International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Herbicide Resistant Smallflower Umbrella Sedge Globally
(Cyperus difformis)
Herbicide Resistant Smallflower Umbrella Sedge Globally
(Cyperus difformis)
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Herbicide Resistant Smallflower Umbrella Sedge Globally
(Cyperus difformis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (New South Wales ) AustraliaNew South Wales 1994 Rice bensulfuron-methyl 1 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge6
2 BrazilBrazil 2000 Rice cyclosulfamuron, and pyrazosulfuron-ethyl 5 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge5118
3 GreeceGreece 2009 Rice azimsulfuron, and halosulfuron-methyl 19 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge13051
4 ItalyItaly 1999 Rice azimsulfuron, bensulfuron-methyl, and cinosulfuron 24 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge5155
5 South KoreaSouth Korea 2002 Rice azimsulfuron, bensulfuron-methyl, cinosulfuron, cyclosulfamuron, ethoxysulfuron, halosulfuron-methyl, imazosulfuron, and pyrazosulfuron-ethyl 27 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge152
6 SpainSpain 2000 Rice bensulfuron-methyl, and penoxsulam 38 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge5140
7 TurkeyTurkey 2010 Rice azimsulfuron, bensulfuron-methyl, bispyribac-sodium, and penoxsulam 71 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge5532
8 United States (California) United StatesCalifornia1993 Rice bensulfuron-methyl 45 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge391
9 United States (Arkansas) United StatesArkansas2010 Rice halosulfuron-methyl 45 ALS inhibitors (B/2)
71Cyperus difformisSmallflower Umbrella Sedge5562
10 United States (California) United StatesCalifornia2013 Rice propanil 45 PSII inhibitor (Ureas and amides) (C2/7)
71Cyperus difformisSmallflower Umbrella Sedge6739
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, November 25, 2017 .  Available  www.weedscience.org
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