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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
13/08/2004 |
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Data da última atualização: |
01/03/2010 |
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Autoria: |
GALETI, H. V. A.; MILORI, D. M. B. P.; CUNHA, T. J. F.; MARTIN-NETO, L.; MADARI, B.; BENITES, V. de M.; SANTOS, G. de A. |
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Título: |
Analysis of concentration effect on laser-induced fluorescece of humic acids in solid samples. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 332-334. |
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Idioma: |
Inglês |
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Notas: |
CLASSIFICAÇÃO CDD: 630 |
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Conteúdo: |
I. INTRODUCTION
Soil organic matter (SOM) is constituted of, basically, two types of substances: humic (humic acid (HA), fulvic acid (FA) and humin (H)) and non humic (proteins, amino acids, polysaccharides, organic acid of low molecular weight, waxes and others). The humic substances (HS) are the most recalcitrant components of soil organic matter, and they are constituted of an heterogeneous mixture of functional groups. These are formed during the humification process, which modilies chemical structures of OM through the degradation of organic residues, being controlled through variables such as temperature, soil water regime, pH and free nutrients. The study of SOM, in particular of the
HS, has shown necessary and very important to understand mechanisms of its formation and stabilization. Its characterization is relevant because it has a function in the productivity and structure of soil.
Spectroscopic techniques which make possible studies of OM near natural situation are interesting, mainly if they work with low negative interference of intrinsic components of this material, such as metals. In this direction, a new technique has being applied: Laser-lnduced Fluorescence (LIF) spectroscopy. This technique presents, in recent and preliminary results, an indicative of high potential to evaluate humification degree of OM in whole soil through a relatively simple methodology.
However, physical and chemical parameters generate effects that inlluence the LIF. These , effects are not known yet, as well as the parameters which generate them. The concentration is a parameter that affects the LIF intensity, and can easily be controlled in laboratory. The goal of this work is to understand the dependence of soil HA fluorescence as a function of concentration, to evaluate which range of organic matter concentration the methodology can be applied. MenosI. INTRODUCTION
Soil organic matter (SOM) is constituted of, basically, two types of substances: humic (humic acid (HA), fulvic acid (FA) and humin (H)) and non humic (proteins, amino acids, polysaccharides, organic acid of low molecular weight, waxes and others). The humic substances (HS) are the most recalcitrant components of soil organic matter, and they are constituted of an heterogeneous mixture of functional groups. These are formed during the humification process, which modilies chemical structures of OM through the degradation of organic residues, being controlled through variables such as temperature, soil water regime, pH and free nutrients. The study of SOM, in particular of the
HS, has shown necessary and very important to understand mechanisms of its formation and stabilization. Its characterization is relevant because it has a function in the productivity and structure of soil.
Spectroscopic techniques which make possible studies of OM near natural situation are interesting, mainly if they work with low negative interference of intrinsic components of this material, such as metals. In this direction, a new technique has being applied: Laser-lnduced Fluorescence (LIF) spectroscopy. This technique presents, in recent and preliminary results, an indicative of high potential to evaluate humification degree of OM in whole soil through a relatively simple methodology.
However, physical and chemical parameters generate effects that inlluence the LIF. These , effe... Mostrar Tudo |
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Palavras-Chave: |
fluorescence spectroscopy; laser. |
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Thesaurus Nal: |
humic substances; soil organic matter. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02779naa a2200253 a 4500
001 1028588
005 2010-03-01
008 2004 bl --- 0-- u #d
100 1 $aGALETI, H. V. A.
245 $aAnalysis of concentration effect on laser-induced fluorescece of humic acids in solid samples.
260 $c2004
500 $aCLASSIFICAÇÃO CDD: 630
520 $aI. INTRODUCTION Soil organic matter (SOM) is constituted of, basically, two types of substances: humic (humic acid (HA), fulvic acid (FA) and humin (H)) and non humic (proteins, amino acids, polysaccharides, organic acid of low molecular weight, waxes and others). The humic substances (HS) are the most recalcitrant components of soil organic matter, and they are constituted of an heterogeneous mixture of functional groups. These are formed during the humification process, which modilies chemical structures of OM through the degradation of organic residues, being controlled through variables such as temperature, soil water regime, pH and free nutrients. The study of SOM, in particular of the HS, has shown necessary and very important to understand mechanisms of its formation and stabilization. Its characterization is relevant because it has a function in the productivity and structure of soil. Spectroscopic techniques which make possible studies of OM near natural situation are interesting, mainly if they work with low negative interference of intrinsic components of this material, such as metals. In this direction, a new technique has being applied: Laser-lnduced Fluorescence (LIF) spectroscopy. This technique presents, in recent and preliminary results, an indicative of high potential to evaluate humification degree of OM in whole soil through a relatively simple methodology. However, physical and chemical parameters generate effects that inlluence the LIF. These , effects are not known yet, as well as the parameters which generate them. The concentration is a parameter that affects the LIF intensity, and can easily be controlled in laboratory. The goal of this work is to understand the dependence of soil HA fluorescence as a function of concentration, to evaluate which range of organic matter concentration the methodology can be applied.
650 $ahumic substances
650 $asoil organic matter
653 $afluorescence spectroscopy
653 $alaser
700 1 $aMILORI, D. M. B. P.
700 1 $aCUNHA, T. J. F.
700 1 $aMARTIN-NETO, L.
700 1 $aMADARI, B.
700 1 $aBENITES, V. de M.
700 1 $aSANTOS, G. de A.
773 $tIn: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 332-334.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
15/06/1999 |
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Data da última atualização: |
26/06/2019 |
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Autoria: |
GUERRA, E. P.; DESTRO, D.; MIRANDA, L. A.; MONTALVAN, R. |
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Afiliação: |
EDSON PEREZ GUERRA, Pontifícia Universidade Católica do Paraná - PUC-PR/Departamento de Agronomia; DEONISIO DESTRO, /Universidade Estadual de Londrina - UEL/Departamento de Agronomia; LILIAN AZEVEDO MIRANDA, Doutoranda em Ciência de Alimentos/Universidade Estadual de Londrina - UEL; RICARDO MONTALVÁN, Universidade Estadual do Oeste do Paraná - UNIOESTE/Departamento de Agronomia. |
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Título: |
Performance of food-type soybean genotypes and their possibility for adaptation to brazilian latitudes. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 34, n. 4, p. 575-83, abr. 1999 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Comportamento de genótipos de soja tipo alimento e possibilidades de adaptação às latitudes brasileiras. |
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Conteúdo: |
This work was conducted at the Universidade Estadual de Londrina (UEL), inLondrina, State of Parana, Brazil, with the goat to study food-type soybean (Glycine max (L.) Merrill) genotypes performance for use in cultivation or crosses. A total of 104 genotypes were analyzed: 88 were food-type with large seeds, eight were food-type with small seeds, and eight-grain types adapted cultivars. The experimental plan was in randomized complete block design with four replications, and 12 traits of agronomic importance were considered. Genetic diversity was observed in the food-type germplasm. There were some genotypes with high yield adapted to a normal period of sowing. Soybean genetic improvement programs for direct human consumption in Brazil, either by means of Asiatic pure lines or by means of the incorporation of genes for late flowering in short-day conditions in this lines is highly viable. |
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Palavras-Chave: |
Agronomic characters; Caracteres agronomicos; Genetic breeding; Melhoramento genetico. |
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Thesagro: |
Germoplasma; Glycine Max. |
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Thesaurus NAL: |
germplasm. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/11258/1/pab440-96j.pdf
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Marc: |
LEADER 01776naa a2200253 a 4500
001 1095333
005 2019-06-26
008 1999 bl uuuu u00u1 u #d
100 1 $aGUERRA, E. P.
245 $aPerformance of food-type soybean genotypes and their possibility for adaptation to brazilian latitudes.
260 $c1999
500 $aTítulo em português: Comportamento de genótipos de soja tipo alimento e possibilidades de adaptação às latitudes brasileiras.
520 $aThis work was conducted at the Universidade Estadual de Londrina (UEL), inLondrina, State of Parana, Brazil, with the goat to study food-type soybean (Glycine max (L.) Merrill) genotypes performance for use in cultivation or crosses. A total of 104 genotypes were analyzed: 88 were food-type with large seeds, eight were food-type with small seeds, and eight-grain types adapted cultivars. The experimental plan was in randomized complete block design with four replications, and 12 traits of agronomic importance were considered. Genetic diversity was observed in the food-type germplasm. There were some genotypes with high yield adapted to a normal period of sowing. Soybean genetic improvement programs for direct human consumption in Brazil, either by means of Asiatic pure lines or by means of the incorporation of genes for late flowering in short-day conditions in this lines is highly viable.
650 $agermplasm
650 $aGermoplasma
650 $aGlycine Max
653 $aAgronomic characters
653 $aCaracteres agronomicos
653 $aGenetic breeding
653 $aMelhoramento genetico
700 1 $aDESTRO, D.
700 1 $aMIRANDA, L. A.
700 1 $aMONTALVAN, R.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 34, n. 4, p. 575-83, abr. 1999
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