International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
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Herbicide Resistant Weeds in Costa Rica
Herbicide Resistant Weeds in Costa Rica
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Herbicide Resistant Weeds in Costa Rica
#SpeciesCommon NameFirst YearSite of Action
1 Echinochloa colonaJunglericeCosta Rica 198711 PSII inhibitor (Ureas and amides) (C2/7)
 		72
2 Ixophorus unisetusPasto Honduras (Mexicangrass)Costa Rica 198811 ALS inhibitors (B/2)
 		74
3 Eleusine indicaGoosegrassCosta Rica 198911 ALS inhibitors (B/2)
 		73
4 Echinochloa colonaJunglericeCosta Rica 199411 ACCase inhibitors (A/1)
 		75
5 Echinochloa colonaJunglericeCosta Rica 199811 Multiple Resistance: 3 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
PSII inhibitor (Ureas and amides) (C2/7)
 		5147
6 Eleusine indicaGoosegrassCosta Rica 201011 EPSP synthase inhibitors (G/9)
 		7884
7 Oryza sativa var. sylvaticaRed RiceCosta Rica 201011 ALS inhibitors (B/2)
 		7885
8 Paspalum paniculatumArrocilloCosta Rica 201011 EPSP synthase inhibitors (G/9)
 		17101
9 Echinochloa colonaJunglericeCosta Rica 201311 Multiple Resistance: 2 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
 		7886
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, July 20, 2019 .  Available  www.weedscience.org
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