Pesticide Broadcast

Stephen J. Toth, Jr., Pest Management Information Specialist
Wayne G. Buhler, Pesticide Education Specialist

Volume 12, Number 2, May 6, 2002


Catalog of Herbicide Resistance

It's no secret that weeds around the world have begun developing resistance to herbicides. To help answer the questions about which species, in what locations, and to which herbicides, an international group of weed scientists undertook an ambitious project of producing an International Survey of Herbicide Resistant Weeds and arranging the results on a lively and informative website. The data -- 258 biotypes, 156 species (94 dicots and 62 monocots), and more than 210,000 fields -- can be checked by user-friendly methods (nomenclature, both common and scientific, location, or herbicide mode of action). The data tables are easily read and informative. Other features on the site include recent publications on the topic, plus links and access to other materials. The collaborative project was organized by I. Heap, P.O. Box 1365, Corvallis, OR 97339, USA, e-mail: IanHeap@WeedSmart.com, in tandem with several committees and the Weed Science Society of America, and drew upon information from scientists in more than 80 countries.

Source: IPMnet News, Issue Number 101, May 2002


Recommendations for the use of chemicals are included in this publication as a covenience to the reader. The use of brand names and any mention or listing of commercial products or services in this publication does not imply endorsement by the North Carolina Cooperative Extension Service nor discrimination against similar products or services not mentioned. Individuals who use chemicals are responsible for ensuring that the intended use complies with current regulations and conforms to the product label. Be sure to obtain current information about usage and examine a current product label before applying any chemical. For assistance, contact an agent of the North Carolina Cooperative Extension Service in your county.

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Last modified on May 6, 2002 by Stephen J. Toth, Jr.

North Carolina State University North Carolina Cooperative Extension Service College of Agriculture and Life Sciences Department of Entomology Department of Horticultural Science