| Registro completo |
| Provedor de dados: |
Planta Daninha
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| País: |
Brazil
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| Título: |
Selectivity of Chlorimuron-Ethyl to Castorbean Crops
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| Autores: |
MACIEL,C.D.G.
LUSTOSA,S.B.C.
HELVIG,E.O.
COSTA,A.G.F.
RIBEIRO,R.B.
MATIAS,J.P.
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| Data: |
2017-01-01
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| Ano: |
2017
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| Palavras-chave: |
Intoxication
Formulation
Dose
Ricinus communis L
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| Resumo: |
ABSTRACT: 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).
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100276
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| Editor: |
Sociedade Brasileira da Ciência das Plantas Daninhas
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| Relação: |
10.1590/s0100-83582017350100077
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| Formato: |
text/html
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| Fonte: |
Planta Daninha v.35 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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