Application of Post-Emergence ALS Inhibitor Herbicides Associated or Not to Glyphosate in RR/STS Soybean

Silva, André Felipe Moreira; Albrecht, Alfredo Júnior Paiola; Albrecht, Leandro Paiola; Filho, Ricardo Victória; Giovanelli, Bruno Flaibam

doi:10.1590/s0100-83582016340400017

Cited by 11 publications

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References 21 publications

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“…The percentages of injury varied from 24 to 45, but in general, no reductions in yield were observed during the four years of cultivation. Silva et al (2016) found symptoms of injury of at most 5.5% for nicosulfuron application (60 g a.i. ha -1 ) in post-emergence (V4) alone or in combination with glyphosate (960 g a.e.…”

Section: (A) (B)mentioning

confidence: 99%

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Rates of Nicosulfuron Applied in Glyphosate-Tolerant and Sulfonylurea-Tolerant Soybean

et al. 2019

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STS cultivars tolerate up to four times higher rates of chlorimuron than those recommended for non-tolerant cultivars, without significant damage. However, few studies position the selectivity of nicosulfuron in STS cultivars. The aim of this study was to assess the selectivity of rates of the herbicide nicosulfuron applied in the post-emergence (V4) of RR/STS soybean. The experiments were conducted in the 2015/16 and 2016/17 seasons in Piracicaba, SP. In the 2016/17 season, the experiment was also conducted in Palotina, PR. Treatments consisted of six rates of the herbicide nicosulfuron (0, 50, 100, 150, 200, and 250 g a.i. ha-1). The experimental design was a randomized block design with four replications. The symptoms of injury were assessed at 7, 14, 21, and 28 days after application, as well as the assessment of variables related to the agronomic performance (plant height, number of pods per plant, yield, and one thousand-grain weight). The data were submitted to regression analysis (p<0.05). The estimated rates reduced yield by 5% in relation to the rate 0 and were between 57.79 and 68.37 g a.i. ha-1. In general, the RR/STS soybean is tolerant to the application of nicosulfuron up to 57.79 g a.i. ha-1 when considering the estimated rates. Therefore, the RR/STS soybean is tolerant to the application of nicosulfuron up to 50 g a.i. ha-1, according to the applied rates.

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Section: (A) (B)mentioning

confidence: 99%

“…ha -1 (Albrecht et al, 2017). According to Silva et al (2016), the application of nicosulfuron (60 g a.i. ha -1 ) caused no injury and did not affect RR/STS soybean yield.…”

Section: Introductionmentioning

confidence: 99%

Rates of Nicosulfuron Applied in Glyphosate-Tolerant and Sulfonylurea-Tolerant Soybean

et al. 2019

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“…ha -1 ) and glyphosate (960 g a.e. ha -1 ), without crop injury and reductions in variables related to agronomic performance (SILVA et al, 2016). Table 6.…”

Section: Discussionmentioning

confidence: 99%

Herbicide management in glyphosate and sulfonylurea-tolerant soybeans

et al. 2020

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There is little information on the efficacy and selectivity of sulfonylureas, isolated and in association with glyphosate, in glyphosate and sulfonylurea-tolerant soybeans. Thus, the present study aims to evaluate the efficacy of weed control and selectivity of sulfonylureas, isolated and in association with glyphosate, at post-emergence (V4) of RR2/STS soybean. The experiments were conducted in the in areas located in Piracicaba City, São Paulo State (SP), Brazil (experiment I) and Palotina City, Paraná State (PR), Brazil (experiment II). Treatments were composed of application of the herbicides sulfometuron, chlorimuron, halosulfuron, ethoxysulfuron and glyphosate, isolated and in association, in the BMX Garra RR2/STS cultivar. Experiment I was conducted focusing on the evaluation of the efficacy of weed control; whereas experiment II focused mainly on the evaluation of herbicide selectivity. The experimental design was the randomized complete block, with four replications. Crop injury, weed control, and variables related to agronomic performance were evaluated. Data were submitted to analysis of variance, and the means of the treatments were compared with the Tukey test. Sulfonylureas in association with glyphosate were effective in weed control and selective for the BMX Garra RR2/STS soybean cultivar. The sulfometuron + chlorimuron + glyphosate association presented phytotoxic potential for the BMX Garra RR2/STS cultivar.

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“…: chlorimuron-ethyl) e das sulfonanilidas (ex. : cloransulam) são seletivos para a soja em pós-emergência (SILVA et al, 2016). Em áreas que ocorrem simultaneamente plantas daninhas poáceas e eudicotiledôneas, a mistura de herbicidas apresenta vantagens sobre o ponto de vista operacional.…”

Section: Introductionunclassified

Viabilidade Técnica E Econômica Da Adição De Inibidores Da Accase E Da Als Ao Glyphosate No Controle De Plantas Daninhas E No Rendimento De Grãos Da Soja

et al. 2019

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O uso contínuo de glyphosate no cultivo da soja tem propiciado o aparecimento de plantas daninhas resistentes. Assim, buscam-se alternativas de manejo, como a utilização de produtos com diferentes mecanismos de ação. Neste trabalho, o objetivo foi avaliar a eficiência da aplicação em pós-emergência de herbicidas com diferentes mecanismos de ação no controle de plantas daninhas na cultura da soja. O experimento foi conduzido na safra 2016/2017, em Cambé-PR, em blocos casualizados, com quatro repetições. Foram avaliados os tratamentos glyphosate; glyphosate + haloxifop com sequencial de chlorimuron -ethyl; glyphosate + clethodim com sequencial de cloransulam; testemunha capinada; testemunha infestada. O uso exclusivo de glyphosate não apresentou controle eficiente das plantas daninhas encontradas. As espécies Digitaria insularis (Capim-amargoso), Commelina virginica (Trapoeraba) e Digitaria horizontalis (Capim-colchão) foram eficientemente controladas pelos tratamentos glyphosate + haloxifop com sequencial de chlorimuron-ethyl e glyphosate + clethodim com sequencial de cloransulam. Todavia, as espécies Conyza bonariensis (Buva) e Ipomoea purpurea (Corda-de-viola) foram eficientemente controladas apenas pelo tratamento testemunha capinada. A produtividade da soja foi maior nos tratamentos glyphosate + haloxifop com sequencial de chlorimuron-ethyl e glyphosate + clethodim com sequencial de cloransulam, com média de 4.600 kg ha-1. Os tratamentos glyphosate e testemunha infestada apresentaram a menor massa de mil grãos e o menor rendimento de grãos. A maior receita líquida foi obtida pelos tratamentos glyphosate + haloxifop com sequencial de chlorimuron-ethyl e glyphosate + clethodim com sequencial de cloransulam. Dessa forma, a aplicação de herbicidas com diferentes mecanismos de ação (inibidor da EPSPs, inibidor de ACCase e inibidor de ALS) melhorou o controle das plantas daninhas, o rendimento de grãos da soja e a lucratividade da lavoura em comparação à aplicação isolada de glyphosate e à capina manual.

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Application of Post-Emergence ALS Inhibitor Herbicides Associated or Not to Glyphosate in RR/STS Soybean

Cited by 11 publications

References 21 publications

Rates of Nicosulfuron Applied in Glyphosate-Tolerant and Sulfonylurea-Tolerant Soybean

Rates of Nicosulfuron Applied in Glyphosate-Tolerant and Sulfonylurea-Tolerant Soybean

Herbicide management in glyphosate and sulfonylurea-tolerant soybeans

Viabilidade Técnica E Econômica Da Adição De Inibidores Da Accase E Da Als Ao Glyphosate No Controle De Plantas Daninhas E No Rendimento De Grãos Da Soja

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