Penner D. and J. Michael. 2014.  Water conditioners and growth regulator herbicides.  JAI 10:ASTM STP 1579.  pp. 1-8.

Penner, D. and J. Michael.  2014.  A bioassay for evaluating herbicide volatility from soils and plants.  JAI 9:ASTM STP1569. pp. 36-43.


Bethke, R.K., W. Molin, C.L. Sprague, and D. Penner. 2013. Evaluation of the interaction between glyphosate and glufosinate. Weed Sci: 61:41-47.

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.


Sprague, C. L. and W. J. Everman.2011. Weed control guide for field crops. Michigan State University.Ext. Bulletin E-434.Pp. 184.

Penner, D., R. Coleman, and J. Michael. 2011. Novel formulations of an organic acid herbicide. Pesticide Formulations and Delivery Systems.  31st Volume, ASTM STP 1537, B. Devisetty, ed. ASTM International, West Conshohocken, PA. pp. 63-71.

Penner, D., R. Coleman, and J. Michael. 2011. Adjuvants and formulations of an organic acid herbicide.  JAI 8:1-5.

Penner, D. and J. Michael. 2011. Spray solution pH and glyphosate actitivity. Pesticide Formulations and Delivery Systems. 30th Volume, ASTM STP 1527, A.D. Lindsay and R. Zollinger, eds. ASTM International, West Conshohocken, PA, pp. 129-136.


Penner, D. and J. Michael. 2010. The effect of pH on glyphosate activity and water conditioning. JAI 7:JAI102770 pp. 1-6.  

Kowalewski, A. R., Calhoun, R. N., Hathaway, A. D. and J. N. Rogers III. 2010. Using cultural practices and leaf mulch to control weeds in established turfgrass. Applied Turfgrass Science. April 16. p. 1-10.


Whitford, F., D. Penner, B. Johnson, L. Bledsoe, N. Wagoner, J. Garr, and K. Wise. 2009. The Impact of Water Quality on Pesticide Performance.  Purdue Extension P86, 38 p. 

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.

Bernards, M.L., D. Penner and J. Michael. 2009. Imazapyr absorption and translocation in Northern red oak and red maple as affected by herbicide formulation and adjuvant methylated seed oil.  JAI 6:1-10.

Everman, W. J., C. L. Sprague, S. A. Gower, and R. J. Richardson. 2009. An IPM Pocket Guide for Weed Identification in Field Crops. Michigan State University. Ext. Bulletin E-3081. Pp. 173.

Jordan, T., G. Nice, R. Smeda, C. Sprague, M. Loux, and B. Johnson. 2009. Biology and management of common ragweed. Purdue University. Extension Publication GCW-14.

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 


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.

Clewis, S. B., W. E. Thomas, W. J. Everman, and J. W. Wilcut. 2008. Glufosinate-resistant corn interference in glufosinate-resistant cotton. Weed Technol. 22:211-216.

Simarmata, M. and D. Penner. 2008. The basis for glyphosate resistance in rigid ryegrass (Lolium rigidum) from California. Weed Sci. 56:181-188.

Bollman, S. L., C. L. Sprague, and D. Penner. 2008. Physiological basis for tolerance of sugar beet varieties to s-metolachlor and dimethenamid-p. Weed Sci. 56:18-25.

Everman, W. J., S. B. Clewis, W. E. Thomas, I. C. Burke, and J. W. Wilcut. 2008. Critical period of weed interference in peanut. Weed Technol. 22:63-67.

Everman, W. J., I. C. Burke, S. B. Clewis, W. E. Thomas, and J. W. Wilcut. 2008. Critical period of grass vs. broadleaf interference in peanut. Weed Technol. 22:68-73.

Coleman, R. and D. Penner. 2008. Organic acid enhancement of pelargonic acid. Weed Technol. 22:38-41.

McCordick, S. A., D. E. Hillger, R. H. Leep, and J. J. Kells. 2008. Establishment systems for glyphosate-resistant alfalfa. Weed Technol. 22:22-29.


Bollman, S. L. and C. L. Sprague. 2007. Optimizing s-metolachlor dimethenamid-p in sugar beet micro-rate treatments. Weed Technol. 21:1054-1063.

Armstrong, J.-J. Q., R. D. Dirks, and K. D. Gibson. 2007. The Use of Early Season Multispectral Images for Weed Detection in Corn (Zea mays). Weed Technology. 21:857-862.

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.

Hill, E.C., M Ngouajio, and M.G. Nair. 2007. Allelopathic potential of hairy vetch (Vicia villosa) and cowpea (Vigna unguiculata) methanol and ethyl acetate extracts on weeds and vegetables. WeedTech. 21:437-444.

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.

Ott, E. J., C. K. Gerber, D. B. Harder, C. L. Sprague, and W. G. Johnson. 2007. Prevalence and influence of stalk-boring insectson glyphosate activity on Indiana and Michigan giant ragweed (Ambrosia trifida). Weed Technol. 21:526-531.

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.

Steckle, L. E., C. S. Sprague, E. W. Stoller, L. M. Wax, F. W. Simmons. 2007. Tillage, cropping systems, and soil depth effects on common waterhemp (Amaranthus rudis) seed-bank persistence. Weed Sci. 55:235-239.

Hock, S. M., S. Z. Knezevic, W. G. Johnson. C. Sprague, and A. R. Martin. 2007. Weedsoft: Effects of corn-row spacing for predicting herbicide efficacy on selected weed species. Weed Technol. 21:219-224.

Nelson, E. A. and D. Penner. 2007. Leaching of isoxaflutole and the herbicide safeners R-29148 and furilazole. Weed Technol. 21:106-109.

Franssen, A.S., and J.J. Kells. 2007. Control Strategies for Common Dandelion in No-Tillage Cropping Systems. Weed Technol. 21:18-22.

Franssen, A.S., and J.J. Kells. 2007. Common Dandelion (Taraxacum officinale Weber) Control with Postemergence Herbicides in No-Tillage Glufosinate-Resistant Corn (Zea mays L.). Weed Technol. 21:14-17.


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.

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

Zuver, K. A., M. L. Bernards, J. J. Kells, C. L. Sprague, C. R. Medlin, and M. M. Loux. 2006. Evaluation of postemergence weed control strategies in herbicide strategies in herbicide-resistant isolines of corn (Zea mays). Weed Technol. 20:172-178.


Aichele, T. and D. Penner. 2005. Adsorption, desorption, and degradation of imidazolinones in soil. Weed Technol. 19:154-159.

Bernards, M.L., K.D. Thelen, and D. Penner. 2005. Glyphosate efficacy is antagonized by manganese. Weed Technol.19:27-54.

Bernards, M.L., K.D. Thelen, D. Penner, R.B. Muthukumaran, and J.L. McCracken. 2005. Glyphosate interaction in tank-mixture with manganese and its effect on glyphosate absorption and translocation. Weed Sci 53:787-794.

Bierman, R. E., D. E. Riechers, C. L. Sprague, G. Bollero, and W. L. Pedersen. 2005. Fungicide-herbicide interaction in soybean (Glycine max). Crop Protect. 25:134-139.

Bunting, J. A., C. L. Sprague, and D. E. Riechers. 2005. Incorporating foramsulfuron into annual weed control systems for corn. Weed Technol. 19:160-167.

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., 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.

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 II. 2005. Environmental factors affecting seed persistence of annual weeds across the U.S. corn belt. Weed Sci. 53:860-868.

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.

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.

Nelson, E.A. and D. Penner. 2005. Sensitivity of selected crops to isoxaflutole in soil and irrigation water. Weed Technol. 19:659-663.

Penner, D. J. Michael, and W.G. Brown. 2005. A novel water conditioning adjuvant for use with formulated and nonformulated glyphosate. Pesticide Formulation and Application Systems: Twenty Fourth Volume, ASTM STP 1460, H.B. Lopez and G.C. Volgas, Eds., ASTM International, West Conshohocken, PA, pp. 128-133.

Penner, D., J. Michael, and W.G. Brown. 2005. A novel water conditioning adjuvant for use with formulated and nonformulated glyphosate. 12157, 2:1-6.

Schmidt, A.A., W.G., Johnson, D.A. Mortensen, A.R. Martin, A. Dille, D.E. Peterson, C. Guza, J.J. Kells, R.D. Lins, C.M. Boerboom, C.L. Sprague, S.Z. Knezevic, F.D. Roeth, C.R. Medlin, and T.T. Bauman. 2005. Evaluation of corn (Zea mays L.) yield-loss estimations by WeedSOFTÆ in the North Central Region. Weed Technol. 19:1056-1064.

Simarmata, M., S. Bughrara, and D. Penner. 2005. Inheritance of glyphosate resistance in rigid ryegrass (Lolium rigidum Gaud.) from California. Weed Sci. 53:615-619.

Williams II, M. M., J. K. Pataky, J. N. Nordby, D. E. Riechers, C. L. Sprague, and J. B. Masiunas. 2005. Cross-sensitivity in sweet corn to nicosulfuron and mesotrione applied postemergence. HortSci. 40(6):1801-1805.