misturas de herbicidas para o controle de plantas daninhas do gênero commelina herbicide mixtures to control weeds of the genus commelina
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ID: 128862
2002
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Abstract
Este trabalho teve como objetivo avaliar a eficiência de misturas de herbicidas no controle de duas espécies de trapoeraba, Commelina diffusa e Commelina benghalensis. Para isso, segmentos de caule dessas espécies foram transplantados em vasos contendo 12 L de substrato. Após 120 dias, foram aplicados os seguintes tratamentos: carfentrazone-ethyl (30 g ha¹) em mistura com glyphosate (720 g ha-1) e/ou glyphosate potássico (720 g ha-1); glyphosate (720 g ha-1) em mistura com flumioxazin (60 g ha-1) e/ou 2,4-D (670 g ha-1) e/ou metsulfuron methyl (4 g ha-1); oxyfluorfen em mistura com sulfentrazone (480 + 375 g ha¹); aplicações seqüenciais, com intervalo de 21 dias, de [(paraquat + diuron) / (carfentrazone-ethyl + glyphosate)] [(200+400)/(30+720)] e de [(paraquat + diuron) / (paraquat + diuron)] [(200+400)/(200+400)]; e testemunha sem aplicação de herbicida. Cada espécie constituiu um experimento, sendo ambos conduzidos no delineamento em blocos casualizados, com quatro repetições. Foram feitas avaliações de controle das trapoerabas e da biomassa fresca da parte aérea. Os tratamentos mais eficientes no controle das trapoerabas foram as aplicações seqüenciais, com intervalo de 21 dias, de (paraquat + diuron) / (carfentrazone-ethyl + glyphosate) e de (paraquat + diuron) / (paraquat + diuron), seguidas das misturas em tanque de 2,4-D + glyphosate e de carfentrazone-ethyl + glyphosate e/ou glyphosate potássico.
This research was conducted to evaluate the efficiency of herbicide mixtures in the control of two dayflower species, Commelina diffusa and Commelina benghalensis. These species were grown from stem segments in 12 L pots during 120 days. Subsequently, a randomized complete block design with four replicates was performed for each species. The treatments were carfentrazone-ethyl combined to either glyphosate or glyphosate-potassium salt (30 + 720 g ha-1); glyphosate (720 g ha-1) combined to flumioxazin (60 g ha-1), or 2.4-D (670 g ha-1) or metsulfuron methyl (4 g ha-1); oxyfluorfen combined to sulfentrazone (480 + 375 g ha-1); sequential 21 day-spaced applications of (paraquat + diuron) / (carfentrazone-ethyl + glyphosate) (200+400) /(30+720) and (paraquat + diuron) / (paraquat + diuron) (200+400) / (200+400); and no herbicide application as check control. The percentage of weed control and shoot fresh weight were evaluated. The best treatments to control both species were the sequential applications of (paraquat + diuron) / (carfentrazone-ethyl + glyphosate) and of (paraquat + diuron) / (paraquat + diuron), followed by 2.4-D + glyphosate and carfentrazone-ethyl + glyphosate or glyphosate-potassium salt mixtures.
This research was conducted to evaluate the efficiency of herbicide mixtures in the control of two dayflower species, Commelina diffusa and Commelina benghalensis. These species were grown from stem segments in 12 L pots during 120 days. Subsequently, a randomized complete block design with four replicates was performed for each species. The treatments were carfentrazone-ethyl combined to either glyphosate or glyphosate-potassium salt (30 + 720 g ha-1); glyphosate (720 g ha-1) combined to flumioxazin (60 g ha-1), or 2.4-D (670 g ha-1) or metsulfuron methyl (4 g ha-1); oxyfluorfen combined to sulfentrazone (480 + 375 g ha-1); sequential 21 day-spaced applications of (paraquat + diuron) / (carfentrazone-ethyl + glyphosate) (200+400) /(30+720) and (paraquat + diuron) / (paraquat + diuron) (200+400) / (200+400); and no herbicide application as check control. The percentage of weed control and shoot fresh weight were evaluated. The best treatments to control both species were the sequential applications of (paraquat + diuron) / (carfentrazone-ethyl + glyphosate) and of (paraquat + diuron) / (paraquat + diuron), followed by 2.4-D + glyphosate and carfentrazone-ethyl + glyphosate or glyphosate-potassium salt mixtures.
| Reference Key |
ronchi2002plantamisturas
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|---|---|
| Authors | ;C.P. Ronchi;A.A. Silva;G.V. Miranda;L.R. Ferreira;A.A. Terra |
| Journal | anti-cancer agents in medicinal chemistry |
| Year | 2002 |
| DOI |
10.1590/S0100-83582002000200018
|
| URL | |
| Keywords | Keywords not found |
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