Group C1 C2/5 resistant Setaria faberi from United States, Iowa

International Survey of Herbicide-Resistant Weeds

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Sunday, December 22, 2024

GROUP C1 C2/5 RESISTANT GIANT FOXTAIL
(Setaria faberi)

PSII inhibitors - Serine 264 Binders (C1 C2/5)

United States, Iowa

INTRODUCTION		GIANT FOXTAIL
Giant Foxtail (Setaria faberi) is a monocot weed in the Poaceae family. In Iowa this weed first evolved resistance to Group C1 C2/5 herbicides in 1992 and infests Corn (maize). Group C1 C2/5 herbicides are known as PSII inhibitors - Serine 264 Binders (Inhbition of Photosynthesis at PSll - Serine 264 Binders ). Research has shown that these particular biotypes are resistant to atrazine and they may be cross-resistant to other Group C1 C2/5 herbicides. The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.

QUIK STATS (last updated Sep 15, 2000 )
Common Name	Giant Foxtail
Species	Setaria faberi
Group	PSII inhibitors - Serine 264 Binders (C1 C2/5)
Herbicides	atrazine
Location	United States, Iowa
Year	1992
Situation(s)	Corn (maize)
Contributors - (Alphabetically)	Jack Dekker (Retired), and Micheal Owen
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NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Jack Dekker (Retired)

Central Iowa

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ACADEMIC ASPECTS

Confirmation Tests

Field, and Laboratory trials comparing a known susceptible Giant Foxtail biotype with this Giant Foxtail biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.

Genetics

Genetic studies on Group C1 C2/5 resistant Giant Foxtail have not been reported to the site. There may be a note below or an article discussing the genetics of this biotype in the Fact Sheets and Other Literature

Mechanism of Resistance

The mechanism of resistance for this biotype is either unknown or has not been entered in the database. If you know anything about the mechanism of resistance for this biotype then please update the database.

Relative Fitness

There is no record of differences in fitness or competitiveness of these resistant biotypes when compared to that of normal susceptible biotypes. If you have any information pertaining to the fitness of Group C1 C2/5 resistant Giant Foxtail from Iowa please update the database.

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CONTRIBUTING WEED SCIENTISTS

JACK DEKKER (RETIRED)

Iowa State University Agronomy Dept. 6394 Grandview Road Ames, 50011, Iowa United States Email Jack Dekker (Retired)

MICHEAL OWEN

Associate Chair And Professor Iowa State University Agronomy Department 3218 Agronomy Hall Ames, 50011, Iowa United States Email Micheal Owen Web : Web Site Link

ACKNOWLEDGEMENTS
The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Iowa have been instrumental in providing you this information. Particular thanks is given to Jack Dekker (Retired), and Micheal Owen for providing detailed information.

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Herbicide Resistant Giant Foxtail Globally
(Setaria faberi)

Country

FirstYear

Situation

Active Ingredients

Site of Action

Canada (Ontario)

2003

Soybean

imazethapyr

Inhibition of Acetolactate Synthase (B/2)

Spain

1987

Corn (maize)

atrazine

PSII inhibitors - Serine 264 Binders (C1 C2/5)

United States (Maryland)

1984

Corn (maize), and Cropland

atrazine

PSII inhibitors - Serine 264 Binders (C1 C2/5)

United States (Wisconsin)

1991

Carrots, Corn (maize), Onions, and Sweet corn

fluazifop-butyl, and sethoxydim

Inhibition of Acetyl CoA Carboxylase (A/1)

United States (Iowa)

1992

Corn (maize)

atrazine

PSII inhibitors - Serine 264 Binders (C1 C2/5)

United States (Iowa)

1994

Soybean

clethodim, fenoxaprop-ethyl, fluazifop-butyl, quizalofop-ethyl, and sethoxydim

Inhibition of Acetyl CoA Carboxylase (A/1)

United States (Minnesota)

1996

Corn (maize), and Soybean

imazethapyr, nicosulfuron, and primisulfuron-methyl

Inhibition of Acetolactate Synthase (B/2)

United States (Illinois)

1998

Soybean

clethodim, and fluazifop-butyl

Inhibition of Acetyl CoA Carboxylase (A/1)

United States (Wisconsin)

1999

Corn (maize), and Soybean

imazethapyr, and nicosulfuron

Inhibition of Acetolactate Synthase (B/2)

United States (Pennsylvania)

2004

Corn (maize)

foramsulfuron, imazamox, and nicosulfuron

Inhibition of Acetolactate Synthase (B/2)

United States (Indiana)

2004

Corn (maize)

nicosulfuron, and rimsulfuron

Inhibition of Acetolactate Synthase (B/2)

United States (Michigan)

2006

Corn (maize), and Soybean

foramsulfuron, imazethapyr, and nicosulfuron

Inhibition of Acetolactate Synthase (B/2)

United States (Illinois)

2007

Corn (maize), and Soybean

imazethapyr, and nicosulfuron

Inhibition of Acetolactate Synthase (B/2)

Literature about Similar Cases

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Abit, M. J. M. ; Al-Khatib, K. ; Olson, B. L. ; Stahlman, P. W. ; Geier, P. W. ; Thompson, C. R. ; Currie, R. S. ; Schlegel, A. J. ; Holman, J. D. ; Hudson, K. A. ; Shoup, D. E. ; Moechnig, M. J. ; Grichar, W. J. ; Bean, B. W.. 2011. Efficacy of postemergence herbicides tankmixes in aryloxyphenoxypropionate-resistant grain sorghum. Crop Protection 30 : 1623 - 1628.

The development of aryloxyphenoxypropionate (APP)-resistant grain sorghum could provide additional opportunities for postemergence herbicide grass control in grain sorghum. Field experiments were conducted in Texas (Bushland, and Yoakum), Kansas (Dodge City, Garden City, Hays, Manhattan, Colby, Ottawa, and Tribune), and South Dakota (Highmore) to evaluate the efficacy of quizalofop tank mixes in APP-resistant grain sorghum. Quizalofop was applied alone or in combination with dicamba, 2,4-D, prosulfuron, 2,4-D+metsulfuron methyl, or halosulfuron methyl+dicamba. Herbicides were applied when sorghum was 12-50 cm in height. Overall weed control was greater when quizalofop was applied with other herbicides than when applied alone. At 2 and 4 weeks after treatment (WAT), large crabgrass [Digitaria sanguinalis (L.) Scop.], giant foxtail (Setaria faberi Herrm.), and green foxtail [Setaria viridis (L.) Beauv.] control were greater than 90% when quizalofop was applied alone or in combination with dicamba, halosulfuron methyl+dicamba, or prosulfuron. Palmer amaranth (Amaranthus palmeri S. Wats.), puncturevine (Tribulus terrestris L.), and tumble pigweed (Amaranthus albus L.) control were greater than 90% in all treatments except when quizalofop was applied alone. Herbicide treatments, except those that included 2,4-D, caused slight to no sorghum injury. Grain sorghum yield was greater for all herbicide treatments compared to the weedy check. This research showed that application of quizalofop in combination with broadleaf weed herbicides provided excellent weed control in sorghum..

Calha, Im; Rocha, F; Ruiz-Santaella, Jr; Cruz-Hipolito, He. 2008. Two decades of herbicide resistance in the Iberian Peninsula. Journal Of Plant Diseases And Protection : 79 - 84.

About 20 years ago the first case of herbicide resistance in the Iberian Peninsula was reported: Amaranthus spp. R to atrazine in Spanish orchards. Since then, herbicide resistance has evolved in many weed species. Changes on agricultural practices namely new tillage systems, new rotational programmes, combined with the increased use of herbicides led to the selection of weed biotypes resistant to a wide range of herbicides. Nowadays such a problem affects the most important crops of this Peninsula (maize, wheat, rice, citrus and olive orchards), a spectrum of 26 weed species (14 dicotyledonous and 12 monocotyledonous) with biotypes resistant to several herbicides, namely to ALS inhibitors (Alisma plantago-aquatica, Cyperus difformis, Conyza albida, Aster squamatus, Avena sterilis and Papaver rhoeas), to ACCase inhibitors (Lolium rigidum), to PS II inhibitors (Amaranthus albus, A. blitoides, A. cruentus, A. hybridus, A. retroflexus, Bromus tectorum, Chenopodium album, Conyza bonariensis, C. canadensis, Echinochloa crus-galli, Polygonum lapathifolium, Setaria faberi, S. glauca, S. verticillata, S. viridis and Solanum nigrum), to ureas and amides (B. tectorum and Alopecurus myosuroides), to synthetic auxins (E. crus-galli) and more recently to the herbicide glyphosate (C. bonariensis; L. rigidum and L. multiflorum). Diversity of resistance mechanisms responsible for resistance in this Region involved target site resistance, enhanced rates of herbicide metabolism and multiple resistance. This paper reviews the actual situation in Iberian Peninsula and gives a perspective of adequate strategies for weed management considering the resistance mechanism, the availability of alternative herbicides and other cultural practices.

Richardson, R. J. ; Zandstra, B. H.. 2006. Evaluation of flumioxazin and other herbicides for weed control in gladiolus. Weed Technology 20 : 394 - 398.

Two studies were conducted near Bronson, Michigan, USA, to determine gladiolus (Gladiolus sp.) tolerance and weed control with flumioxazin and other herbicide treatments. The first study was conducted in 2002, 2003 and 2004 to evaluate weed control and gladiolus injury with flumioxazin and 14 other pre-emergence treatments. Crop injury over the 3-year period was less than 6% and was considered commercially acceptable with flumioxazin, linuron, oryzalin, pendimethalin, prometryn, S-metolachlor and sulfentrazone. Gladiolus stand count, height, and flower count were similar to those of the nontreated control with these treatments. Clomazone, halosulfuron, imazamox, imazapic, mesotrione, oxyfluorfen, rimsulfuron, and trifloxysulfuron resulted in unacceptable crop injury. Of the acceptable treatments, only flumioxazin controlled (at least 68%) common ragweed (Ambrosia artemisiifolia), yellow nutsedge (Cyperus esculentus) and foxtail species (Setaria faberi and S. viridis var. robusta-purpurea). The second study was conducted in 2003 and 2004. Flumioxazin was evaluated at 4 rates, in mixtures with S-metolachlor and oryzalin, and in comparison with isoxaben plus oryzalin. Gladiolus injury did not exceed 6%. Common ragweed, annual grass (Digitaria sanguinalis and Eragrostis cilianensis), and yellow nutsedge control were at least 63% with all flumioxazin treatments..

Zuver, K. A. ; Bernards, M. L. ; Kells, J. J. ; Sprague, C. L. ; Medlin, C. R. ; Loux, M. M.. 2006. Evaluation of postemergence weed control strategies in herbicide-resistant isolines of corn (Zea mays). Weed Technology 20 : 172 - 178.

Herbicide-resistant maize hybrids offer additional options for postemergence (POST) weed control in maize, and growers may benefit from information on the consistency of these weed control strategies. Studies were conducted in Indiana, Illinois, Michigan, and Ohio, USA, in 2000 and 2001, to evaluate weed control among herbicide strategies for imidazolinone-resistant, glufosinate-resistant, glyphosate-resistant, and conventional maize. Isogenic hybrids were utilized to minimize variation in growth and yield potential among hybrids. The glyphosate-resistant maize postemergence (glyphosate-POST) treatment provided more consistent control of giant foxtail (Setaria faberi) than the PRE, conventional maize postemergence (conventional-POST), glufosinate-resistant maize postemergence (glufosinate-POST), and imidazolinone-resistant maize postemergence (imi-POST) treatments. All four POST treatments were more consistent and provided greater control than the PRE treatment of the large-seeded broadleaf weeds such as velvetleaf (Abutilon theophrasti), giant ragweed (Ambrosia trifida), common cocklebur (Xanthium strumarium), and morningglory species (Ipomoea spp.). Conventional-POST and imi-POST were more consistent than glufosinate-POST and glyphosate-POST treatments in controlling giant ragweed. There were no statistical differences in the variability of PRE or POST treatments for control of common lambsquarters (Chenopodium album), common ragweed (Ambrosia artemisiifolia), and redroot pigweed (Amaranthus retroflexus). Maize yield varied among locations and years. The glyphosate-POST treatment did not reduce yield relative to the weed-free treatment, the imi-POST and glufosinate-POST treatments each reduced yield in one of eight locations, and the conventional-POST treatment reduced yield in three of eight locations..

Richardson, R. J. ; Wilson, H. P. ; Armel, G. R. ; Hines, T. E.. 2005. Responses of imidazolinone-resistant corn, several weeds, and two rotational crops to trifloxysulfuron. Weed Technology 19 : 744 - 748.

Field and greenhouse studies were conducted in Virginia, USA, in 2000, 2001, and 2002 to evaluate the response of imidazolinone-resistant (IR) maize and selected weeds to trifloxysulfuron applied postemergence (POST). Treatments included a nontreated control and S-metolachlor applied preemergence at 1075 g/ha followed by (fb) trifloxysulfuron POST at 0, 3.8, 7.5, 11.2, and 15 g/ha. IR maize visible injury was less than 6% from field applications of trifloxysulfuron. Visual symptoms were transient, and IR maize yield was not affected by trifloxysulfuron. Common ragweed (Ambrosia artemisiifolia), common lambsquarters (Chenopodium album), annual grass species (giant foxtail (Setaria faberi) and large crabgrass (Digitaria sanguinalis)), and carpetweed ( Mollugo verticillata) were controlled by at least 95% by S-metolachlor fb trifloxysulfuron applications. Morningglory species (ivyleaf morningglory (Ipomoea hederacea [Pharbitis hederacea]), pitted morningglory (Ipomoea lacunosa), and tall morningglory (Ipomoea purpurea [Pharbitis purpurea])) were controlled by at least 97% in 2000 and greater than 77% in 2001 from S-metolachlor fb trifloxysulfuron. Jimsonweed (Datura stramonium) was not adequately controlled. S-metolachlor alone controlled annual grass species 90% but did not control the broadleaf weeds that were present. Wheat was planted following IR maize harvest, and non-IR maize was planted the following spring. No visible response was observed to rotational wheat or non-IR maize crops. Rotational non-IR maize yield was not affected by trifloxysulfuron and was not different from the yield of maize treated with S-metolachlor alone. In greenhouse studies, IR maize was injured 10% at 10 days after treatment with 380 g/ha trifloxysulfuron POST, but recovery was rapid. Based upon results, trifloxysulfuron may be used as an herbicide in IR maize, and rotational wheat and non-IR maize may be planted at normal intervals after cotton harvest..

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