Data/hora: 22/06/2024 03:33:54

Biblioteca(s): | Embrapa Algodão.
Data corrente: | 21/12/2017
Data da última atualização: | 21/12/2017
Autoria: | MACIEL, C. D. G.; LUSTOSA, S. B. C.; COSTA, A. G. F.; RIBEIRO, R. B.; MATIAS, J. P.
Afiliação: | C.D.G. MACIEL, UNICENTRO - GUARAPUAVA; S. B. C. LUSTOSA, UNICENTRO- GUARAPUAVA; AUGUSTO GUERREIRO FONTOURA COSTA, CNPA; R. B. RIBEIRO, ESCOLA SUPERIOR DE AGRONOMIA DE PARAGUAÇU PAULISTA; J. P. MATIAS, UNIVERSIDADE ESTADUAL DE MARINGÁ, PAG/UEM.
Título: | Selectivity of Chlorimuron-Ethyl to Castorbean Crops.
Ano de publicação: | 2017
Fonte/Imprenta: | Planta daninha, v. 35, e017165959, 2017.
DOI: | 10.1590/S0100-83582017350100077
Idioma: | Inglês
Notas: | Publicação online.
Conteúdo: | Castorbean presents high sensitivity to competition; therefore, it is necessary to develop alternatives for the weed management, mainly for the chemical control of eudicotyledons species. The goal of this work was to evaluate the selectivity of chlorimuron-ethyl to castorbean crops in different development stages. Four experiments differentiated by the genetic material were conducted: Lyra, Íris and Savana hybrids and AL Guarany 2002 cultivar. The treatments corresponded to the application conditions of chlorimuron-ethyl [sample control with no application, doses of 15 e 20 g a.i. ha-1 with the formulations Classic? and Clorimuron Master Nortox?] in two phenological crop stages (4 to 5 and 7 to 8 true leaf stages). The experimental design was in randomized blocks with four replications, in a factorial scheme of 5 x 2 (herbicide and application stage). The intoxication was more severe for the 7 to 8 leaf stage and with the dose of 20 g ha-1 on day 7 days after application (DAA); there were plant recovery and mild symptoms on day 21 DAA, especially for the 4 to 5 leaf stage. The yield was reduced with the 20 g ha-1 dose for Lyra hybrid with both formulations and for Savana castorbean, only with the Classic? formulation. The chlorimuron-ethyl herbicide, at 15 g ha-1, showed selectivity to castorbean, regardless of the stage application (4 to 5 or 7 to 8 leaves).
Palavras-Chave: | Intoxication.
Thesagro: | Herbicida; Intoxicação; Mamona; Ricinus communis.
Thesaurus Nal: | Crops; Herbicides.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/169616/1/Selectivity-of-....pdf
Registro original: | Embrapa Algodão (CNPA)
Exemplares: | CNPA - (28434-1) - UPC - AP - DD -  -  -  - DIS