Adjuvants Influenced Saflufenacil Efficacy on Fall-Emerging Weeds

Knežević, Stevan Z.; Datta, Avishek; Scott, Jon E.; Charvat, Leo D.

doi:10.1614/wt-08-174.1

Cited by 30 publications

(37 citation statements)

References 16 publications

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“…Glyphosate applied alone only provided 76% control of field pennycress (Table 3), while addition of 20 g ai/ha of saflufenacil to glyphosate improved weed control efficacy (Table 3). Similarly, others reported that 90% control of field pennycress was achieved with saflufenacil doses of 103 and 34 g ai/ha applied alone or with MSO to the 5 to 8 cm diameter rosette (15).…”

Section: Field Pennycress Controlmentioning

confidence: 95%

“…Addition of 20 g ai/ha dose of saflufenacil provided a slight improvement of control (90%) (Table 2). Knezevic et al (15) also concluded that fall applications of saflufenacil to the 5 to 8 cm tall henbit required 98 and 35 g ai/ha for saflufenacil applied alone and with MSO for obtaining 90% control.…”

Section: Henbit Controlmentioning

confidence: 99%

“…), redroot pigweed ( Amaranthus retroflexus L.), common waterhemp ( Amaranthus rudis Sauer), common ragweed ( Ambrosia artemisiifolia L.), giant ragweed ( Ambrosia trifida L.), ladysthumb ( Polygonum persicaria L.), and common lambsquarters including triazine‐ and ALS‐resistant biotypes (1,17). As a fall applied burndown herbicide, saflufenacil also effectively controlled many fall emerging broadleaf weed species including field bindweed ( Convolvulus arvensis L.), prickly lettuce, henbit, shepherd's‐purse, dandelion ( Taraxacum officinale Weber), and field pennycress in Nebraska (15). Saflufenacil can also be tank‐mixed with glyphosate for preplant burndown control of emerged weeds in reduced or no‐till corn (17).…”

Section: Introductionmentioning

confidence: 99%

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Interactions Between Saflufenacil and Glyphosate on Selected Broadleaf Weeds

Knežević¹,

Datta²,

Scott³

et al. 2009

Crop Management

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Saflufenacil (Kixor) is a new herbicide under development by BASF for preplant burndown and preemergence broadleaf weed control in field crops, including corn, soybean, sorghum, and wheat. Field experiments were conducted in 2007 and 2008 to describe dose‐response curves of saflufenacil applied alone or tank‐mixed with methylated seed oil (MSO) or glyphosate to control several broadleaf weeds in Nebraska. Dose‐response curves based on log‐logistic model were used to determine the ED90 values (effective dose that provides 90% weed control efficacy) for kochia, wild buckwheat, horseweed, henbit, field pennycress, prickly lettuce, shepherd's‐purse, field bindweed, and dandelion. In general, weed control efficacy was influenced by herbicide dose and type of tank‐mix. For most of the species tested, weed control efficacy increased when small amount of saflufenacil was added to the label dose of glyphosate. For example, 90% control of horseweed at 28 days after treatment was obtained with 217, 78, and 35 g ai/ha for saflufenacil applied alone or tank‐mixed with MSO or glyphosate, respectively. The ED90 values determined for different broadleaf weed species are within the proposed label dose for saflufenacil (e.g., 125 g ai/ha). Addition of glyphosate improved activity; however, it may not be needed unless grass and perennial weeds are target species.

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Section: Field Pennycress Controlmentioning

confidence: 95%

Section: Henbit Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interactions Between Saflufenacil and Glyphosate on Selected Broadleaf Weeds

Knežević¹,

Datta²,

Scott³

et al. 2009

Crop Management

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“…Varshney and Singh (1990) found 67% reduction in weed biomass by adding the isoctyl phenyl polyethoxy ethanol adjuvant in 33% reduced rates of terbutryn, isoproturon, methabenzthiazuron and metoxuron compared with the herbicide alone. Among different adjuvants used, Knezevic et al (2009) found the highest improvement in efficacy of saflufenacil against field bindweed in wheat by addition of methylated seed oil. There is little or no information available about the effect of the alkyl ether sulfate adjuvant when used with herbicides in wheat crop for controlling common goosefoot and field bindweed.…”

Section: Introductionmentioning

confidence: 99%

Alkyl Ether Sulfate Improves Efficacy of Herbicides Against Common Goosefoot and Field Bindweed in Wheat

et al. 2018

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-Tank mixed application of herbicides with adjuvant is required for effective weed management and to reduce herbicide load on agricultural crops. Field studies were conducted to investigate the effect of herbicides at reduced rates with adjuvant on common goosefoot (Chenopodium album) and field bindweed (Convolvulus arvensis) and grain yield of wheat for two consecutive winter seasons. Treatments included post-emergence foliar application of four herbicides viz., fluroxypyr + tribenuron-methyl + clopyralid, mesosulfuron-methyl + iodosulfuron-methyl sodium, bromoxynil + MCPA, iodosulfuron-methyl sodium (pre mixed formulations) at their recommended rates 244.5, 14.2, 444.6, 10 g a.i. ha -1 , respectively and 25% reduced rates with alkyl ether sulfate Na salt at 400 mL ha -1 as adjuvant. A weedy check was kept as control. All the herbicide treatments caused a significant reduction in densities (up to 85% and 89.2%) of C. arvensis and C. album, respectively and total dry weight (12.4-56%), N (3.7-50%), P (25-63.6%) and K (1.4-56.6%) uptakes from weedy check. Better weed control was achieved with 25% lower dose of all herbicides along with adjuvant in comparison with that recorded with their full doses without adjuvant. All herbicide treatments increased the grain yield of wheat ranging from 10.4 6-56.1% over control during both years. Herbicides with adjuvant produced significantly the higher grain yield of wheat than those observed with herbicides alone. Among all herbicide treatments, 75% doses of bromoxynil + MCPA and iodosulfuron-methyl sodium along with alkyl ether sulfate adjuvant were proved to be the best as they gave significantly the higher (4902.3 and 5159.0 kg ha -1 and 4566.5 and 4891.0 kgha -1 ) grain yields of wheat during years 2013-14 and 2014-15, respectively. (244,5; 14,2; 444,6; e 10 g i.a. ha -1 , respectivamente) (até 85% e 89,2%) de C. arvensis e C. album, respectivamente, bem como no peso seco total (12.4-56%), N (3,7-50%), P (25-63,6%) e K (1,4-56,6%) Keywords: adjuvant, grain yield, herbicides, wheat RESUMO -A aplicação de herbicidas em tanque com adjuvante é necessária para o manejo eficaz de plantas daninhas e para a redução da carga de herbicidas em culturas agrícolas. Estudos de campo foram conduzidos para investigar o efeito de herbicidas em doses reduzidas com adjuvante em ansarinha-branca (Chenopodium album) e corriola (Convolvulus arvensis) e no rendimento de grãos de trigo durante duas estações de inverno consecutivas. Os tratamentos incluíram a aplicação foliar em pós-emergência de quatro herbicidas, a saber: fluroxypyr + tribenuronmethyl + clopyralid, mesosulfuron-methyl + iodosulfuron-methyl sodium, bromoxynil + MCPA e iodosulfuron-methyl sodium, com as doses recomendadasTANVEER, A. et al. Alkyl ether sulfate improves efficacy of herbicides against common goosefoot and field bindweed in wheat 2

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“…The efficacy of herbicides can be enhanced using surfactants (Knezevic et al, 2009;Loken, HattermanValenti, 2013;Gitsopoulos et al, 2014). Enhancement of herbicidal activity by surfactants may be related to improving the dose transfer process (absorption) of active ingredient on weed leaves (McCullough, Hart, 2009).…”

Section: Introductionmentioning

confidence: 99%

The effect of cationic and nonionic surfactants on the efficacy of ALS-inhibitor herbicides against Avena sterilis

Aliverdi

Hammami

2016

Zemdirbyste-Agriculture

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A major challenge is selection of a suitable surfactant for a given herbicide. A series of dose-response experiments were conducted during 2013 at Ferdowsi University of Mashhad, Iran under greenhouse and outdoor conditions to determine whether the efficacy of four acetolactate synthase (ALS)-inhibitor herbicides on Avena sterilis could be improved by adding two surfactants at two concentrations. Both surfactants were effective at lowering the surface tension of all herbicide solutions with the nonionic surfactant being more effective than the cationic one. According to effective dose (ED)-values, the ranking of the ALS-inhibitor herbicides to control A. sterilis was: sulfosulfuron > mesosulfuron-methyl + iodosulfuron-methyl-sodium with safener mefenpyr > mesosulfuronmethyl + iodosulfuron-methyl-sodium with safener mefenpyr-diethyl > metsulfuron-methyl + sulfosulfuron. The EDs of all herbicides decreased when applied with surfactants. Cationic surfactant had a greater ability to enhance the efficacy of the tested herbicides than nonionic surfactant.

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Adjuvants Influenced Saflufenacil Efficacy on Fall-Emerging Weeds

Cited by 30 publications

References 16 publications

Interactions Between Saflufenacil and Glyphosate on Selected Broadleaf Weeds

Interactions Between Saflufenacil and Glyphosate on Selected Broadleaf Weeds

Alkyl Ether Sulfate Improves Efficacy of Herbicides Against Common Goosefoot and Field Bindweed in Wheat

The effect of cationic and nonionic surfactants on the efficacy of ALS-inhibitor herbicides against Avena sterilis

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