Consulta: subjectFacets:"Imidazolinone"
Registros recuperados: 5
Data/hora: 09/06/2024 06:49:19

A Rapid Phenotyping Method for Imazamox Resistance in Wheat
Provedor de dados: Planta Daninha
Autores: BRECCIA,G.; BISIO,M.B.; PICARDI,L.; NESTARES,G.
ABSTRACT: The availability of imidazolinone (IMI) resistant cultivars has provided an effective option for weed control in wheat production systems. IMI herbicides control several weeds, including Avena fatua and Lolium multiflorum, which are the most frequent grass weeds in wheat crops of the Argentine Pampas. The aim of this study was to develop a soil-less method that allows rapid phenotyping of IMI resistance in wheat. Nine wheat cultivars differing in IMI resistance were evaluated through a between-paper germination method. Herbicide concentrations required to reduce shoot and root length by 50% for resistant cultivars were &gt; 75 fold that of the susceptible cultivars. The response of resistant and susceptible commercial cultivars was assessed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Imidazolinone; Herbicide resistance; Germination test; Triticum aestivum L.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100344

Carryover of Imazethapyr + Imazapic on Ryegrass and Non-tolerant Rice as Affected by Thickness of Soil Profile
Provedor de dados: Planta Daninha
Autores: Bundt,A.D.C.; Avila,L.A.; Agostinetto,D.; Nohatto,M.A.; Vargas,H.C.
Herbicides used in Clearfield(r) rice system may persist in the environment, damaging non-tolerant crops sown in succession and/or rotation. These damages vary according to soil characteristics, climate and soil management. The thickness of the soil profile may affect carryover effect; deeper soils may allow these molecules to leach, reaching areas below the roots absorption zone. The aim of this study was to evaluate the effect of the thickness of soil profile in the carryover of imazethapyr + imazapic on ryegrass and non-tolerant rice, sown in succession and rotation to rice, respectively. Lysimeters of different thicknesses (15, 20, 30, 40, 50 and 65 cm) were constructed, where 1 L ha-1 of the imazethapyr + imazapic formulated mixture was applied in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Degradation; Imidazolinone; Lolium multiflorum; Leaching; Oryza sativa.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200357

Sorption-Desorption Behavior of Imazethapyr and Imazapic on Six Brazilian Soils
Provedor de dados: Planta Daninha
Autores: MARINHO,M.I.C.; SOUZA,W.M.; CABRAL,M.F.; CASTRO NETO,M.D.; QUEIROZ,M.E.L.R.; SILVA,A.A.
ABSTRACT: The characterization of sorption-desorption for imazethapyr and imazapic in six agricultural soils was performed to assess the availability of these herbicides in pollution processes. In this pursuit, the batch equilibrium method and high-performance liquid chromatography were used. The magnitude of Kf values ranging from 0.38 to 2.52 mg1-n kg-1 Ln for imazethapyr and 0.43 to 2.72 mg1-n kg-1 Ln for imazapic indicate weak sorption in the evaluated soils. Soil pH (5.1 to 6.1) and iron oxalate affect sorption-desorption of both herbicides but the type and percentage of clay can be the main factor affecting these two processes. A high desorption percentage (&gt;70%) was found in Regosol, Dystric Plinthosol, Ferralsol (for both herbicides), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Imidazolinone; Pollution; Batch equilibrium.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100342

Resistance and differential susceptibility of Bidens pilosa and B. subalternans biotypes to ALS-inhibiting herbicides
Provedor de dados: Scientia Agricola
Autores: López-Ovejero,Ramiro Fernando; Carvalho,Saul Jorge Pinto de; Nicolai,Marcelo; Abreu,Aluana Gonçalves; Grombone-Guaratini,Maria Tereza; Toledo,Roberto Estevão Bragion; Christoffoleti,Pedro Jacob.
The frequent application of herbicides in agricultural areas may select resistant biotypes in weed populations, whose biological characteristics influence the speed and patterns of resistance. This research aims to charactere, simultaneously, resistance patterns and differential susceptibility of Bidens pilosa and B. subalternans biotypes to ALS-inhibiting herbicides of the imidazolinone and sulfonylurea chemical groups. Six hairy beggarticks biotypes, four suspected resistant and two known susceptible, were treated with eight rates of chlorimuron-ethyl or imazethapyr, in greenhouse conditions. Percent control and percent fresh weight of the plants were evaluated at 28 days after the application. B. subalternans is less susceptible to ALS-inhibiting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Imidazolinone; Sulfonylurea; Hairy beggarticks; Soybean.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000200005

Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean
Provedor de dados: Scientia Agricola
Autores: Gelmini,Gerson Augusto; Victória Filho,Ricardo; Novo,Maria do Carmo de Salvo Soares; Adoryan,Márcio Luiz.
Herbicides are widely used in soybean for weed control, and the selection pressure attributed to the repeated use of herbicides with similar modes of action on the same site has caused selection for resistant biotypes within and among previously susceptible species, such as Euphorbia heterophylla L., in relation to ALS enzyme inhibitors, in the states of Paraná, Rio Grande do Sul, and São Paulo, Brazil. Seeds of E. heterophylla were collected to examine possible new cases of resistant populations and to test alternative herbicide treatments to manage these populations, in the Caarapó region, State of Mato Grosso do Sul, Brazil, in areas where plants of this species have survived continuous herbicide applications. The experiment was carried out under...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Milkweed; Cross-resistance; Imidazolinone; Sulfonylurea.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500007