International Survey of Herbicide-Resistant Weeds

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Status of Herbicide Resistance in Czech Republic - Josef Soukup : January, 2014

Absolute number of resistant weed species in the Czech list is relatively high (16) but majority of species are those resistant to PS II inhibitors, especially triazines which were used historically in orchards, maize and on railways in seventies and eighties in the last century. The status of resistance in listed populations has not been revised since the year of publication. We assume that the resistance is disappearing because triazines and other PS II inhibitors (except for terbuthylazine) are no longer used in these crops.

Herbicide Resistant Weeds in Czech Republic
Herbicide Resistant Weeds in Czech Republic
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Herbicide Resistant Weeds in Czech Republic
#SpeciesCommon NameFirst YearSite of Action
1 Polygonum lapathifoliumPale SmartweedCzech Republic 198212 PSII inhibitors - Serine 264 Binders (C1 C2/5)
80
2 Amaranthus retroflexusRedroot PigweedCzech Republic 198512 PSII inhibitors - Serine 264 Binders (C1 C2/5)
77
3 Chenopodium albumCommon LambsquartersCzech Republic 198612 PSII inhibitors - Serine 264 Binders (C1 C2/5)
81
4 Conyza canadensisHorseweedCzech Republic 198712 PSII inhibitors - Serine 264 Binders (C1 C2/5)
83
5 Senecio vulgarisCommon GroundselCzech Republic 198812 PSII inhibitors - Serine 264 Binders (C1 C2/5)
84
6 Poa annuaAnnual BluegrassCzech Republic 198812 PSII inhibitors - Serine 264 Binders (C1 C2/5)
85
7 Amaranthus powelliiPowell AmaranthCzech Republic 198912 PSII inhibitors - Serine 264 Binders (C1 C2/5)
78
8 Chenopodium album var. striatum (=C. strictum var. glaucophyllum)Lateflowering GoosefootCzech Republic 198912 PSII inhibitors - Serine 264 Binders (C1 C2/5)
79
9 Polygonum persicariaLadysthumbCzech Republic 198912 PSII inhibitors - Serine 264 Binders (C1 C2/5)
82
10 Echinochloa crus-galli var. crus-galliBarnyardgrassCzech Republic 199412 PSII inhibitors - Serine 264 Binders (C1 C2/5)
5052
11 Kochia scopariaKochiaCzech Republic 199612 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/5)
5050
12 Solanum nigrumBlack NightshadeCzech Republic 199912 PSII inhibitors - Serine 264 Binders (C1 C2/5)
5051
13 Digitaria sanguinalisLarge CrabgrassCzech Republic 200512 PSII inhibitors - Serine 264 Binders (C1 C2/5)
5263
14 Apera spica-ventiSilky WindgrassCzech Republic 200512 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase (B/2)
PSII inhibitors - Serine 264 Binders (C1 C2/7)
5266
15 Conyza canadensisHorseweedCzech Republic 200712 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase (G/9)
5317
16 Alopecurus myosuroidesBlackgrassCzech Republic 200812 Inhibition of Acetolactate Synthase (B/2)
7871
17 Bromus sterilisPoverty BromeCzech Republic 201712 Inhibition of Acetolactate Synthase (B/2)
18211
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Thursday, October 21, 2021 .  Available  www.weedscience.org
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