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| Registros recuperados: 14 | |
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| MARCHEZAN,M.G.; AVILA,L.A.; SCHAEDLER,C.E.; AMARANTE,L.; SCHERNER,A.; SCHREIBER,F.. |
| ABSTRACT: The maximum biological efficiency of a herbicide is performed when the plants are in favorable condition to absorb and metabolize it. Stress situations, such as total submersion, cause stress in plants, reducing weed control efficiency and crop yield. The objective of this study was to verify whether different soil water content and herbicide treatments alter the components of the secondary metabolism and cause cellular damage in weed species Two experiments were conducted (I and II) in a completely randomized experimental design with a factorial scheme (2 x 2 x 4 and 2 x 5, respectively) and three replicates. The first experiment was conducted with two species (Leersia hexandra and Luziola peruviana), which were submitted to four herbicide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Luziola peruviana; Leersia hexandra; Echinochloa crus-galli; Oxidative stress; Chemical control. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100288 |
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| Grisi,P.U.; Gualtieri,S.C.J.; Ranal,M.A.; Santana,D.G.. |
| O objetivo deste estudo foi avaliar o potencial alelopático do extrato aquoso de frutos de Sapindus saponaria (sabão-de-soldado) na germinação de diásporos e na morfologia de plântulas de Lactuca sativa (alface), Allium cepa (cebola), Echinochloa crus-galli (capim-arroz) e Ipomoea grandifolia (corda-de-viola). O extrato aquoso dos frutos foi preparado na proporção de 100 g de material vegetal fresco para 1.000 mL de água destilada, produzindo-se a concentração de 10%. A partir dele, foram feitas diluições em água destilada para 7,5, 5,0 e 2,5%. O extrato do fruto Sapindus saponaria evidenciou potencialidades alelopáticas tanto sobre as espécies de hortaliças quanto sobre as de plantas daninhas. O efeito inibitório sobre o processo de germinação dos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alelopatia; Allium cepa; Echinochloa crus-galli; Ipomoea grandifolia; Lactuca sativa; Sabão-de-soldado. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000200009 |
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| EBERHARDT,D.S.; OLIVEIRA NETO,A.M.; NOLDIN,J.A.; VANTI,R.M.. |
| ABSTRACT The objective of this research was to confirm the resistance of a barnyardgrass biotype (Echinochloa crus-galli) to herbicides quinclorac (synthetic auxin), penoxsulam (ALS inhibitor) and cyhalofop-butyl (ACCase inhibitor). Two experiments were carried out in a greenhouse located in Itajaí, State of Santa Catarina, Brazil. One experiment evaluating the biotype ECH 18 (known as susceptible) and one with the ECH 141 biotype (suspected to be multiple resistant). The experimental design used was completely randomized, in a 4 x 7 factorial arrangement with four replications. The first factor was the herbicide: cyhalofop-butyl (Clincher(r)), penoxsulam (Ricer(r)), quinclorac (Facet(r)) and propanil (Grassaid(r)) and the second factor consisting of seven... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Paddy rice; Echinochloa crus-galli; Chemical control; Herbicide resistance. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400823 |
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| Bolaños-Jiménez,Jovany; Uscanga-Mortera,Ebandro; Tafoya-Razo,J. Antonio; Kohashi-Shibata,Josué; Torres-García,Jesús R.. |
| Resumen En Guanajuato, Echinochloa crus-galli es la principal maleza en el trigo y se controla con herbicidas inhibidores de la acetil coenzima A carboxilasa (ACCasa) y la acetolactato sintetasa (ALS), pero se ha observado un control deficiente. El objetivo de esta investigación fue determinar la efectividad biológica de los herbicidas usados en el trigo y la presencia de resistencia en E. crus-galli. El experimento se realizó en dos fases: 1) efectividad biológica y, 2) presencia de resistencia. Para evaluar efectividad biológica, en seis biotipos (un bioensayo por biotipo) se aplicaron clodinafop propargil y pinoxaden, inhibidores de la ACCasa, y flucarbazone sódico y mesosulfuron metil+iodosulfuron metil, inhibidores de la ALS, en dosis de 60, 55, 28 y... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Echinochloa crus-galli; Control-químico; Efectividad; Resistencia; Dosis-respuesta. |
| Ano: 2018 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952018000500713 |
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| Bastiani,Marlon Ouriques; Lamego,Fabiane Pinto; Agostinetto,Dirceu; Langaro,Ana Claudia; Silva,Diônvera Coelho da. |
| ABSTRACT The aim of this work was to evaluate the competitiveness between soybean cultivars and barnyardgrass, based on morphological and physiological characteristics of species. The experiments were conducted in completely randomized experimental design, with 4 replications. In the first study, for both soybean and barnyardgrass, it was determined the population of plants in which shoot dry matter became constant and independent of the population (16 plants∙pot−1 or 400 plants∙m−2). In the second study, 2 experiments were conducted to evaluate the competitiveness of BMX Apolo RR and BMX Potência RR soybean cultivars with barnyardgrass plants, both carried out in replacement series under different proportions of plants∙pot−1 (100:0; 75:25; 50:50; 25:75... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Echinochloa crus-galli; Lowlands; Replacement series; Competition. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000400435 |
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| Aminpanah,Hashem; Sharifi,Peyman; Firouzi,Saeed. |
| The aim of this study was to evaluate the relative competitive ability of barnyardgrass (BYG, Echinochloa crus-galli (L.) P. Beauv.) compared to rice barnyardgrass (ECPH, E. oryzicola (Vasinger) Vasinger) against rice (Oryza sativa L.) cv. Hashemi in a replacement series study. Experiment was arranged in randomized complete block design with three replicates using a factorial treatment arrangement. Factors were two species of Echinochloa genus (BYG and ECPH) and five rice:BYG or rice:ECPH mixture proportions (8:0, 6:2, 4:4, 2:6, and 0:8). Relative yield total of aboveground dry weight, root dry weight and leaf area indicated that BYG or ECPH were competing for the same resources with 'Hashemi'. In general, replacement series curves and relative crowding... |
| Tipo: Journal article |
Palavras-chave: Echinochloa crus-galli; Competitiveness; Interference; Oryza sativa; Echinochloa oryzicola. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300010 |
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| Kogan,Marcelo; Gómez,Patricio; Fischer,Albert; Alister,Claudio. |
| The continuously-flooded rice production system in Chile has selected highly competitive aquatic weeds selection capable ofreducing paddy yields by 25 to 50%. Penoxsulam is a broad-spectrum triazolopyrimidine (ALS inhibitor) commercially introduced in Chile in 2006, where Alisma plantago aquatica hads already evolved resistance to sulfonylurea herbicides (SU). Several field trials with water seeded rice were conducted during 2003 and 2004 in Chile to determine efficacy, timing of application, spectrum of control, and control of SU-resistant A. plantago aquatica with the herbicide penoxsulam, either in single applications or in sequence with other herbicides. Penoxsulam was applied a) 12 days after seeding (DAS) into the water (IW), b) in postemergence... |
| Tipo: Journal article |
Palavras-chave: Penoxsulam; Bensulfuron; Metsulfuron; MCPA; Bentazon; Triclopyr; Cyperus difformis; Schoenoplectus mucronatus; Alisma plantago-aquatica; Echinochloa crus-galli; Herbicide-resistance. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100008 |
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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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| Registros recuperados: 14 | |
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