INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
             
      
                    
           
                
      
            
                
    
    
    
    
    
    
	
		
			
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                        1
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                        Amaranthus hybridus (syn: quitensis) Smooth Pigweed
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                        2004 - Canada  (Ontario)  
                     | 2004 | 12 | Amaranthus hybridus (syn: quitensis) | Smooth Pigweed | C3 | 6 | 6 | PSII inhibitors - Histidine 215 Binders
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                        2
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                        Amaranthus retroflexus Redroot Pigweed
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                        2005 - Canada  (Ontario)  
                     | 2005 | 16 | Amaranthus retroflexus | Redroot Pigweed | C3 | 6 | 6 | PSII inhibitors - Histidine 215 Binders
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                        3
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                        Cyperus difformis Smallflower Umbrella Sedge
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                        2023 - Portugal    *Multiple - 2 SOA's 
                     | 2023 | 71 | Cyperus difformis | Smallflower Umbrella Sedge | C3 | 6 | 6 | PSII inhibitors - Histidine 215 Binders
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                        4
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                        Sagittaria montevidensis California Arrowhead
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                        2009 - Brazil    *Multiple - 2 SOA's 
                     | 2009 | 146 | Sagittaria montevidensis | California Arrowhead | C3 | 6 | 6 | PSII inhibitors - Histidine 215 Binders
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                        5
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                        Senecio vulgaris Common Groundsel
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                        1995 - United States  (Oregon)  
                     | 1995 | 148 | Senecio vulgaris | Common Groundsel | C3 | 6 | 6 | PSII inhibitors - Histidine 215 Binders
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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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