INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
select
Weeds Resistant to Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
by species and country
Weeds Resistant to Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
by species and country
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Weeds Resistant to Inhibition of Cellulose Synthesis HRAC Group 29 (Legacy L)
by species and country
#SpeciesCountryFirst Year
1 Echinochloa colona
Junglerice 		2011 - United States (Arkansas) *Multiple - 3 SOA's
2016 - Colombia *Multiple - 3 SOA's
 		201178Echinochloa colonaJunglericeL1929Inhibition of Cellulose Synthesis
2 Echinochloa crus-galli var. crus-galli
Barnyardgrass 		2011 - United States (Mississippi) *Multiple - 4 SOA's
2015 - Brazil *Multiple - 3 SOA's
2017 - Viet Nam *Multiple - 2 SOA's
2018 - Brazil *Multiple - 3 SOA's
2021 - Thailand
201179Echinochloa crus-galli var. crus-galliBarnyardgrassL1929Inhibition of Cellulose Synthesis
3 Echinochloa erecta
Pollacci Barnyardgrass 		2004 - Italy *Multiple - 2 SOA's
 		2004236Echinochloa erectaPollacci BarnyardgrassL1929Inhibition of Cellulose Synthesis
4 Poa annua
Annual Bluegrass 		2017 - United States (Tennessee) *Multiple - 7 SOA's
2022 - United States (Georgia)
2025 - United States (Oregon)
2017130Poa annuaAnnual BluegrassL1929Inhibition of Cellulose Synthesis
HRAC Global Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Thursday, September 24, 2026.  Available at  www.weedscience.org

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