Intellex Acquires Expert by Big Village

We're thrilled to announce that Intellex has acquired Expert by Big Village, effective March 22, 2024. This strategic move enhances our capabilities and strengthens our commitment to delivering exceptional solutions to our customers.

Stay tuned for more updates on how this acquisition will benefit our clients and experts.

For inquiries or more information, please contact us at


Expert Details

Weed Science, Poisonous Plants, Invasive Plants

ID: 730640 California, USA

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I work in the area of weed control of invasive plants, as well as weed identification and poisonous plants. I have published four books, three on weed identification and one on weed control of invasive plants. I have also published over 130 other peer-reviewed papers on other aspects of weed science, including herbicide mode of action and weed control techniques.

Was on Advisory Board for Mendel Biotechnology, who was developing biofuel energy plants.


Year Degree Subject Institution
Year: 1986 Degree: PhD Subject: Weed Science Institution: University of California, Davis, Botany
Year: 1981 Degree: MS Subject: Plant Taxonomy Institution: Humboldt State University
Year: 1977 Degree: BS Subject: Fish and Wildlife Biology Institution: University of California, Davis

Work History

Years Employer Title Department
Years: 1995 to 2012 Employer: University of California Title: Cooperative Extension Specialist Department: Plant Sciences
I conduct outreach education programs on the management of invasive species and conduct research on the biology, ecology and management of invasive plants of natural areas.
Years Employer Title Department
Years: 1987 to 1994 Employer: Cornell University Title: Professor Department: Soil, Crop and Atmospheric Sciences
Taught all the Weed Science courses and conducted research on the physiology of herbicide action in plants.

Career Accomplishments

Associations / Societies
President of three societies, including California Invasive Plant Council, Western Society of Weed Science, and the Weed Science Society of America (will be president in 2014).
Licenses / Certifications
Qualified Applicators Certificate for applying herbicides
Professional Appointments
Appointed by the US Secretary of the Interior to serve on the National Invasive Species Advisory Committee in 2008 and 2011. Also appointed by the California Secretary of Agriculture to serve on the California Invasive Species Council in 2010.
Awards / Recognition
Was selected as a Fellow of the Weed Science Society of America. Won Outstanding Extension Award by the Weed Science Society of America. Won Outstanding Weed Scientists by the Western Society of Weed Science, won the Lifetime Achievement Award from the California Invasive Plant Council.
Publications and Patents Summary
have over 135 peer-reviewed manuscripts, 200 other extension publications and 4 books on weed science.

Additional Experience

Expert Witness Experience
Expert has been involved in a number of cases as an expert witness, and have taken the stand on three occasions, including one in Federal Court. Have been deposed about 6 times.
Training / Seminars
I have developed over 50 courses, symposia, short courses, etc on aspects related to Weed Science.
Marketing Experience
I work quite often with the chemical industry, particularly companies that develop herbicides, primarily Dow AgroSciences, Dupont, BASF, Monsanto.

Fields of Expertise

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