Richard A. Weinzierl

Education

Ph.D.	1984	Oregon State University, Corvallis, Oregon
M. S.	1979	North Dakota State University, Fargo, North Dakota
B. A.	1975	Concordia College, Moorhead, Minnesota

Current Programs

I hold an extension, teaching, and research appointment, and my emphasis since 1991 has been on insect pest management in fruit and vegetable crops. My current interests include:

• Management of insects that transmit plant pathogens to vegetable crops
• Insect management in sweet corn, with an emphasis on corn earworm resistance to pyrethroid insecticides
• Seasonal occurrence and management of insect pests of apples, peaches, and grapes

My extension programs cover the broad range of insect management issues faced by commercial growers of fruits and vegetables in Illinois, and I edit the Illinois Fruit and Vegetable News, our newsletter that provides up-to-date information on production and pest management topics.  In addition, I serve as Program Chair for the Illinois Specialty Crops Conference, a three-day program held annually in January.   

I teach Crop Sciences 270, Introduction to Applied Entomology, a course that is cross-listed as Integrative Biology 220 and NRES 270.  (The course outline and lecture notes are available on the web.)

Graduate Students who have completed programs under my advisement include:

Master's Students:

• Ramsdell, Karlene. M.S., Entomology, 1994.  Host effects on the longevity and reproduction of Spalangia nigroaenea Curtis (Hymenoptera: Pteromalidae).
• Kagezi, Godfrey.  M.S., Horticulture, 1998.  Aphids Associated with Sweet (Bell) Peppers in Southern Illinois and their Importance as Vectors of Cucumber Mosaic Virus.
• Pierce, Christopher. M.S., Horticulture, 1999.  Interactions between  Nosema pyrausta and Bacillus thuringiensis subsp. kurstaki in the European corn borer, Ostrinia nubilalis (Hubner) (Lepidoptera: Pyralidae). 
• Cook, Kelly.  M.S., Crop Sciences, 2003.  Seasonal fluctuations in population densities of the corn flea beetle, Chaetocnema pulicaria Melsheimer (Coleoptera: Chrysomelidae) and their impact on the incidence of Stewart's wilt in sweet corn.
• Marlow, Erin. M.S. Crop Sciences, 2004.  Effects of sesquiterpene carboxylic acids on the corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae

Ph.D. Students:

• Ratcliffe, Susan. Ph.D., Entomology, 1999.  Assessment of parasitism of house fly and stable fly pupae (Diptera: Muscidae) by pteromalid (Hymenoptera: Pteromalidae) parasitoids using polymerase chain reaction (PCR).
• Jones, Moneen. 2006 - .  Currently beginning her program of study and research.  Thesis to focus on an insect pest management topic in apples.

Selected Publications

Selected Journal Articles:

• Weinzierl, R. A., R. E. Berry and G. C. Fisher. 1986. Sweep-net sampling for western spotted cucumber beetle (Coleoptera: Chrysomelidae) in snap beans:  Daily fluctuations in beetle counts and correlation between relative and absolute density estimates. J. Econ. Entomol. 79: 1100-1105.
• Weinzierl, R. A., R. E. Berry and G. C. Fisher. 1987. Sweep-net sampling for western spotted cucumber beetle (Coleoptera: Chrysomelidae) in snap beans:  Spatial distribution, economic injury level, and sequential sampling plans.  J. Econ. Entomol. 80: 1278-1283.
• Weinzierl, R. A., and R. P. Porter. 1990. Resistance of hairy fungus beetle (Coleoptera: Mycetophagidae) to pirimiphos methyl and malathion. J. Econ. Entomol. 83: 325-328.
• Weinzierl, R. A., C. D. Schmidt, D. B. Faulkner, G. F. Cmarik and G. D. Zinn. 1990. Chronology of permethrin resistance in a southern Illinois population of the horn fly (Diptera: Muscidae) during and after selection by pyrethroid use.  J. Econ. Entomol. 83: 690-697.
• Avancini, R.M.P., and R.A. Weinzierl. 1994.  Karyotype of the horn fly, Haematobia irritans (L.) (Diptera: Muscidae).  Cytologia 59: 269-272.
• Weinzierl, R.A. 1996.  Pesticides and food safety:  the gods' honest truth is it's not that simple.  Am. Entomol. 42: 11-13.
• Jones, C.J., and R.A. Weinzierl. 1997. Geographical and temporal variation in pteromalid (Hymenoptera: Pteromalidae) parasitism of stable fly and house fly (Diptera: Muscidae) pupae collected from cattle feedlots in Illinois.  Environ. Entomol. 26: 421-432.
• Weinzierl, R.A., and C.J. Jones. 1998.  Releases of Spalangia nigroaenea and Muscidifurax zaraptor (Hymenoptera: Pteromalidae) increase rates of parasitism and total mortality of stable fly and house fly (Diptera: Muscidae) pupae in Illinois cattle feedlots.  J. Econ. Entomol: 1114-1121.
• Kagezi, G.H., D.J. Voegtlin, and R.A. Weinzierl.  2000. The aphids (Homoptera: Aphididae) associated with bell peppers and surrounding vegetation in southern Illinois.  Great Lakes Entomol. 32 (3): 161-173. 
• Pataky, J.K., P.M. Michener, N.D. Freeman, R.A. Weinzierl, and R.H. Teyker.  2000.  Control of Stewart's wilt in sweet corn with seed treatment insecticides. Plant Disease 84: 1104-1108.
• Hobbs, H.A., D.M. Eastburn, C.J. D'Arcy, J.D. Kindhart, J.B. Masiunas, D.J. Voegtlin, R.A. Weinzierl, and N.K. McCoppin.  2000. Solanaceous weeds as possible sources of cucumber mosaic virus in southern Illinois for aphid transmission to pepper.  Plant Disease 84: 1221-1224.
• Pierce, C.M.F., L.F. Solter, and R.A. Weinzierl.  2001.  Interactions between Nosema pyrausta (Microsporidia: Nosematidae) and Bacillus thuringiensis subsp. kurstaki in the European corn borer (Lepidoptera: Pyralidae).  J. Econ. Entomol. 94: 1361-1368. 
• Ratcliffe, S.T., H.M. Robertson, C.J. Jones, G.A. Bollero, and R.A. Weinzierl. 2002.  Assessment of parasitism of house fly and stable fly (Diptera: Muscidae) pupae by pteromalid (Hymenoptera: Pteromalidae) parasitoids using a polymerase chain reaction assay.  J. Med. Entomol. 39: 52-60.
• Burkness, E.C., W.D. Hutchison, R.A. Weinzierl, J.L. Wedberg, S.J. Wold, and J.T. Shaw.  2002.  Efficacy and risk efficiency for sweet corn hybrids expressing a Bacillus thuringiensis toxin for Lepidopteran pest management in the Midwestern US.  Crop Protection 21: 157-169.
• Sheppard, C.A., and R. A. Weinzierl. 2002. Entomological lucubrations: the 19th century spirited conflict concerning the natural history of the armyworm, Pseudaletia unipuncta (Haworth) (Lepidoptera: Noctuidae).  Am. Entomol. 48 (2): 108-117.
• Ratcliffe, S.T., D.W. Webb, R.A. Weinzierl, and H.M. Robertson. 2003. PCR-RFLP identification of Diptera (Calliphoridae, Muscidae, and Sarcophagidae): a generally applicable method.  J. Forensic Science 48: 783-785.
• Cook, K.A., R.A. Weinzierl, J.K. Pataky, P.D. Esker, and F.W. Nutter, Jr. 2005. Population densities of the corn flea beetle (Coleoptera: Chrysomelidae) and incidence of Stewart's wilt in sweet corn. (J. Econ. Entomol. 98:673-682.
• Weinzierl, R.A. (In press.)  Alternatives to pyrethroids for management of Helicoverpa zea in sweet corn, seed corn, tomatoes, and peppers. Plant Health Progress.

 

Selected Bulletins, Reports, and Conference Proceedings:

Annually Revised Publications

• Weinzierl, R., and R. Cloyd. 1992-2006. Insect pest management for commercial vegetable crops. Illinois Agricultural Pest Management Handbook, University of Illinois Extension, University of Illinois, Urbana-Champaign. 34 pp.
• Weinzierl, R., M. Babadoost, and M. Kushad. 1992-2006. Illinois commercial tree fruit spray guide.   University of Illinois Extension, University of Illinois, Urbana-Champaign. 52 pp. (Editorial responsibility for this publication rotates among contributing authors.)
• Bordelon, B., M. Ellis, and R. Weinzierl. 1992-2006. Midwest commercial small fruit and grape spray guide. University of Illinois Extension, University of Illinois, Urbana-Champaign. 56 pp.  (Editorial responsibility for this publication rotates among contributing authors.)
• Egel, D., F. Lam, E. Maynard, R. Weinzierl, M. Babadoost, H. Taber, B. Hutchison, and L. Jett. 2000-2006.  Midwest Vegetable Production Guide for Commercial Growers.
• Weinzierl, R.A. 2003-2006. Insect pest management for stored grain. Illinois Agricultural Pest Management Handbook, Cooperative Extension Service, University of Illinois, Urbana-Champaign. 11 pp.

Additional Extension and Related Publications

• Weinzierl, R., and T. Henn. 1991.  Alternatives in insect management:  biological and biorational approaches.  North Central Regional Publication 401.  Cooperative Extension Service, University of Illinois, Urbana-Champaign.  73 pp.
• Weinzierl, R. 1993. Corn earworm management in seed corn. Pp. 35-41,  in: Proceedings of the Nebraska Crop Pest Management Update.  University of Nebraska, Lincoln.
• Weinzierl, R. 1995. Pesticides and food safety:  the gods' honest truth is it's not that simple. Pp. 73-78, in: 1995 Illinois Agricultural Pesticides Conference, Summaries of Presentations. Cooperative Extension Service, University of Illinois at Urbana-Champaign.
• Weinzierl, R. 1996.  The role of insect management in controlling insect-vectored diseases.  Transactions of the Illinois State Horticultural Society 129:  52-57.
• Weinzierl, R. 2002.  Understanding armyworm outbreaks: echoes from the past.  Pp. 43-48, in: Proceedings of the 2002 Illinois Crop Protection Technology Conference.    University of Illinois Extension, Urbana-Champaign.
• Weinzierl, R. 2004. Japanese beetle and multicolored Asian lady beetle in small fruits. Proceedings of the 2004 Illinois Small Fruit and Strawberry Schools.  Pp. 4-9, in: University of Illinois Extension, Urbana-Champaign.
• Weinzierl, R. 2005.  Seed treatments, aphids, viruses, and the management o of pod-infesting insects in snap beans.  Great lakes Fruit, Vegetable, and Farm Market Expo, December 7, 2005, Grand Rapids, MI.  http://www.glexpo.com/abstracts.php?ex'2053

Research Reports

• Weinzierl, R., J. Shaw, and L. Carloye. 1994. Insecticides for European corn borer control in snap beans. Pp. 43-46, in: 1994 Midwest Food Processors Association Processing Crops Manual and Proceedings, R.L. Hughes and B.A. Michaelis (eds.).  Cooperative Extension Service, University of Wisconsin, Madison.
• Shaw, J., and R. Weinzierl. 1996. Evaluation of insecticides for the control of corn earworm, European corn borer, and fall armyworm in sweet corn (1995).  Pp. 23-26, in: 1996 Midwest Food Processors Association Processing Crops Manual and Proceedings, R.L. Hughes and B.A. Michaelis (eds.).  Cooperative Extension Service, University of Wisconsin, Madison.
• Pierce, C., R. Weinzierl, and K. Steffey. 1998. First-year results of a survey for European corn borer resistance to Bacillus thuringiensis.  Pp. 67-68, in: 1998 Proceedings of the Illinois Agricultural Pesticides Conference.  University of Illinois, Urbana-Champaign.
• Weinzierl, R., W. Hutchison, J. Wedberg, and B. Flood.  1999. Results of a two-year evaluation of Bt sweet corn hybrids in Illinois, Minnesota, and Wisconsin.    Pp. 75-82, in: 1999 Midwest Food Processors Association Processing Crops Manual and Proceedings, R.L. Hughes and B.A. Michaelis (eds.).  Cooperative Extension Service, University of Wisconsin, Madison. 
• Pataky, J.K, P.M. Michener, N.D. Freeman, R.A. Weinzierl, and R.H. Teyker. 2000. Seed treatment insecticides to control Stewart's wilt on sweet corn.    Pp. 41-44, in: 2000 Midwest Food Processors Association Processing Crops Manual and Proceedings, R.L. Hughes and B.A. Michaelis (eds.).  Cooperative Extension Service, University of Wisconsin, Madison.
• Hutchison, B., E. Burkness, G. Pahl, T. Hurley, R. Weinzierl, and J. Wedberg.  2001. Risk-based methods for assessing the value of IPM technology: examples for cabbage and sweet corn.  Pp. 35-42, in: 2001 Midwest Food Processors Association Processing Crops Manual and Proceedings, R.L. Hughes and B.A. Michaelis (eds.).  Cooperative Extension Service, University of Wisconsin, Madison.
• Weinzierl, R., R. Foster, R. Bessin, C. Welty, and B. Barrett. 2004.  A five-state evaluation of reduced-risk insecticides and mating disruption for management of the codling moth in lower Midwest apple orchards.  Pp. 148-151, in: Illinois Fruit and Vegetable Research Report.  University of Illinois at Urbana-Champaign.
• Weinzierl, R. 2006. Codling moth, San Jose scale, and European red mite control evaluations in apples, 2005.  Pp. 175-177, in: Illinois Fruit and Vegetable Research Report, University of Illinois at Urbana-Champaign.

Book Chapters and Books

• Noyes, R.T., R. Weinzierl, and G.W. Cuperus. 1992.  Stored grain management techniques.  Pp. 71-79, in: Management of Grain, Bulk Commodities, and Bagged Products.  V. Krischik, G. Cuperus, and D. Galliart (eds.), Oklahoma State University, Stillwater.
• Steffey, K., M. Gray, and R. Weinzierl. 1992. Insect management. Pp. 67-74, in: Conservation Tillage Systems and Management.  Midwest Plan Services, Iowa State University, Ames.
• Weinzierl, R.A. 1994. Insects and pest management:  the impacts of human, pest, crop, and technological dynamics. Pp. 163-187, in: Sustainable Agriculture in the American Midwest: Lessons from the Past, Prospects for the Future. G. McIsaac, W. Edwards, and T. Riley (eds.), University of Illinois Press, Urbana.  
• Weinzierl, R., and T. Henn. 1994.  Beneficial insects and mites. Pp. 443-453, in: Handbook of IPM for Turf and Ornamentals.  A.R. Leslie (ed.), Lewis Publishers/CRC Press, Boca Raton, Florida.
• Weinzierl, R., and T. Henn.  1994. Botanical insecticides and insecticidal soaps.  Pp. 541-556, in: Handbook of IPM for Turf and Ornamentals.  A.R. Leslie (ed.), Lewis Publishers/CRC Press, Boca Raton, Florida.
• Noyes, R.T., R. Weinzierl, G.W. Cuperus, and D.E. Maier. 1995. Stored grain management techniques.  Pp. 71-84, in: Stored Product Management.  V. Krischik, G. Cuperus, and D. Galliart (eds.), Oklahoma State University, Stillwater.
• Flood, B., G. Hein, and R. Weinzierl.  1995.  Beans.  Pp. 41-54, in:  Vegetable Insect Management, with Emphasis on the Midwest.  R. Foster and B. Flood (eds.), Meister, Willoughby, Ohio.
• Steffey, K., M. Gray, and R. Weinzierl. 1995. Insect management.  Pp. 46-50, in: Crop Residue Management to Reduce Erosion and Improve Soil Quality. W.C. Moldenhauer and L.N. Mielke (eds.), Cons. Res. Rept. 42, USDA, Agricultural Research Service, Washington, D.C.
• Welty, C., R. Weinzierl, and H. Oloumi-Sadeghi. 1995.  Leafy greens.  Pp. 113-126, in:  Vegetable Insect Management, with Emphasis on the Midwest.  R. Foster and B. Flood (eds.), Meister, Willoughby, Ohio.
• Methven, K., M. Jeffords, R. Weinzierl, and K. McGiffen.  1995. How to Collect and Preserve Insects. Illinois Natural History Survey Publication 17.  Champaign, Illinois.  76 pp. 
• Weinzierl, R.., P. Weicherding, B. Cude, D. Williams, and D. Peterson (eds.). 1996. 57 Ways to Protect Your Home Environment (and Yourself).  Cooperative Extension Service, University of Illinois at Urbana-Champaign.  310 pp.
• Weinzierl, R.A. 1999.  Botanical insecticides, soaps, and oils.  Pp. 101-121, in:  Biological and Biotechnological Control of Insect Pests, J.E. Rechcigl and N.A. Rechcigl (eds.), Lewis Publishers, Boca Raton, Florida.

Return to previous page.