Rice Cultivar Response to Penoxsulam

Bond, Jason A.; Walker, T. W.; Webster, Eric P.; Buehring, Normie W.; Harrell, Dustin L.

doi:10.1614/wt-07-003.1

Cited by 28 publications

(24 citation statements)

References 15 publications

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“…The mean phyto-toxicity scoring on rice at 7, 14, 21 and 28 days after application herbicides revealed that application of penoxsulam 21.7% SC at applied doses did not produce any phytotoxic symptoms such as chlorosis or epinasty or leaf tip burning on rice crop and herbicide was found completely safe for use in transplanted rice. The findings were in close conformity with the findings of Mubeen et al (2014) Mishra et al (2004, Bond et al 2007 andPal et al (2009).…”

Section: Phytotoxicity Effect On Ricesupporting

confidence: 92%

Penoxsulam evaluation for weed control efficacy and increased rice yield

Saranraj¹,

Devasenapathy²,

Lokanadhan³

2017

Ind. Jour. Weed Scie.

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Field experiments were conducted for two years at wetland farm, Tamil Nadu Agricultural University, during Kharif seasons of 2014 and 2015 (June to October) to evaluate the penoxsulam (21.7% SC) for weed control in rice. Based on two years data, it was found that pre-emergence application of penoxsulam 22.5 g/ha resulted in significantly lower total weed density, weed dry weight and higher weed control efficiency at all the intervals. Application of penoxsulam could keep the weed density and dry weight below the economic threshold level and increase grain yield of 5.21 and 5.04 t/ha was obtained in 2014 and 2015, respectively. Unweeded control accounted for lower grain yield and higher weed index of 48.7 and 60.8%, respectively.

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Section: Phytotoxicity Effect On Ricesupporting

confidence: 92%

Penoxsulam evaluation for weed control efficacy and increased rice yield

Saranraj¹,

Devasenapathy²,

Lokanadhan³

2017

Ind. Jour. Weed Scie.

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“…Other inbred, medium-grain cultivars had greater tolerance, exhibiting ≤10% injury. However, research has shown that no differences in rice tolerance occurred when twice the labeled rate of penoxsulam was applied to 10 different rice cultivars (Bond et al 2007). It is unknown at this time whether hybrids and inbred conventional medium- and long-grain, drill-seeded rice cultivars common to the midsouthern United States will respond negatively to benzobicyclon applied postflood.…”

mentioning

confidence: 99%

Tolerance of Southern US Rice Cultivars to Benzobicyclon

et al. 2017

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Benzobicyclon is the first 4-hydroxyphenylpyruvate dioxygenase-inhibiting herbicide pursued for commercial registration in U.S. rice production. A study was conducted in 2015 and 2016 to evaluate the response of eight rice cultivars to post-flood application timings of benzobicyclon at 494 g ai ha-1(proposed 2X rate). ‘Caffey’, ‘CL151’, ‘CLXL745’, ‘Jupiter’, ‘LaKast’, ‘Mermentau’, ‘Roy J’, and ‘XL753’ were evaluated in response to applications of benzobicyclon. The highest level of visible injury was observed in LaKast at 7% in 2015. No visible injury was detected among other cultivars either year at 2 weeks after treatment. In 2015 and 2016, no more than a four-day delay to reach 50% heading occurred across all cultivars. Rough rice yield was not affected by any of the post-flood application timings of benzobicyclon. A second study was conducted in 2016 at three locations throughout Arkansas to investigate the tolerance of 19tropical japonica(inbred and hybrid) and twoindicainbred cultivars to a premix containing benzobicyclon at 494 g ai ha-1and halosulfuron at 72 g ai ha-1 applied 1 week after flooding. Thetropical japonicacultivars have excellent crop safety to benzobicyclon while application to theindicacultivars, Rondo and Purple Marker, expressed severe phytotoxicity. Benzobicyclon caused less than a 2 d delay in heading to thejaponicacultivars. Rough rice yield of thetropical japonicacultivars was not affected by benzobicyclon while yields of bothindicacultivars were negatively affected. Benzobicyclon can safely be applied to drill-seededtropical japonicainbred and hybrid cultivars in a post-flood application without concerns for crop injury. Benzobicyclon should not be used onindicacultivars as it will cause severe injury, delayed heading, and yield loss.

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“…Os sintomas visuais de fitotoxicidade e o prejuízo ao sistema de raízes e parte aérea das plantas algumas semanas após a aplicação foram verificados para ambos os herbicidas, por vezes afetando, outras não, alguns componentes ou a própria produtividade, mas quase sempre com forte dependência dos outros fatores relacionados, seja das doses utilizadas, épocas de aplicação, cultivares ou manejos adotados (BOND et al, 2007;CONCENÇO et al, 2007;PETTER et al, 2012;ZUFFO;PACHECO, 2011;WILLINGHAM et al, 2008). A produtividade da cultura do arroz pode ser afetada em diversos momentos, isto é, nos estádios de desenvolvimento em que cada um dos seus componentes está sendo definido; um estresse pode comprometê-lo, podendo reduzir o volume final de sementes colhido.…”

Section: Resultsunclassified

Abiotic factors in the effect of herbicides on the physiological quality of rice seeds

Venske

Schaedler

Bahry

et al. 2015

Revista Ciência Agronômica

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RESUMO -O objetivo neste trabalho foi avaliar a qualidade fisiológica de sementes de arroz em função da aplicação de herbicidas em duas épocas de semeadura e redução artificial de luz em diferentes fases do desenvolvimento da cultura. O experimento a campo, realizado na safra 2012/2013, constou de fatorial 2x3x5, sendo os fatores: época de semeadura (18/10 e 09/11); herbicida [testemunha (capinada), bispiribaque sódico e penoxsulam]; e fase do desenvolvimento da cultura sob redução de luz (testemunha; fase de plântula; período vegetativo; reprodutivo e todo o ciclo). A cultivar utilizada foi IRGA 424. Em laboratório, foi avaliado o peso de mil sementes, germinação, primeira contagem da germinação, teste de frio, condutividade elétrica e comprimento e massa da matéria seca da parte aérea e de raízes de plântulas. A semeadura mais tardia causa a produção de sementes de arroz com menor massa e qualidade fisiológica. A aplicação de bispiribaque sódico sobre o arroz semeado mais tardiamente, leva à redução do vigor das sementes produzidas. Com a redução artificial da luminosidade durante o período vegetativo, obtêm-se sementes de arroz com maior massa e qualidade fisiológica, já quando ocorre redução de luz por todo o ciclo da cultura, são produzidas sementes de pior qualidade.Palavras-chave: Temperatura. Luz. Bispiribaque sódico. Penoxsulam. Vigor de sementes.ABSTRACT -The aim of this study was to evaluate the physiological quality of rice seeds with the application of herbicides in two sowing seasons, and for the artificial reduction of lighting at different stages of crop development. The field experiment, carried out in the 2012/2013 crop year, consisted of a 2x3x5 factorial, comprising the factors: sowing season (18/10 and 09/11); herbicide [control (weeding), bispyribac-sodium and penoxsulam]; and crop development phase under light reduction (control; seedling stage, vegetative phase, reproductive phase and the entire cycle). The cultivar used was IRGA 424. The following were evaluated in the laboratory: thousand-seed weight, germination, first germination count, cold test, electrical conductivity and the length and weight of seedling shoot and root dry matter. Late sowing results in the production of rice seeds of lower weight and physiological quality. The application of sodiumbispyribac on the rice that was sown later, leads to a reduction in the vigour of the produced seeds. With reductions in artificial lighting during the vegetative phase, rice seeds with greater mass and physiological quality are obtained, whereas when the lighting is a reduced for the entire crop cycle, poor quality seeds are produced.

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Rice Cultivar Response to Penoxsulam

Cited by 28 publications

References 15 publications

Penoxsulam evaluation for weed control efficacy and increased rice yield

Penoxsulam evaluation for weed control efficacy and increased rice yield

Tolerance of Southern US Rice Cultivars to Benzobicyclon

Abiotic factors in the effect of herbicides on the physiological quality of rice seeds

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