INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE

PLEASE NOTE
The graph does not necessarily plot multiple resistance in the same individual plant.
Resistance to different SOA's may be found in separate populations, even in separate countries,
this chart presents the cumulative number of SOA's recorded globally for a species.

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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. Tuesday, August 4, 2020 . Available www.weedscience.org Copyright © 1993- 2020 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.