Selectivity of Saflufenacil Applied Singly and in Combination With Glyphosate on Coffee and Citrus Crops

Gonçalves, Clebson Gomes; Silva, Antonio Carlos da; Pereira, María Renata Rocha; Marchi, Sidnei Roberto de; Martins, D.

doi:10.1590/1983-21252016v29n106rc

Cited by 10 publications

(9 citation statements)

References 22 publications

(22 reference statements)

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“…Saflufenacil has presented excellent effectiveness in controlling eudicot weeds; it may be used in combination with other herbicides, without affecting its effectiveness in controlling weeds and selectivity (Eubank et al, 2013;Gonçalves et al, 2016). It may be another tool for the management of weeds in aquatic environments.…”

Section: Resultsmentioning

confidence: 99%

Período de chuva após a aplicação de saflufenacil no controle de macrófitas aquáticas flutuantes

2016

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O herbicida saflufenacil pode ser uma alternativa a mais para o controle de plantas daninhas de ambiente aquático, porém no momento ou após a aplicação do herbicida algumas intempéries, como a chuva, podem inviabilizar o controle químico de espécies problemáticas que ocorrem neste ambiente. Com isso, o objetivo deste trabalho foi avaliar a ocorrência de diferentes períodos de chuva após a aplicação do herbicida saflufenacil no controle de aguapé e alface d'água. O estudo foi instalado em vasos plásticos com capacidade de 2,5 litros de água e mantidos em casa de vegetação. O delineamento experimental utilizado foi o inteiramente casualizado com nove tratamentos e quatro repetições. Os tratamentos constaram da simulação de chuva realizada através de um pulverizado estacionário em períodos após a aplicação do herbicida: 0; 0,25; 0,5; 1; 2; 4; 6; e 12 horas, além do período sem chuva. O saflufenacil foi aplicado na dosagem de 33,6 g ha-1 e foram realizadas avaliações aos 7, 14, 21, 28 e 35 dias após a aplicação do herbicida. Constatou-se que a ocorrência de chuva em intervalos superiores a duas horas após a aplicação do saflufenacil não alterou a eficiência no aguapé. Já para as plantas de alface d'água o controle foi eficiente com um tempo mínimo de quatro horas para a ocorrência de chuva após a aplicação deste herbicida. Finalmente, para todas as plantas, períodos iguais ou maiores que seis horas após a aplicação do saflufenacil proporcionam controle total das plantas de aguapé e alface d'água.

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Section: Resultsmentioning

confidence: 99%

Período de chuva após a aplicação de saflufenacil no controle de macrófitas aquáticas flutuantes

2016

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“…As they are young plants, the initial development stage, contributed to the resultsof the applications of saflufenacil alone and in association. Considering that plants with 2 -6 pairs of leaves are more sensitive to PPO-inhibiting herbicides, due to the greater leaf wetness and greater penetration due to the lower deposition of cuticular wax (Carvalho;Netto, 2016;Gonçalves;Carvalho, 2017). According to Oliveira Junior (2011); Silva et al (2017a), plants considered tolerant to PPO inhibitors, can present injuries, from moderate to severe, and that drift with small drops cause the appearance of small white spots on the leaves after application in post-emergence.…”

Section: Phytotoxicity Assessmentmentioning

confidence: 99%

“…Some PPO-inhibiting herbicides, alone and in association, can cause damage such as reduced growth in young coffee trees (Carvalho et al, 2014;Silva et al, 2017a). Gonçalves et al (2016) showed the selective potential of saflufenacil alone and in association with glyphosate when applied to the ground.However, the heterogeneity and the difficulty in controlling the weed species found in coffee farming drive the need for selectivity research on more herbicide molecules and associations between them. Thus, the objective of this work was to evaluate the symptoms of phytotocity and the leaf anatomical characteristics of young coffee plants submitted to the application of herbicides isolated and in associations.…”

Section: Introductionmentioning

confidence: 99%

Phytotoxicity and leaf anatomy of young coffee plants subjected to herbicides exclusively and in associations

almeida

Gonçalves

Netto

et al. 2020

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The lack of work force and the damage that weeds can cause to coffee plants are the causes of the growing demand for selective herbicides to be used in coffee farming. Thus, the objective of this study was to evaluate the phytotoxicity symptoms and leaf anatomical characteristics of young coffee plants submitted to application isolated herbicides and also in associations. An experiment was carried out in a protected environment in randomized blocks: four replicates with coffee seedlings (Coffea arabica L.) cultivar "Topázio MG-1190", grown in pots with a capacity of 11 liters of substrate. The herbicides applied, in isolation, were: pyrazosulfuron-ethyl (0.015 kg ha-1), saflufenacil (0.049 kg ha-1), imazetaphyr (0.1 kg ha-1), iodosulfuron-methyl (0.0035 kg ha-1), chlorimuron-ethyl (0.015 kg ha-1) and sethoxydim (0.184 kg ha-1). The latter was used in associations with the others. In addition, a control without herbicides was used. Phytotoxicity symptoms were evaluated up to 49 days after application (DAA) and anatomical characteristics at 65 DAA. Saflufenacil exclusively and inassociation with sethoxydim caused visual phytotoxicity symptoms in the leaves and negatively influence in the characteristics of the epidermis thickness of the adaxial face (EAD), thickness of the palisade parenchyma (PAP), thickness of the spongy parenchyma (SPP) and thickness of the mesophyll (MES). The other herbicides, isolated or in associations, didn't cause phytotoxicity symptoms, but had negative influence in the anatomical parameters of the leaf blade. However they did not interfere with the paradermic parameters and the vascular bundle.

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“…The use of glyphosate mixed with other herbicides has been shown to be a control strategy with a high use potential (YAMAUTI et al, 2010;MACIEL et al, 2011;STEWART et al, 2011;ALONSO et al, 2013;GONÇALVES et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Action of rain on formulations of glyphosate mixed with saflufenacil for the control of Brachiaria decumbens

et al. 2018

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RESUMO:O objetivo do trabalho foi avaliar a ocorrência de chuvas na eficiência de diferentes formulações de glyphosate aplicadas de forma isolada e em mistura com o saflufenacil, sobre o controle de Brachiaria decumbens. O estudo foi realizado no primeiro semestre de 2013. Os tratamentos constaram da aplicação isolada de três formulações de glyphosate (Roundup Original, Roundup Transorb R e Roundup WG) a 1.080 g e.a. ha -1 e em mistura com o saflufenacil a 24,5 g i.a. ha -1 + Dash a 0,5% v/v e, seis intervalos de tempo para simulação da chuva: 15; 30; 60; 120; 240 e 360 minutos após a aplicação dos herbicidas e uma testemunha sem chuva. Foram realizadas avaliações visuais de controle das plantas aos 4; 7; 14; 21 e 28 dias após a aplicação dos herbicidas. A mistura de saflufenacil + Dash às formulações de Roundup original, Roundup transorb R e Roundup WG aumentaram a velocidade de controle das plantas de B. decumbens, independente do intervalo de chuva estudado. As formulações de glyphosate (Roundup Transorb R e Roundup WG) aplicados isolados foram afetadas por chuvas que ocorreram logo após a pulverização e quando em mistura com saflufenacil + Dash observou-se efeito sinérgico no controle das plantas daninhas. PALAVRAS-CHAVE:Brachiaria; eficácia; herbicida; plantas daninhas. ABSTRACT:This study aimed to evaluate the effects of rain on the efficiency of different formulations of glyphosate applied in isolation and in combination with saflufenacil on the control of Brachiaria decumbens. This study was conducted during the first half of 2013. The treatments consisted of an isolated application of three formulations of glyphosate (Roundup Original, Roundup Transorb R, and Roundup WG) at 1,080 g a.e. ha -1 and mixed with saflufenacil at 24.5 g a.e. ha -1 + Dash at 0.5% v/v at six time intervals of simulated rain: 15, 30, 60, 120, 240 and 360 minutes after application of herbicides and a control treatment without rain. We performed visual evaluations of plant control at 4, 7, 14, 21 and 28 days after application of herbicides. The mixture of saflufenacil + Dash with the original Roundup formulations, Roundup Transorb R and Roundup WG increased the control speed of B. decumbens plants regardless of the rain interval studied. The formulations of glyphosate (Roundup Transorb R and Roundup WG) applied in isolation were affected by rains that occurred shortly after spraying. In combination with saflufenacil + Dash, there was a synergistic effect on weed control.

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Selectivity of Saflufenacil Applied Singly and in Combination With Glyphosate on Coffee and Citrus Crops

Cited by 10 publications

References 22 publications

Período de chuva após a aplicação de saflufenacil no controle de macrófitas aquáticas flutuantes

Período de chuva após a aplicação de saflufenacil no controle de macrófitas aquáticas flutuantes

Phytotoxicity and leaf anatomy of young coffee plants subjected to herbicides exclusively and in associations

Action of rain on formulations of glyphosate mixed with saflufenacil for the control of Brachiaria decumbens

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