Data/hora: 14/06/2024 16:07:24

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)	
Exemplares: 	AI-SEDE - (61240-1) - UPE - AP - DD - 630.72081 - P474 -  - DIS
CPACT - (20396-1) - UPC - AP - DD -  -  -  - DIS