Consulta: subjectFacets:"Herbicide mixtures"
Registros recuperados: 3
Data/hora: 09/06/2024 09:49:29

A field survey of crop management practices and distribution of ALS resistant Euphorbia heterophylla in two states in southern Brazil
Provedor de dados: Planta Daninha
Autores: Vidal,R.A.; Winkler,L.M.; Hernandes,G.C.; Fleck,N.G.; Merotto Jr.,A.; Trezzi,M.M.
Herbicide resistance was reported in Brazil almost ten years ago. One of the main weeds with herbicide resistance is wild poinsettia (Euphorbia heterophylla). This work evaluates the distribution of ALS-resistant E. heterophylla in two states in southern Brazil and determines the major contributing management causes for weed resistance selection in the area. E. heterophylla seeds from 148 sites located in Paraná and Rio Grande do Sul were sampled during 2001 and 2002. Farmers provided specific site data for weed control, tillage system, crop rotation and harvesting operations during previous years. ALS resistant E. heterophylla biotypes were found widely distributed in the survey area. Data analysis suggests seed dissemination is unlikely to explain the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Imazethapyr; Wild poinsettia; Herbicide mixtures.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582004000300010

Herbicide efficacy on Borreria densiflora control in pre- and post-emergence conditions
Provedor de dados: Planta Daninha
Autores: Martins,B.A.B.; Christoffoleti,P.J.
The weed Borreria densiflora is a management issue in soybean and sugarcane crops from North and Northeastern Brazil. Knowledge upon chemical control of B. densiflora contributes to the integrated management of this weed species, especially when active ingredient options become reduced due to the selection of herbicide resistant or tolerant weed species. Experiments in pre- and post-emergence of B. densiflora were conducted in greenhouse, in a randomized block design and four replications. In pre-emergence, the dose-response curve methodology was used and 7 herbicides were tested. In post-emergence, 9 herbicides at the recommended rate and 4 herbicide mixtures were tested. For pre and post-emergence conditions, evaluations were conducted at 60 and 21 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vassourinha-de-botão; Chemical control; Dose-response; Herbicide mixtures; Integrated weed management.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400017

Identifying Optimum Herbicide Mixtures to Manage and Avoid Fenoxaprop-p-Ethyl Resistant Phalaris minor in Wheat
Provedor de dados: Planta Daninha
Autores: ABBAS,T.; NADEEM,M.A.; TANVEER,A.; AHMAD,R.
ABSTRACT Use of herbicide mixtures has been advocated as most effective strategy for avoidance and management of herbicide resistant weeds. Effect of twelve selected treatments of four herbicides (clodinafop-propargil, metribuzin, pinoxaden and sulfosulfuron) two-way mixtures at different doses was investigated against fenoxaprop-p-ethyl resistant and susceptible populations of P. minor grown along the wheat plants. In repeated experiment, herbicides mixtures were applied at 3 to 4 leaf stage of P. minor under greenhouse conditions. All the herbicide mixtures were effective to control resistant as well as susceptible P. minor. Mixtures having 75% lethal dose of each mixture component provided best control against P. minor. Mixtures with 50% lethal dose of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicide mixtures; Resistance management; Resistance avoidance; Triticum aestivum; Erva-cabecinha.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400787