Evaluation of acetochlor-containing herbicide programs in imidazolinone- and quizalofop-resistant rice

Norsworthy, Jason K.; Fogleman, M. E.; Barber, Tom; Gbur, Edward E.

doi:10.1016/j.cropro.2019.04.025

Cited by 11 publications

(24 citation statements)

References 14 publications

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“…Hence, these bacteria may be suitable for the treatment of wastewater with high acetochlor concentrations. Acetochlor is commonly applied to maize farmland at the recommended rate of 2.2 kg/ha (Oliveira et al 2013), 1.05-1.47 kg ai/ha (Norsworthy et al 2019) or 0.52-0.98 mg/kg (Su et al 2019). Hence, the acetochlor concentration in the natural environment is relatively low.…”

Section: Characteristics Of Acetochlor Degradation By Bacillus Sp Acd-9mentioning

confidence: 99%

Degradation of acetochlor and beneficial effect of phosphate-solubilizing Bacillus sp. ACD-9 on maize seedlings

Wang

et al. 2020

3 Biotech

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The biodegradation of acetochlor in solution and soil and improvements in the growth of maize seedlings by a phosphatesolubilizing bacterial strain were investigated in this research. The strain Bacillus sp. ACD-9 optimally degraded acetochlor at pH 6.0 and 42 °C in solution. And acetochlor with an initial concentration of 30 mg/L was efficiently (> 60%) degraded by the strain after 2 days in solution. Acetochlor biodegradation and the resulting beneficial products were also identified by LC-MS, and the probable degradation products of acetochlor and two kinds of plant growth hormones, namely, 2-chloro-N-(2-methyl-6-ethylphenyl) acetamide (CMEPA), indoleacetic acid (IAA), and zeatin, were detected from the fermentation broth of strain ACD-9. The effects of the strain on the growth and acetochlor accumulation of maize seedlings were also analyzed in laboratory-scale pot experiments. Inoculation of the strain in soil could significantly improve growth (> 9.4%) and phosphorus uptake (> 14.8%) and decrease the accumulation (> 70%) and toxic effects of acetochlor on seedlings. Taking the results together, strain ACD-9 may be useful in the degradation of acetochlor in soil and promotion of the growth and phosphorus uptake of maize.

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Section: Characteristics Of Acetochlor Degradation By Bacillus Sp Acd-9mentioning

confidence: 99%

Degradation of acetochlor and beneficial effect of phosphate-solubilizing Bacillus sp. ACD-9 on maize seedlings

Wang

et al. 2020

3 Biotech

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“…Con respecto a los otros herbicidas preemergentes evaluados, debido a que ninguno alcanzó 80 % de control de O. latifolia, no fueron incluidos en el experimento de tiempos de espera. El oxadiargil y el acetoclor, si bien no cumplieron con el criterio de selección establecido en este experimento, no deberían descartarse, por cuanto se han reportado resultados positivos en el control de arroz maleza (O. sativa) con estos herbicidas (Ahmed & Chauhan, 2015;Esqueda, 2000;Norsworthy et al, 2019;Ortiz & López, 2011).…”

Section: Discussionunclassified

“…Algunos herbicidas residuales no selectivos al arroz que se han utilizado para el combate de arroces maleza bajo esta estrategia son: el oxifluorfen (Arce-Cascante, 2014), pretilaclor (Chauhan et al, 2015), butacloro (Ortiz & López, 2011), acetoclor (Norsworthy et al, 2019), atrazina (Andres et al, 2012) y oxadiargil (Ahmed & Chauhan, 2015;Ortiz & López, 2011). Sin embargo, en estos estudios no se separó a O. latifolia de O. sativa, razón por la cual es necesario valorar la eficacia de herbicidas residuales para el control de O. latifolia en siembras convencionales de arroz.…”

Section: Introductionunclassified

Eficacia de herbicidas preemergentes en el control de Oryza latifolia Desv. (arroz pato)

Picado-Arroyo

Murillo

2022

Agron. Mesoam.

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Introducción. Oryza latifolia es una especie silvestre en plantaciones de arroz comercial, su control es difícil dada la poca disponibilidad de herbicidas eficaces y selectivos al arroz cultivado. Objetivo. Identificar herbicidas preemergentes para controlar O. latifolia y estimar el tiempo de espera para sembrar arroz comercial. Materiales y métodos. De abril a octubre del 2019 se realizaron dos experimentos en la Estación Experimental Agrícola Fabio Baudrit Moreno, Alajuela, Costa Rica. Se utilizaron macetas plásticas de 3 L de capacidad, llenas con suelo arcilloso. En cada maceta se sembraron treinta semillas de O. latifolia. En el primer experimento se evaluó el oxifluorfen (480, 720 y 960 g i.a. ha-1), oxadiargil (300, 400 y 500 g i.a. ha-1), pretilaclor (1000, 1500 y 2000 g i.a. ha-1), atrazina (1500, 2000 y 2500 g i.a. ha-1), acetoclor (1500, 2000 y 2500 g i.a. ha-1) y un testigo sin herbicida. En el segundo experimento se evaluaron el oxifluorfen (480 g i.a. ha-1) y la atrazina (2000 g i.a. ha-1) aplicados a las 0, 1, 2, 3 y 4 semanas antes de sembrar la variedad de arroz Palmar 18. En ambos experimentos se utilizó un diseño irrestricto al azar con cinco repeticiones. Se evaluó el control y biomasa aérea seca de O. latifolia y la variedad Palmar 18. Resultados. El oxifluorfen en las dosis evaluadas mostró la mayor eficacia con 100 % de control de O. latifolia, seguido de la atrazina a 2000 g i.a. ha-1 con 80 %; sin embargo, ambos herbicidas causaron daños de leves a moderados en la variedad de arroz cuando se aplicaron entre 0 y 4 semanas antes de la siembra. Conclusión. El oxifluorfen fue el herbicida preemergente más eficaz para el control de O. latifolia, pero no se determinó con exactitud el tiempo de espera para sembrar la variedad Palmar 18.

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“…Acetochlor, a very-long-chain fatty acid-inhibiting herbicide, is not currently labeled for use in rice; however, if registered, it could be utilized across all rice seed traits due to natural tolerance (Norsworthy et al 2019). If eventually labeled, acetochlor could be used in many rice technology systems because it does not require a specific tolerance trait by the crop.…”

Section: Quizalofop-resistant Ricementioning

confidence: 99%

Benzobicyclon for weedy rice control in quizalofop- and imidazolinone-resistant rice systems

et al. 2022

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Gowan Company recently registered benzobicyclon, a WSSA Group 27 herbicide, as a postflood option in rice. It is the first 4-hydroxyphenylpyruvate dioxygenase-inhibiting herbicide commercially available in mid-southern U.S. rice production. In 2018 and 2019, field experiments were conducted across multiple sites in Arkansas to determine if the addition of benzobicyclon to quizalofop- or imidazolinone-resistant rice herbicide programs would improve weedy rice control. Across site years, one application of quizalofop, either at the 1- or 3-leaf rice stage, followed by benzobicyclon applied postflood, provided comparable weedy rice control to two sequential applications of quizalofop, which is a standard herbicide program in quizalofop-resistant rice. Additionally, treatments containing quizalofop or quizalofop followed by benzobicyclon injured rice ≤5% at 28 d after the postflood application. Across site years, at 28 d after the postflood application of benzobicyclon, all treatments containing a full-season herbicide program followed by benzobicyclon postflood provided comparable or improved weedy rice control when compared to two sequential early postemergence applications of imazethapyr. In both experiments, rice treated with benzobicyclon yielded comparably or better than treatments containing the standard herbicide program for each system. Findings from this research suggest that the use of benzobicyclon in quizalofop- and imidazolinone-resistant rice systems could be an additional and viable weedy rice control option for rice producers.

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Evaluation of acetochlor-containing herbicide programs in imidazolinone- and quizalofop-resistant rice

Cited by 11 publications

References 14 publications

Degradation of acetochlor and beneficial effect of phosphate-solubilizing Bacillus sp. ACD-9 on maize seedlings

Degradation of acetochlor and beneficial effect of phosphate-solubilizing Bacillus sp. ACD-9 on maize seedlings

Eficacia de herbicidas preemergentes en el control de Oryza latifolia Desv. (arroz pato)

Benzobicyclon for weedy rice control in quizalofop- and imidazolinone-resistant rice systems

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