International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Weeds Resistant to PSII inhibitors (Nitriles) (C3/6)
by species and country
Weeds Resistant to PSII inhibitors (Nitriles) (C3/6)
by species and country
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Weeds Resistant to PSII inhibitors (Nitriles) (C3/6)
by species and country
#SpeciesCountryFirst Year
1 Amaranthus hybridus (syn: quitensis)
Smooth Pigweed
2004 - Canada (Ontario)
200412Amaranthus hybridus (syn: quitensis)Smooth PigweedC366PSII inhibitors (Nitriles)
2 Amaranthus retroflexus
Redroot Pigweed
2005 - Canada (Ontario)
200516Amaranthus retroflexusRedroot PigweedC366PSII inhibitors (Nitriles)
3 Sagittaria montevidensis
California Arrowhead
2009 - Brazil *Multiple - 2 SOA's
2009146Sagittaria montevidensisCalifornia ArrowheadC366PSII inhibitors (Nitriles)
4 Senecio vulgaris
Common Groundsel
1995 - United States (Oregon)
1995148Senecio vulgarisCommon GroundselC366PSII inhibitors (Nitriles)
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Tuesday, July 25, 2017 .  Available  www.weedscience.org
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