INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
©2026 WeedScience.org, Dr. Ian Heap 09/25/2026PLEASE NOTEThe 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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Heap, I. The International Herbicide-Resistant Weed Database. Online.
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