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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
14/01/2008 |
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Data da última atualização: |
25/03/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PARAÍBA, L. C. |
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Afiliação: |
Lourival Costa Paraíba, Embrapa Meio Ambiente. |
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Título: |
Pesticide bioconcentration modeling for fruit trees. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Chemosphere, Oxford, v. 66, n. 8, p. 1468-1475, 2007. |
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Idioma: |
Inglês |
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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. |
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Thesagro: |
Agrotóxico; Contaminação; Manga; Modelo Matemático; Regulador de Crescimento. |
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Categoria do assunto: |
-- |
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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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Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 128 | |
| 4. |  | PARAIBA, L. C. Estimativa do fator de bioconcentração de pesticidas em maçãs. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 20.; ANNUAL MEETING OF THE INTERAMERICAN SOCIETY FOR TROPICAL HORTICULTURE, 54., 2008, Vitória. Frutas para todos: estratégias, tecnologias e visão sustentável: anais. Vitória: INCAPER: Sociedade Brasileira de Fruticultura, 2008. 6p. CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 15. | | PARAIBA, L. C.; KATAGUIRI, K. Modelagem da bioconcentração de pesticidas em batatas. In: IBERIAN CONGRESS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 7.; IBEROAMERICAN CONGRESS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 4. 2008, Lisboa. Book of Abstracts... Lisboa: Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2008. p.154.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 128 | |
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