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 Expert  712680

Expert in Pesticide Toxicology, Pesticide Chemistry

Available for your Consulting and Expert Witness Needs

Iowa (IA)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert has conducted research in pesticide toxicology and chemistry, focused primarily on insecticides, including the chlorinated hydrocarbons (such as DDT, methoxychlor, dieldrin, and heptachlor), the pyrethroids (such as pyrethrum and many synthetic pyrethroids), organophosphates, carbamates, and natural products. His work includes synthesis, insect toxicity, selectivity, mode of action studies, metabolism, and structure-activity relationships. His laboratory rears 18 species of insect pests, including flies, cockroaches, mosquitoes, grain beetles and moths, corn rootworm, cutworms, and corn borers.

Expert has conducted screening bioassays for new insecticides on over 25 species of pests. Insect problems and control strategies are studied, including insecticides, insect grow regulators, biological insecticides, natural products, repellents, and attractants.

For the past 20 years, half of Expert's research program has focused on natural insecticides. These include the monoterpenes, the flucosinolates, DIMBOA in corn, Bacillus thuringiensis, and currently several other families of natural products. His group works on their spectrum of activity, modes of action, and synthesis of derivatives and analogs. They have one patent pending in this area.

Expert has worked with approximately 15 organophosphate (OP) pesticides, investigating their fate in the environment (primarily soil) and their toxicology (mostly in insects). His research has included studies on OP transformation in insects and in soil, and the toxicity or safety of the degradation products formed. He has published about 28 scientific articles and chapters on OPs.

Over the past 26 years, Expert has taught and conducted research on insecticides at the University of Illinois, University of Guelph in Ontario, and Expert's University. He has published over 100 articles or book chapters on pesticides and trained 26 graduate students in the area. He has served as Chairman of the Agrochemicals Division of the American Chemical Society, and is a Fellow of that professional organization. Expert has received two awards from Iowa State for Research and for Applied Research, as well as one from the Entomological Society of America.

Expert has investigated monoterpenes from the oils of mint, citrus, cedar, pine, eucalyptus, and spices. He has synthesized many analogs and derivatives of monoterpenoids. Other bio pesticides that he has worked with include B.t., gluocosinolates, pyrethrins, DIMBOA, and diatomaceous earth. Recently, he wrote a review article on the risks of natural versus synthetic insecticides.


agricultural chemical environmental effect


aquatic environmental toxicity


aquatic toxicology






dichlorodiphenyltrichloroethane environmental effect




insecticide environmental effect


insecticide toxicity




methoxychlor environmental effect






pesticide biodegradation


pesticide environmental effect


pesticide testing








natural pesticide


environmental fate


environmental toxicology


organochlorine pesticide environmental effect


organophosphate pesticide


organophosphate pesticide environmental effect


agricultural pest


agricultural pesticide


soil biodegradation


biological pesticide

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Des Moines, Iowa;  Cedar Rapids, Iowa;  Waterloo, Iowa;  Iowa City, Iowa;  and Ames, Iowa.

Year   Degree   Institution  
1974   PhD   Insect Toxicology-Environmental Toxicology - University of Illinois - Urbana-Champaign  
1972   MS   Entomology - University of Illinois  
1970   BS   Zoology - Arizona State University - Tempe  

Work History:
Years   Employer   Department   Title   Responsibilities

1978 to


(Undisclosed University)




Distinguished Professor


Expert conducts research and teaching in pesticides and insecticides.

1976 to 1978


University of Guelph, Ontario


Environmental Biology


Visiting Professor


Expert conducted teaching and research in pesticides.

Career Accomplishments:

American Association for the Advancement of Science American Mosquito Control Association American Chemical Society Entomological Society of America Pesticide Science Society of Japan Society of Environmental Toxicology and Chemistry Society of Vector Ecology


Margaret Ellen White Award for Mentoring Graduate Students, Graduate College, Expert's University, Ames, IA (2015) Alumni Achievement Award, College of Liberal Arts and Sciences, University of Illinois, Urbana-Champaign, IL (2013) Charles F. Curtiss Distinguished Professor (2011-present) International Award for Research in Agrochemicals, American Chemical Society – Agrochemicals Division (2006) Outstanding Toxicology Faculty Mentor Award (2011) Fellow, Entomological Society of America (2007) Fellow, American Association for the Advancement of Science (1987) Fellow, Agrochemicals Division of American Chemical Society (1992) Research Award of Merit, Gamma Sigma Delta Honor Society of Agriculture, Expert's University (2005) Excellence in Applied Research Award, Expert's University College of Agriculture (1989) Mid-career Award for Research Achievement, Expert's University Foundation (1992) Entomology Recognition Award, North Central Branch, Entomological Society America (1996) Guest Scientist Fellowship, Federal Research Center – Jülich, in Jülich, Germany (9/97- 2/98) Newsmaker Award, American Chemical Society, Washington, DC (8/2000) Faculty Appreciation Award – ISU Entomology Graduate Student Organization (2000) Best Ecological Risk Assessment Paper (co-author) – 2001, J. Human & Ecological Risk Assessment Distinguished Alumni Seminar, Dept Entomology, Univ. Illinois, Urbana-Champaign (2002) Beta Beta Beta Biology Honorary Sigma Xi Research Honorary Society (Executive Committee at ISU) Phi Kappa Phi Honor Society (Past President of ISU Chapter) Gamma Sigma Delta Agriculture Honorary

Publications and Patents Summary

Expert is named as an inventor on 9 patents issued. He is an inventor on two additional provisional patent applications submitted in 2016. {Published over 200 scientific publications, including 11 books, 46 book chapters, 8 review articles, and over 140 peer-reviewed journal articles. Topics focus mostly on the toxicology and chemistry of insecticides as well as other pesticides and insect repellents.

Selected Publications and Publishers  
 - Rev. Environ. Contam. Toxicol.160:1-129.  
 - U.S. Patent No. 7,939,091  
 - U.S. Patent No. 6,207,705  
 - American Chemical Society, Washington, DC. DOI:10.1021/bk-2014-1172, 291 pp.  
 - American Chemical Society, Washington, D.C., 300 pp  

Consulting Services:
Selected Consulting Examples:
  • As a consultant, Expert provides technical consulting on insecticides, herbicides, fungicides. He prepares technical reports in support of litigation. He also provides depositions or expert testimony in legal cases regarding pesticides.
Recent Client Requests:
  • Expert in insecticide testing for consulting on PMRA registration of new substance in Ontario.
  • Expert for consulting on Plant p-Diclhrobenzene.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
Expert has provided pesticide expertise for approximately 25 legal cases since 1999, preparing expert reports and depositions in 8 cases.
Recent Litigation Client Requests:
  • Expert for consulting on Inquiry re expert witness For Litigaiton.
  • Expert in insecticide poisoning for consulting on accidental aerial discharge (crop-dusting) of Warrior MSDS product number A12838B.
  • pesticide contents and pesticide exposure
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
1997 to 1998   Germany   Pesticide research at the Federal Research Center - Juelich

Additional Skills and Services:
Other Skills and Services

Adjunct Faculty appointment at Texas Tech University, in The Institute for Environmental and Human Health. Member of the Scientific Advisory Panel of EcoSMART Technologies and Kittrich Corporation.


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