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| Menezes,Valmir Gaedke; Mariot,Carlos Henrique Paim; Kalsing,Augusto; Freitas,Thais Fernanda Stella de; Grohs,Daniel Santos; Matzenbacher,Felipe de Oliveira. |
| O objetivo do presente trabalho foi o de avaliar os efeitos da utilização de glyphosate e herbicidas imidazolinonas, em aplicações isoladas ou associadas, sobre o controle de arroz-vermelho (Oryza sativa) e produtividade de grãos de arroz Clearfield®. O experimento foi conduzido a campo na safra 2007/08, em Cachoeirinha, RS, Brasil, com delineamento em blocos ao acaso e tratamentos dispostos em arranjo fatorial (2x6), usando-se quatro repetições. O fator A constou de dois níveis do herbicida glyphosate, aplicados no subperíodo semeadura-emergência da cultura por ocasião do início da emissão do coleóptilo do arroz (ponto de agulha); o fator B constou de seis tratamentos com imazethapyr+imazapic, aplicados em associação ao glyphosate ou quando a cultura... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Coleóptilo; Ponto de agulha; Imazethapyr; Manejo integrado. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001200006 |
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| Kalsing,Augusto; Tronquini,Sérgio Mateus; Mariot,Carlos Henrique Paim; Rubin,Rogerio da Silva; Bundt,Angela Da Cas; Fadin,Dauri Aparecido; Marques,Luiz Henrique. |
| ABSTRACT: Cyhalofop-butyl stands out among the herbicides in the control of imidazolinone-resistant Echinochloa species; but, rice farmers are not always satisfied with the control achieved with this herbicide. The objectives were to evaluate in regional scale the susceptibility of Echinochloa populations to cyhalofop-butyl, and quantify the effect of the weed phenology on its efficacy of control. For this, three trials were carried out under greenhouse conditions with a fully random design, using Echinochloa populations collected in rice fields in the southern region of Brazil. In two trials, the susceptibility level of 156 (2012/13 growth season) and 103 (2013/14 growth season) populations were evaluated with the application of cyhalofop-butyl at 360g... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Barnyardgrass; Development stage; Imidazolinones; Echinochloa crus-galli; Echinochloa colona. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000400153 |
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| Kalsing,Augusto; Goulart,Ives Clayton Gomes dos Reis; Mariot,Carlos Henrique Paim; Menezes,Valmir Gaedke; Matzenbacher,Felipe de Oliveira; Merotto Junior,Aldo. |
| Abstract: The objective of this work was to evaluate the distribution of imidazolinone-resistant (IMI-R) red rice (Oryza sativa) populations, the frequency of alleles conferring resistance to IMI, and the adoption of agronomic practices applied to red rice control, across growing seasons and production regions of the state of Rio Grande do Sul (RS), Brazil. In the experiment, 1,008 red rice populations were screened for resistance to IMI, 760 IMI-R red rice plants were genotyped for the acetolactate synthase (ALS) alleles conferring resistance to IMI, and 40 'Clearfield' rice growers were surveyed. IMI-R red rice populations were widespread throughout RS since the 2006/2007 growing season, with a higher initial frequency in the Depressão Central and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Gene flow; Herbicide resistance; Weedy rice. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102503 |
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