Weed management with CGA-362622 in transgenic and nontransgenic cotton

Porterfield, Dunk; Wilcut, John W.; Wells, Jerry W.; Clewis, Scott B.

doi:10.1614/p2002-014

Cited by 28 publications

(43 citation statements)

References 34 publications

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“…Prickly sida was controlled 93 to 99% with either glyphosate formulation, with no difference in control between formulations ( Table 2). As reported by other researchers (Porterfield et al 2002a(Porterfield et al , 2003, our data also indicate that trifloxysulfuron did not control prickly sida. As expected, prickly sida control with either glyphosate formulation was not improved by the addition of trifloxysulfuron.…”

Section: Resultssupporting

confidence: 87%

“…In contrast, trifloxysulfuron injured cotton 7 to 24%, depending on location. This level of injury to cotton in North Carolina and Virginia is not uncommon (Crooks et al 2003;Porterfield et al 2003;Richardson et al 2004aRichardson et al , 2004b. Injury was visually apparent as a chlorosis, discoloration of treated cotton foliage (7 to 18%), and stunting (2 to 6%) (data not shown).…”

Section: Resultsmentioning

confidence: 91%

“…Currently, the trifloxysulfuron registration does not allow tank mixtures with any other herbicides (Anonymous 2004b). Only limited research has been published to date on trifloxysulfuron applied in mixture with glyphosate on GR cotton (Porterfield et al 2003;Richardson et al 2004b).…”

Section: Introductionmentioning

confidence: 99%

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Glyphosate-Resistant Cotton (Gossypium hirsutum) Response and Weed Management with Trifloxysulfuron, Glyphosate, Prometryn, and MSMA

et al. 2006

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Field studies were conducted at three locations to evaluate glyphosate-resistant (GR) cotton response, weed control, and cotton lint yields to two formulations of glyphosate (diammonium salt– glyphosate and isopropylamine salt–glyphosate) and trifloxysulfuron applied early postemergence (EPOST) alone or to tank mixtures of trifloxysulfuron with each glyphosate formulation, with and without a late postemergence-directed (LAYBY) treatment of prometryn plus MSMA. Trifloxysulfuron and both formulations of glyphosate controlled common lambsquarters and pitted morningglory. Both glyphosate formulations provided equivalent control of common lambsquarters, goosegrass, pitted morningglory, prickly sida, and smooth pigweed. Trifloxysulfuron controlled smooth pigweed better than either glyphosate formulation but did not control goosegrass or prickly sida. Prometryn plus MSMA LAYBY improved late-season control of common lambsquarters, goosegrass, large crabgrass, and pitted morningglory for all EPOST systems and improved late-season smooth pigweed control for EPOST systems that did not include trifloxysulfuron. Cotton injury was 2% or less from both glyphosate formulations, while trifloxysulfuron injured ‘Deltapine 5415RR’ 7 to 16% at two locations. At a third location, trifloxysulfuron injured ‘Paymaster 1218RR/BG’ 24%, and when applied in mixture with either glyphosate formulation, injury increased to at least 72%. Cotton injury was transient at the first two locations and was not visually apparent 3 to 5 wk later. Cotton yield at the third location was reduced. High cotton yields reflected high levels of weed control.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 91%

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Glyphosate-Resistant Cotton (Gossypium hirsutum) Response and Weed Management with Trifloxysulfuron, Glyphosate, Prometryn, and MSMA

et al. 2006

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“…The main effect of trifloxysulfuron rate was not significant (P 5 0.0575), and trifloxysulfuron at the higher rate reduced Palmer amaranth fresh weight only 25%. Trifloxysulfuron is typically effective on Palmer amaranth (Branson et al 2005;Porterfield et al 2003), but the populations used in this experiment were likely resistant to ALS-inhibiting herbicides, such as trifloxysulfuron. Earlier research has shown that trifloxysulfuron was not effective in controlling GR and GS Palmer amaranth accessions from Arkansas when applied at manufacturer's suggested field rate (Norsworthy et al 2008).…”

Section: Experiments 2 Efficacy Of Herbicides Against Palmermentioning

confidence: 99%

Interference and Control of Glyphosate-Resistant and -Susceptible Palmer Amaranth (Amaranthus palmeri) Populations under Greenhouse Conditions

et al. 2013

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Interference for 40 d after emergence (DAE) of corn, cotton, peanut, and snap bean by four glyphosate-resistant (GR) and four glyphosate-susceptible (GS) Palmer amaranth populations from Georgia and North Carolina was compared in the greenhouse. Greater interference from Palmer amaranth, measured as crop height and fresh weight reduction, was noted in cotton and peanut compared with corn or snap bean. Crop height 15 to 40 DAE was reduced similarly by GR and GS populations. Crop fresh weight, however, was reduced 25 and 19% in the presence of GS and GR populations, respectively. Measured as percent reduction in fresh weight, GR and GS populations of Palmer amaranth were controlled similarly by glufosinate, lactofen, paraquat, and trifloxysulfuron applied POST. Atrazine and dicamba controlled GR populations more effectively than GS populations.

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“…Reconhecendo-se o potencial de prejuízo à cultura do algodoeiro, atualmente espécies de Amaranthus são consideradas problema em campos de produção de algodão no Paquistão (Bukun, 2005), na Austrália (Walker et al, 2005) e nos Estados Unidos (Troxler et al, 2002;Porterfield et al, 2003;Murdock et al, 2004;Richardson et al, 2007). No Brasil, estas espécies ocorrem em todos os Estados, com maior concentração em regiões agrícolas (Kissmann e Groth, 1999).…”

Section: Introductionunclassified

Curvas de dose-resposta e eficácia de herbicidas inibidores da enzima ALS aplicados em pré-emergência sobre espécies de Amaranthus

Francischini

Oliveira²,

Constantin³

et al. 2013

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Resumo -Plantas daninhas do gênero Amaranthus podem causar grandes perdas de produtividade nas culturas de interesse econômico se não controladas corretamente, entre elas as do algodoeiro. Para que isso não aconteça é necessario a correta identificação das espécies, além da adequação de herbicidas e doses a serem utilizadas. Assim, o objetivo deste trabalho foi desenvolver as curvas de dose-resposta de herbicidas inibidores da enzima ALS (trifloxysulfuronsodium e pyrithiobac-sodium) aplicados em pré-emergência, afim de verificar a eficácia de controle sobre espécies de Amaranthus (A. hybridus, A. viridis, A. lividus e A. deflexus) e a diferença de suscetibilidade entre elas. Para cada herbicida foram conduzidos experimentos isolados, onde as doses utilizadas em g ha -1 foram: 0,0; 1,8; 3,7; 7,5; 15,0 e 30,0 para trifloxysulfuron-sodium e 0; 35; 70; 140; 280 e 560 para pyrithiobac-sodium, equivalentes a 0, ¼, ½, 1, 2 e 4 vezes a dose comercial recomendada para solos de textura franco-argilosa. Os resultados indicaram que as doses utilizadas nas curvas de dose-respostas de trifloxysulfuronsodium e pyrithiobac-sodium proporcionaram controles acima de 80% para todas as espécies de Amaranthus, caracterizando a possibilidade de utilização dos herbicidas em aplicações em pré-emergência. Houve diferença de suscetibilidade entre as espécies de Amaranthus, sendo A. hybridus e A. lividus as mais suscetíveis a ambos herbicidas. Palavras-chaves: trifloxysulfuron-sodium, pyrithiobac-sodium, suscetibilidade Abstract -Weeds from Amaranthus genus may cause major yield losses in economic crops, including cotton, if not controlled properly. In order to avoid it, it's necessary correct species identification, besides herbicides suitability and recommended doses. The aim of this study was to develop the dose-response curve of ALS enzyme inhibitors herbicides (trifloxysulfuronsodium and pyrithiobac-sodium) applied in pre emergence conditions becoming possible to verify the control effectiveness over four important species of Amaranthus (A. hybridus, A. viridis, A. lividus and A. deflexus) as well as the difference in susceptibility between them. For each herbicide, isolated experiments were carried out and studied doses were: 0; 1.8; 3.7; 7.5; 15.0 and 30.0 for trifloxysulfuron-sodium and 0; 35; 70; 140; 280 e 560 for pyrithiobac-sodium, equivalent to 0, ¼, ½, 1, 2 and 4 times recommended rate for clay loam soils. Results indicated that used doses to obtain dose-response curve of trifloxysulfuron-sodium and pyrithiobac-sodium 1 Recebido para publicação em

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Weed management with CGA-362622 in transgenic and nontransgenic cotton

Cited by 28 publications

References 34 publications

Glyphosate-Resistant Cotton (Gossypium hirsutum) Response and Weed Management with Trifloxysulfuron, Glyphosate, Prometryn, and MSMA

Glyphosate-Resistant Cotton (Gossypium hirsutum) Response and Weed Management with Trifloxysulfuron, Glyphosate, Prometryn, and MSMA

Interference and Control of Glyphosate-Resistant and -Susceptible Palmer Amaranth (Amaranthus palmeri) Populations under Greenhouse Conditions

Curvas de dose-resposta e eficácia de herbicidas inibidores da enzima ALS aplicados em pré-emergência sobre espécies de Amaranthus

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