INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
There are currently
523 unique cases (species x site of action) of herbicide resistant weeds globally, with
269 species (154 dicots and 115 monocots). Weeds have evolved resistance to
21 of the 31 known herbicide sites of action and to 167 different herbicides. Herbicide resistant weeds have been reported in
99 crops in 72 countries. The website has 3244 registered users and 691 weed scientists have contributed new cases of herbicide resistant weeds. View
Recent Additions,
Site of Action Summary, or the
Herbicide Classification System.
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PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site. Citation:
Heap, I. The International Herbicide-Resistant Weed Database. Online.
. Available
www.weedscience.org
Copyright © 1993-
WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.
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