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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
27/04/2017 |
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Data da última atualização: |
27/04/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
REFATTI, J. P.; AVILA, L. A.; NOLDIN, J. A.; PACHECO, I.; PESTANA, R. R. |
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Título: |
Leaching and residual activity of imidazolinone herbicides in lowland soils. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Ciência Rural, Santa Maria, RS, v. 47, n. 5, 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
Herbicides used in the Clearfield® rice (Oryza sativa L.) production system have a potential for leaching. This can result in contamination
of underground water resources and cause injury to not tolerant crops that are sown in a succession and/or crop rotation. The objective of this study was
to determine the leaching potential and the residual activity of the herbicides used in the Clearfield® rice system. The experiment was conducted over a
period of two years and consisted of conducting a field test to be followed by two bioassays with a year of difference between their implementation. Initially
an experiment was conducted in lowland area where it was planted the cultivar of rice ?PUITA INTA CL?. Approximately one and two years thereafter, soil
samples from each plot were collected at intervals of 5cm to a depth of 30cm (B factor) for the bioassay to evaluate persistence of herbicides. Factor A
was composed of mixtures formulated of imazethapyr + imazapic (75 + 25g a.i. L-1), imazapyr + imazapic (525 + 175g a.i. kg-1) in two doses, imazethapyr
(100g a.i. L-1) and treatment control without application. Basing on results, it was concluded that the mixtures imazethapyr + imazapic, imazapyr +
imazapic and imazethapyr leached into the soil, reaching depths of up to 25cm in lowland soil. Imidazolinone herbicides used today in the irrigated rice
Clearfield® system are persistent in soil, and their phytotoxic activity can be observed up to two years after application.
Key words: imazethapyr, imazapic, imazapyr, contamination, groundwater MenosHerbicides used in the Clearfield® rice (Oryza sativa L.) production system have a potential for leaching. This can result in contamination
of underground water resources and cause injury to not tolerant crops that are sown in a succession and/or crop rotation. The objective of this study was
to determine the leaching potential and the residual activity of the herbicides used in the Clearfield® rice system. The experiment was conducted over a
period of two years and consisted of conducting a field test to be followed by two bioassays with a year of difference between their implementation. Initially
an experiment was conducted in lowland area where it was planted the cultivar of rice ?PUITA INTA CL?. Approximately one and two years thereafter, soil
samples from each plot were collected at intervals of 5cm to a depth of 30cm (B factor) for the bioassay to evaluate persistence of herbicides. Factor A
was composed of mixtures formulated of imazethapyr + imazapic (75 + 25g a.i. L-1), imazapyr + imazapic (525 + 175g a.i. kg-1) in two doses, imazethapyr
(100g a.i. L-1) and treatment control without application. Basing on results, it was concluded that the mixtures imazethapyr + imazapic, imazapyr +
imazapic and imazethapyr leached into the soil, reaching depths of up to 25cm in lowland soil. Imidazolinone herbicides used today in the irrigated rice
Clearfield® system are persistent in soil, and their phytotoxic activity can be observed up to two years after application.
Key words: ... Mostrar Tudo |
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Palavras-Chave: |
contamination; groundwater; imazapic; imazapyr; imazethapyr. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02190naa a2200229 a 4500
001 1126156
005 2017-04-27
008 2017 bl uuuu u00u1 u #d
100 1 $aREFATTI, J. P.
245 $aLeaching and residual activity of imidazolinone herbicides in lowland soils.$h[electronic resource]
260 $c2017
520 $aHerbicides used in the Clearfield® rice (Oryza sativa L.) production system have a potential for leaching. This can result in contamination of underground water resources and cause injury to not tolerant crops that are sown in a succession and/or crop rotation. The objective of this study was to determine the leaching potential and the residual activity of the herbicides used in the Clearfield® rice system. The experiment was conducted over a period of two years and consisted of conducting a field test to be followed by two bioassays with a year of difference between their implementation. Initially an experiment was conducted in lowland area where it was planted the cultivar of rice ?PUITA INTA CL?. Approximately one and two years thereafter, soil samples from each plot were collected at intervals of 5cm to a depth of 30cm (B factor) for the bioassay to evaluate persistence of herbicides. Factor A was composed of mixtures formulated of imazethapyr + imazapic (75 + 25g a.i. L-1), imazapyr + imazapic (525 + 175g a.i. kg-1) in two doses, imazethapyr (100g a.i. L-1) and treatment control without application. Basing on results, it was concluded that the mixtures imazethapyr + imazapic, imazapyr + imazapic and imazethapyr leached into the soil, reaching depths of up to 25cm in lowland soil. Imidazolinone herbicides used today in the irrigated rice Clearfield® system are persistent in soil, and their phytotoxic activity can be observed up to two years after application. Key words: imazethapyr, imazapic, imazapyr, contamination, groundwater
653 $acontamination
653 $agroundwater
653 $aimazapic
653 $aimazapyr
653 $aimazethapyr
700 1 $aAVILA, L. A.
700 1 $aNOLDIN, J. A.
700 1 $aPACHECO, I.
700 1 $aPESTANA, R. R.
773 $tCiência Rural, Santa Maria, RS$gv. 47, n. 5, 2017.
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
12/05/2008 |
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Data da última atualização: |
13/10/2011 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Circulação/Nível: |
-- - -- |
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Autoria: |
SAMOHYL, R. W.; ROCHA, R.; MATTOS, V. L. D. de. |
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Afiliação: |
Epagri |
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Título: |
Utilizacao do metodo de holt-winters para previsao do leite entregue as industrias catarinenses. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
In: ENCONTRO NACIONAL DE ENGENHARIA DE PRODUCAO, 21. INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND OPERATIONS MANGEMENT, 7., 2001, Salvador, BA. Anais... Salvador: FTC, 2001. 1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
The behavior of the milk delivery to the industries from Santa Catarina State was analysed. The milk production in the State of Santa Catarina has been increasing in the last years, with an outstanding monthly seasonality. The use of exponential method of Holt-Winters to forecast the monthly milk deliveries was not satisfactory, because the additive and multiplicative models of this method didn't get to capture some present information in the time series data. As quantidades mensais de leite recebidas pelas indústrias catarinenses apresentaram, no período de 1989 a 1999, tendência de aumento anual e sazonalidade mensal. A previsão das quantidades entregues de leite às indústrias catarinenses utilizando os métodos exponenciais aditivo e multiplicativo de Holt-Winters, utilizando como teste os dados do ano de 1999, não foi satisfatória. Existem padrões na série temporal que os modelos não conseguiram captar.
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Palavras-Chave: |
Industria de laticinio; Leite; Metodo de holt-winters; Santa Catarina. |
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Categoria do assunto: |
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Marc: |
LEADER 01639naa a2200193 a 4500
001 1059418
005 2011-10-13
008 2001 bl uuuu u00u1 u #d
100 1 $aSAMOHYL, R. W.
245 $aUtilizacao do metodo de holt-winters para previsao do leite entregue as industrias catarinenses.
260 $c2001
520 $aThe behavior of the milk delivery to the industries from Santa Catarina State was analysed. The milk production in the State of Santa Catarina has been increasing in the last years, with an outstanding monthly seasonality. The use of exponential method of Holt-Winters to forecast the monthly milk deliveries was not satisfactory, because the additive and multiplicative models of this method didn't get to capture some present information in the time series data. As quantidades mensais de leite recebidas pelas indústrias catarinenses apresentaram, no período de 1989 a 1999, tendência de aumento anual e sazonalidade mensal. A previsão das quantidades entregues de leite às indústrias catarinenses utilizando os métodos exponenciais aditivo e multiplicativo de Holt-Winters, utilizando como teste os dados do ano de 1999, não foi satisfatória. Existem padrões na série temporal que os modelos não conseguiram captar.
653 $aIndustria de laticinio
653 $aLeite
653 $aMetodo de holt-winters
653 $aSanta Catarina
700 1 $aROCHA, R.
700 1 $aMATTOS, V. L. D. de.
773 $tIn: ENCONTRO NACIONAL DE ENGENHARIA DE PRODUCAO, 21. INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND OPERATIONS MANGEMENT, 7., 2001, Salvador, BA. Anais... Salvador: FTC, 2001. 1 CD-ROM.
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