Data/hora: 05/06/2024 06:45:33

Biblioteca(s): | Embrapa Clima Temperado; Embrapa Unidades Centrais.
Data corrente: | 15/05/2017
Data da última atualização: | 24/04/2018
Autoria: | MARTINS, J. F. da S.; MATTOS, M. L. T.; SILVA, F. F. da; BUTTOW, G. T.
Afiliação: | JOSE FRANCISCO DA SILVA MARTINS, CPACT; MARIA LAURA TURINO MATTOS, CPACT; FERNANDO FELISBERTO DA SILVA, UNIPAMPA; GERMANO TESSMER BUTTOW, UFPel.
Título: | Fipronil residual content in the soil for the control of Oryzophagus oryzae in subsequent flooded rice crops.
Ano de publicação: | 2017
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 4, p. 228-235, abr. 2017.
Idioma: | Inglês
Notas: | Título em português: Teor residual de fipronil no solo para o controle de Oryzophagus oryzae em cultivos subsequentes de arroz irrigado.
Conteúdo: | The objective of this work was to evaluate the potential of fipronil (a.i.) residual content in the soil of flooded rice fields, for the control of Oryzophagus oryzae (Coleoptera: Curculionidae) in subsequent rice cultivations. In 2010/2011, plots (25x55 m) were installed with three treatments: 30 g fipronil (a.i.) 100 kg-1 seed; mixture of 1/3 treated seed (30 g fipronil 100 kg-1 seed) with 2/3 untreated seed equivalent to 10 g fipronil (a.i.) 100 kg-1 seed; and a control without insecticide application. The plots were regrown in 2011/2012, 2012/2013, and 2013/2014 without any insecticide application. The following variables were evaluated: number of larvae and adults from standard samples of soil and roots, and grain yield. In 2011/2012 and 2012/2013, the concentrations of fipronil and of its residues in the soil of plots were evaluated by liquid chromatography and mass spectrometry, and the metabolite fipronil-sulfide (? 1.1 ?g kg-1) was detected. In the three seasons, after the use of seeds treated with 10 and 30 g fipronil, the average larval infestation of O. oryzae was 65.2 and 96.1% lower, and the average of rice grain yield was 16.9 and 25.5% higher than in the control plot, respectively. The residual fipronil content in the soil, mainly of the highest dose, effectively controls the insect.
Palavras-Chave: | Fipronil-sulfeto; Fipronil-sulfide; Gorgulho-aquático; Inseticide.
Thesagro: | Inseticida; Oryza Sativa.
Thesaurus Nal: | Lissorhoptrus oryzophilus.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/159882/1/Fipronil-residual-content.pdf
Registro original: | Embrapa Clima Temperado (CPACT)

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