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Registro Completo |
Biblioteca(s): |
Embrapa Clima Temperado; Embrapa Unidades Centrais. |
Data corrente: |
20/11/2014 |
Data da última atualização: |
09/09/2015 |
Tipo da produção científica: |
Circular Técnica |
Autoria: |
STEINMETZ, S.; CUADRA, S. V.; PEREIRA, C. B.; SANTOS, E. L. dos; ALMEIDA, I. R. de. |
Afiliação: |
SILVIO STEINMETZ, CPACT; SANTIAGO VIANNA CUADRA, CPACT; CRISTOVAO BASILIO PEREIRA, CPACT; EMERSON LANGIE DOS SANTOS, CPACT; IVAN RODRIGUES DE ALMEIDA, CPACT. |
Título: |
GD Arroz: Programa Baseado em Graus-dia para Estimar a Data de Diferenciação da Panícula Visando a Adubação Nitrogenada em Cobertura. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Pelotas: Embrapa Clima Temperado, 2014. |
Páginas: |
12 p. |
Série: |
(Embrapa Clima Temperado. Circular técnica, 155). |
Idioma: |
Português |
Palavras-Chave: |
GD Arroz; Graus-dia. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/112067/1/Circular-155-web.pdf
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Marc: |
LEADER 00631nam a2200193 a 4500 001 2000650 005 2015-09-09 008 2014 bl uuuu u0uu1 u #d 100 1 $aSTEINMETZ, S. 245 $aGD Arroz$bPrograma Baseado em Graus-dia para Estimar a Data de Diferenciação da Panícula Visando a Adubação Nitrogenada em Cobertura. 260 $aPelotas: Embrapa Clima Temperado$c2014 300 $a12 p. 490 $a(Embrapa Clima Temperado. Circular técnica, 155). 653 $aGD Arroz 653 $aGraus-dia 700 1 $aCUADRA, S. V. 700 1 $aPEREIRA, C. B. 700 1 $aSANTOS, E. L. dos 700 1 $aALMEIDA, I. R. de
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Embrapa Clima Temperado (CPACT) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
14/01/2008 |
Data da última atualização: |
25/03/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
PARAÍBA, L. C. |
Afiliação: |
Lourival Costa Paraíba, Embrapa Meio Ambiente. |
Título: |
Pesticide bioconcentration modeling for fruit trees. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Chemosphere, Oxford, v. 66, n. 8, p. 1468-1475, 2007. |
Idioma: |
Inglês |
Conteúdo: |
The model presented allows simulating the pesticide concentration evolution in fruit trees and estimating the pesticide bioconcentration factor in fruits. Pesticides are non-ionic organic compounds that are degraded in soils cropped with woody species, fruit trees and other perennials. The model allows estimating the pesticide uptake by plants through the water transpiration stream and also the time in which maximum pesticide concentration occur in the fruits. The equation proposed presents the relationships between bioconcentration factor (BCF) and the following variables: plant water transpiration volume (Q), pesticide transpiration stream concentration factor (TSCF), pesticide stem-water partition coefficient (KWood,W), stem dry biomass (M) and pesticide dissipation rate in the soil?plant system (kEGS). The modeling started and was developed from a previous model ?Fruit Tree Model? (FTM), reported by Trapp and collaborators in 2003, to which was added the hypothesis that the pesticide degradation in the soil follows a first order kinetic equation. The FTM model for pesticides (FTM-p) was applied to a hypothetic mango plant cropping (Mangifera indica) treated with paclobutrazol (growth regulator) added to the soil. The model fitness was evaluated through the sensitivity analysis of the pesticide BCF values in fruits with respect to the model entry data variability. |
Thesagro: |
Agrotóxico; Contaminação; Manga; Modelo Matemático; Regulador de Crescimento. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01877naa a2200181 a 4500 001 1015981 005 2014-03-25 008 2007 bl uuuu u00u1 u #d 100 1 $aPARAÍBA, L. C. 245 $aPesticide bioconcentration modeling for fruit trees. 260 $c2007 520 $aThe model presented allows simulating the pesticide concentration evolution in fruit trees and estimating the pesticide bioconcentration factor in fruits. Pesticides are non-ionic organic compounds that are degraded in soils cropped with woody species, fruit trees and other perennials. The model allows estimating the pesticide uptake by plants through the water transpiration stream and also the time in which maximum pesticide concentration occur in the fruits. The equation proposed presents the relationships between bioconcentration factor (BCF) and the following variables: plant water transpiration volume (Q), pesticide transpiration stream concentration factor (TSCF), pesticide stem-water partition coefficient (KWood,W), stem dry biomass (M) and pesticide dissipation rate in the soil?plant system (kEGS). The modeling started and was developed from a previous model ?Fruit Tree Model? (FTM), reported by Trapp and collaborators in 2003, to which was added the hypothesis that the pesticide degradation in the soil follows a first order kinetic equation. The FTM model for pesticides (FTM-p) was applied to a hypothetic mango plant cropping (Mangifera indica) treated with paclobutrazol (growth regulator) added to the soil. The model fitness was evaluated through the sensitivity analysis of the pesticide BCF values in fruits with respect to the model entry data variability. 650 $aAgrotóxico 650 $aContaminação 650 $aManga 650 $aModelo Matemático 650 $aRegulador de Crescimento 773 $tChemosphere, Oxford$gv. 66, n. 8, p. 1468-1475, 2007.
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