Tolerância de cultivares de soja aos herbicidas imazaquin, diclosulam e sulfentrazone, aplicados em solo de textura arenosa

Barros, Antônio Carlos Souza Albuquerque; Monteiro, P. M. F. de O.; Furtado, Xavier C.; Silva, José Nunes da; Guerzoni, R. A.

doi:10.7824/rbh.v4i1.5

Cited by 6 publications

(9 citation statements)

References 2 publications

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“…These results corroborate those obtained by Brighenti et al (2002) and Barros et al (2005), who found no effect of imazaquin herbicide on soybean genotypes when the recommended dose (160 g ha -1 ) was used. A significant effect on plant height was observed, but only on cover plants, especially C. spectabilis, which displayed the highest values, regardless of evaluation period.…”

Section: Resultssupporting

confidence: 82%

Volunteer RR® corn management in roundup ready® soybean-corn succession system

et al. 2015

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-The present study evaluated the effects of cover crops (Pennisetum glaucum, Crotalaria spectabilis and Urochloa ruziziensis) associated with the application of herbicides {glyphosate; (glyphosate + haloxyfop-R); (glyphosate + fluazifop-p-butyl); (glyphosate + imazethapyr) and (glyphosate + imazaquin)} in soybean desiccation management for volunteer RR® corn control. The experiment was conducted under field conditions at Sinop-MT, during the 2013/2014 crop season, in a randomized complete blocks design with factorial scheme and four replications. The following parameter were evaluated: dry matter of cover crops and ground coverage rate, control of volunteer RR ® corn present at the time of desiccation, dry matter, height and intoxication level on soybean plants caused by herbicides at 7, 14 and 28 days after emergence (DAE), control of volunteer RR ® corn derived from emergence fluxes subsequent to desiccation management and soybean yield. The joint application of (glyphosate + haloxyfop-R) provided the best level of volunteer RR ® corn control present at the time of desiccation. Satisfactory control (80%) of volunteer corn was obtained with the application of (glyphosate + imazethapyr). This treatment displayed an additional residual effect of imazethapyr, which efficiently controled volunteer RR ® corn derived from fluxes subsequent to desiccation management, especially in treatments performed under U. ruziziensis straw. None of the herbicides used in desiccation management caused any significant effect on dry matter, height and phytotoxicity of soybean plants at 7, 14 and 28 DAE nor on grain yield.

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Section: Resultssupporting

confidence: 82%

Volunteer RR® corn management in roundup ready® soybean-corn succession system

et al. 2015

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“…It is known the differential selectivity of sulfentrazone to soybean cultivars (Swantek, Sneller;Oliver, 1998;Barros et al, 2005). The Brazilian company COODETEC released soybean cultivars with greater tolerance to sulfonylurea.…”

Section: Resultsmentioning

confidence: 99%

“…The differential tolerance to herbicides among cultivars has been the subject of study for several crop species (Barros et al, 2005, Fontana et al, 2007Souza et al, 2009;Zera et al, 2011;Silva et al 2011). It is known the differential selectivity of sulfentrazone to soybean cultivars (Swantek, Sneller;Oliver, 1998;Barros et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

Tolerance of dry bean cultivars to saflufenacil

et al. 2014

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The herbicide saflufenacil is a Protox inhibitor, with differential translocation mode in comparison to other herbicides with the same mechanism of action. Selectivity, efficacy and safety to the environment are important characteristics for practical application of a herbicide in agriculture. The aim of this study was to determine the tolerance of ten dry bean cultivars to saflufenacil, applied on preemergence. The experiment was conducted in split plot randomized blocks design with ten dry bean cultivars (IAPAR 81; IPR Tiziu, IPR Corujinha; BRS Estilo; BRS Talismã; BRS Esplendor; BRS Campeiro; BRS Radiante, BRS Vereda and Jalo Precoce) allocated in plots and saflufenacil concentrations (0, 14.7 and 29.4 g ha -1 ) in subplots. Evaluations were performed at 21 and 28 days after application (DAA) and plant height at 28 and 35 DAA. At physiological maturity were evaluated plant height, first pod height , number of pods per plant, 400 grains weight and dry beans grain yield. The cultivar Talismã showed low sensitivity to the herbicide and the cultivar Jalo Precoce high sensitivity to the herbicide, considering all variables analyzed.Index terms: Selectivity, Protox inhibitor, Phaseolus vulgaris. RESUMOO herbicida saflufenacil é inibidor da Protox, com modo de translocação diferenciado em relação a outros herbicidas pertencentes ao mesmo mecanismo de ação. Seletividade, eficácia e segurança ao ambiente são características importantes para aplicabilidade prática de um herbicida na agricultura. O objetivo deste estudo foi determinar a tolerância de dez cultivares de feijão ao saflufenacil, aplicado em condições de pré-emergência. O experimento foi realizado em delineamento experimental de blocos ao acaso com parcelas subdivididas com dez cultivares de feijão (IAPAR 81; IPR Tiziu; IPR Corujinha; BRS Estilo; BRS Talismã; BRS Esplendor; BRS Campeiro; BRS Radiante; BRS Vereda e Jalo precoce) alocadas nas parcelas e concentrações de saflufenacil (0; 14,7 e 29,4 g ha -1 ) nas subparcelas. Foram realizadas avaliações de estande aos 21 e 28 dias após aplicação (DAA) e estatura de plantas aos 28 e 35 DAA. Na maturação fisiológica avaliou-se estatura da planta, altura inserção da primeira vagem, número de vagens por planta, peso de 400 grãos e rendimento de grãos de feijão. A cultivar Talismã apresentou baixa sensibilidade ao herbicida e a cultivar Jalo Precoce elevada sensibilidade ao herbicida, considerando-se todas as variáveis analisadas.Termos para indexação: Seletividade, inibidor da Protox, Phaseolus vulgaris.

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“…Contudo, Barros et al (2005) relataram que o ingrediente imazaquin não reflete perda no rendimento quando aplicado na dose de registro, mesmo com índices elevados de O uso de latifolicidas como o chlorimuron-ethyl, associado ao glyphosate causam sintomas fitotóxicos leves sobre a soja, porém não reduzem a massa seca, altura, nem a produtividade da soja (Procópio et al, 2007).…”

Section: Resultsunclassified

“…Quanto aos herbicidas inibidores de PPO, Barros et al (2005), relatam que sulfentrazone na dose de 300 g ha -1 de i.a. causam fitotoxicidade praticável para a cultura da soja.…”

Section: Resultsunclassified

Herbicidas pré-emergentes para manejo de milho voluntário RR® na cultura da soja

Scherer

Spatt²,

Pedrollo³

et al. 2017

RBHerbicidas

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Resumo - Abstract -Alternatives for volunteer corn RR® management need further knowledge in the product scope with residual effect, mainly for use in pre-emergence of the soybean RR ® . This paper evaluated the performance of residual herbicides to control this species, when applied in soybean using the method "plant-apply". The experiment was carried in the municipality of Santa Maria/RS, crop season 2015/16; evaluating herbicides applied in pre-emergence of soybean crop and corn RR ® . The experimental design was randomized blocks with eight treatments and four replications were evaluated inhibition of emergence of corn plants and injury on emerged plants. Sequential application responses were also addressed. Herbicides tested: flumioxazin, chlorimuron-ethyl, imazaquin, and sulfentrazone; as associations these herbicides with flumioxazin, in sequential applications, reporting if there were synergistic effects. The best control of RR ® volunteer corn was obtained with the imazaquin herbicide, which reduced the emergence of RR ® corn plants by 90% and injured 97.5% of those that emerged. However, imazaquin caused symptoms of 1 Recebido para publicação em

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Tolerância de cultivares de soja aos herbicidas imazaquin, diclosulam e sulfentrazone, aplicados em solo de textura arenosa

Cited by 6 publications

References 2 publications

Volunteer RR® corn management in roundup ready® soybean-corn succession system

Volunteer RR® corn management in roundup ready® soybean-corn succession system

Tolerance of dry bean cultivars to saflufenacil

Herbicidas pré-emergentes para manejo de milho voluntário RR® na cultura da soja

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