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| Silva,Diecson Ruy Orsolin da; Vargas,Leandro; Agostinetto,Dirceu; Mariani,Franciele. |
| Weed competition in the soybean causes changes in morphological and physiological characteristics that reduce the competitive ability of the crop. The objective of this study was to determine the control periods and coexistence of glyphosate-resistant hairy fleabane and its interference in morphological and photosynthetic variables and RR soybean yield. A field experiment was conducted during the 2011/2012 growing season, the treatments consisted of weed interference and weed free periods of the glyphosate-resistant hairy fleabane with soybean (BRS Estância RR). The periods were 0, 7, 14, 21, 28, 35, 42 and 154 days after the soybean emergence. The results sugested no differences between the control periods for the variables evaluated. The increase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Weed interference; Photosynthesis. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000400014 |
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| Silva,Diecson Ruy Orsolin da; Avila,Luis Antonio de; Agostinetto,Dirceu; Dal Magro,Taisa; Oliveira,Ezequiel de; Zanella,Renato; Noldin,José Alberto. |
| Os agrotóxicos aplicados em lavouras de arroz irrigado podem ser transportados aos mananciais hídricos. A determinação da extensão dessa contaminação é importante para alertar a sociedade e seus governantes para esse problema. Dessa forma, o objetivo deste trabalho foi monitorar a ocorrência de agrotóxicos em águas superficiais de sete regiões do sul do Brasil associadas ao cultivo de arroz irrigado em três épocas, na safra 2007/2008. As amostras de águas superficiais foram coletadas em três locais por região, totalizando 21 locais. Os agrotóxicos avaliados foram: clomazone, quinclorac, penoxsulam, imazethapyr, imazapic, carbofuran, 3-hydroxy-carbofuran, fipronil e tebuconazole. As amostras foram analisadas por LC-MS/MS. Imazethapyr, carbofuran e fipronil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Contaminação; Dispersão de agrotóxicos; Dinâmica; Resíduos. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000900001 |
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| Silva,Diecson Ruy Orsolin da; Silva,Edson Dalla Nora da; Aguiar,Adalin Cezar Moraes de; Novello,Bruna Dal’Pizol; Silva,Álvaro André Alba da; Basso,Claudir José. |
| ABSTRACT: The introduction of dicamba and 2,4-D-resistant soybean will increase the use of auxin herbicides for management of herbicide-resistant weeds, increasing risk of drift in non-target crops. The field experiment was conducted in 2016/17 to evaluate injury, growth, yield, germination and seeds vigor of soybean effects to simulated drift of 2,4-D and dicamba applied to soybean at the V3 and R2 growth stages. To simulate drift, 2,4-D was applied at 0; 5.16; 10.4; 20.8 e 41.5g ae ha-1 and dicamba at: 0; 3.7; 7.4; 14.9 e 29.8g ae ha-1. The injury of the dicamba is greater than 2,4-D, and the V5 stage is more susceptible to both herbicides. The greatest reductions in soybean yield follow the drift of dicamba in R2 and 2,4-D in V5. The physiological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dose response; Injury; Germination; Vigor; Synthetic auxin. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000800151 |
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