| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Agroindústria de Alimentos; Embrapa Agropecuária Oeste; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Meio Ambiente; Embrapa Pantanal; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia; Embrapa Roraima; Embrapa Semiárido; Embrapa Solos; Embrapa Suínos e Aves; Embrapa Tabuleiros Costeiros; Embrapa Unidades Centrais; Embrapa Uva e Vinho. MenosEmbrapa Agrobiologia; Embrapa Agroindústria de Alimentos; Embrapa Agropecuária Oeste; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Meio Ambiente; Embrapa Pantanal; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Rondônia; Embrapa Roraima... Mostrar Todas |
|
Data corrente: |
18/06/1993 |
|
Data da última atualização: |
01/12/2022 |
|
Autoria: |
MENEZES SOBRINHO, J. A. de; LOPES, C. A.; REIFSCHNEIDER, F. J. B.; CHARCHAR, J. M.; CRISOSTOMO, L. A.; CARRIJO, O. A.; BARBOSA, S. |
|
Afiliação: |
João Alves de Menezes Sobrinho; CARLOS ALBERTO LOPES, CNPH; FRANCISCO JOSE BECKER REIFSCHNEIDER, CNPH; João Maria Charchar; LINDBERGUE ARAUJO CRISOSTOMO, CNPAT; Osmar Alves Carrijo; Sebastião Barbosa. |
|
Título: |
A cultura do alho. |
|
Ano de publicação: |
1993 |
|
Fonte/Imprenta: |
Brasília, DF: EMBRAPA SPI, 1993. |
|
Páginas: |
50 p. |
|
Série: |
(EMBRAPA-SPI. Coleção Plantar, 1). |
|
Idioma: |
Português |
|
Conteúdo: |
Recomendações técnicas para cultivo do alho: clima, principais variedades, épocas de plantio, preparo do solo, calagem, adubação, irrigação, controle de doenças e pragas, medidas preventivas, uso correto de agroquímicos, cuidados pós-colheita, comercialização e coeficientes de produção. |
|
Palavras-Chave: |
Alliumm sativum; Armazenamento do alho; Brasil; Brasília; Classificação; Cultivar; Cultivation; Cultivo; Harvest; Postharvest; Trato cultural. |
|
Thesagro: |
Adubação; Alho; Allium Sativum; Análise Econômica; Armazenamento; Calagem; Clima; Colheita; Doença; Embalagem; Hortaliça; Inseto; Mercado; Plantio; Pós-Colheita; Praga; Produção; Produtividade; Sistema de Cultivo; Solo. |
|
Thesaurus Nal: |
Cultivation area; economics; fertilizers; garlic; marketing; weeds; yields. |
|
Categoria do assunto: |
--
A Sistemas de Cultivo |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/11898/2/00013200.pdf
|
|
Marc: |
LEADER 01859nam a2200661 a 4500
001 1100672
005 2022-12-01
008 1993 bl uuuu 00u1 u #d
100 1 $aMENEZES SOBRINHO, J. A. de
245 $aA cultura do alho.
260 $aBrasília, DF: EMBRAPA SPI$c1993
300 $a50 p.
490 $a(EMBRAPA-SPI. Coleção Plantar, 1).
520 $aRecomendações técnicas para cultivo do alho: clima, principais variedades, épocas de plantio, preparo do solo, calagem, adubação, irrigação, controle de doenças e pragas, medidas preventivas, uso correto de agroquímicos, cuidados pós-colheita, comercialização e coeficientes de produção.
650 $aCultivation area
650 $aeconomics
650 $afertilizers
650 $agarlic
650 $amarketing
650 $aweeds
650 $ayields
650 $aAdubação
650 $aAlho
650 $aAllium Sativum
650 $aAnálise Econômica
650 $aArmazenamento
650 $aCalagem
650 $aClima
650 $aColheita
650 $aDoença
650 $aEmbalagem
650 $aHortaliça
650 $aInseto
650 $aMercado
650 $aPlantio
650 $aPós-Colheita
650 $aPraga
650 $aProdução
650 $aProdutividade
650 $aSistema de Cultivo
650 $aSolo
653 $aAlliumm sativum
653 $aArmazenamento do alho
653 $aBrasil
653 $aBrasília
653 $aClassificação
653 $aCultivar
653 $aCultivation
653 $aCultivo
653 $aHarvest
653 $aPostharvest
653 $aTrato cultural
700 1 $aLOPES, C. A.
700 1 $aREIFSCHNEIDER, F. J. B.
700 1 $aCHARCHAR, J. M.
700 1 $aCRISOSTOMO, L. A.
700 1 $aCARRIJO, O. A.
700 1 $aBARBOSA, S.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
12/01/2009 |
|
Data da última atualização: |
06/04/2022 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
|
Autoria: |
NOVOTNY, E. H.; HAYES, M. H. B.; SONG, G.; AZEVEDO, E. R. de; BONAGAMBA, T. |
|
Afiliação: |
ETELVINO HENRIQUE NOVOTNY, CNPS; MICHAEL HILARY B. HAYES, UNIVERSITY OF LIMERICK; GUIXUE SONG, UNIVERSITY OF LIMERICK; EDUARDO RIBEIRO DE AZEVEDO, USP; TITO JOSÉ BONAGAMBA, USP. |
|
Título: |
Extraction and characterisation of humin fraction from Amazonian anthropogenic dark earth soils ("Terra Preta de Indios"). |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: INTERNATIONAL MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 14., 2008, Saint Petersburg. From molecular understanding to innovative applications of humic substances: proceedings... Moscow: Lomonosov Moscow State University, 2008. v. 1, p. 105-108. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Humin, the humic fraction that is insoluble in water at all pH values, typically comprises more than 50% of soil organic matter (1). Because of the difficulties in isolation, humin compositions and properties have been less extensively studied than those of humic and fulvic acids (2). On the basis of the accepted definition, humin can include any humic-type substances that are not dissolv ed during exhaustive extractions with aqueous base. A solvent system composed of a mixture of aqueous base/urea (0.1 M NaOH + 6 M urea, base/urea) has been reported to isolate material that would be classified as humin in the classical definition (3, 4, 5). Because urea is a powerful hydrogen bond breaker, it is considered that soil organic components were released from associations with humin materials either by the breaking of hydrogen bonds, or by the disruption of steric constraints by materials that had trapped the components released. Dimethylsulfoxide (DMSO), a dipolar aprotic solvent, is an excellent solvent for cations but a poor solvent for anions (6). It is a good hydrogen bond breaker and the non- polar backbone (as distinct from the S=O face) of DMSO can be considered to have affinities for less polar humin components. A solvent mixture of DMSO with HCl (6%, v/v) was reported to have isolated less than 22% of humin material from soils (7, 8, 9). However H 2SO4 is a very polar liquid with a high dielectric constant (~100), and due to the process of autoprotolysis (10), protons are highly mobile in H 2SO4. This enables it to protonate the conjugate bases (carboxylates and phenolates), thereby increasing the solubility of the organic material (4, 5), since anions are weakly solvated in DMSO. MenosHumin, the humic fraction that is insoluble in water at all pH values, typically comprises more than 50% of soil organic matter (1). Because of the difficulties in isolation, humin compositions and properties have been less extensively studied than those of humic and fulvic acids (2). On the basis of the accepted definition, humin can include any humic-type substances that are not dissolv ed during exhaustive extractions with aqueous base. A solvent system composed of a mixture of aqueous base/urea (0.1 M NaOH + 6 M urea, base/urea) has been reported to isolate material that would be classified as humin in the classical definition (3, 4, 5). Because urea is a powerful hydrogen bond breaker, it is considered that soil organic components were released from associations with humin materials either by the breaking of hydrogen bonds, or by the disruption of steric constraints by materials that had trapped the components released. Dimethylsulfoxide (DMSO), a dipolar aprotic solvent, is an excellent solvent for cations but a poor solvent for anions (6). It is a good hydrogen bond breaker and the non- polar backbone (as distinct from the S=O face) of DMSO can be considered to have affinities for less polar humin components. A solvent mixture of DMSO with HCl (6%, v/v) was reported to have isolated less than 22% of humin material from soils (7, 8, 9). However H 2SO4 is a very polar liquid with a high dielectric constant (~100), and due to the process of autoprotolysis (10), protons a... Mostrar Tudo |
|
Palavras-Chave: |
black carbon; indios; NMR; pyrogenic carbon. |
|
Thesaurus NAL: |
humin; terra preta. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/334758/1/Extraction-and-characterization-of-humin-fraction-2008.pdf
|
|
Marc: |
LEADER 02605nam a2200229 a 4500
001 1334758
005 2022-04-06
008 2008 bl uuuu u00u1 u #d
100 1 $aNOVOTNY, E. H.
245 $aExtraction and characterisation of humin fraction from Amazonian anthropogenic dark earth soils ("Terra Preta de Indios").$h[electronic resource]
260 $aIn: INTERNATIONAL MEETING OF THE INTERNATIONAL HUMIC SUBSTANCES SOCIETY, 14., 2008, Saint Petersburg. From molecular understanding to innovative applications of humic substances: proceedings... Moscow: Lomonosov Moscow State University, 2008. v. 1, p. 105-108.$c2008
520 $aHumin, the humic fraction that is insoluble in water at all pH values, typically comprises more than 50% of soil organic matter (1). Because of the difficulties in isolation, humin compositions and properties have been less extensively studied than those of humic and fulvic acids (2). On the basis of the accepted definition, humin can include any humic-type substances that are not dissolv ed during exhaustive extractions with aqueous base. A solvent system composed of a mixture of aqueous base/urea (0.1 M NaOH + 6 M urea, base/urea) has been reported to isolate material that would be classified as humin in the classical definition (3, 4, 5). Because urea is a powerful hydrogen bond breaker, it is considered that soil organic components were released from associations with humin materials either by the breaking of hydrogen bonds, or by the disruption of steric constraints by materials that had trapped the components released. Dimethylsulfoxide (DMSO), a dipolar aprotic solvent, is an excellent solvent for cations but a poor solvent for anions (6). It is a good hydrogen bond breaker and the non- polar backbone (as distinct from the S=O face) of DMSO can be considered to have affinities for less polar humin components. A solvent mixture of DMSO with HCl (6%, v/v) was reported to have isolated less than 22% of humin material from soils (7, 8, 9). However H 2SO4 is a very polar liquid with a high dielectric constant (~100), and due to the process of autoprotolysis (10), protons are highly mobile in H 2SO4. This enables it to protonate the conjugate bases (carboxylates and phenolates), thereby increasing the solubility of the organic material (4, 5), since anions are weakly solvated in DMSO.
650 $ahumin
650 $aterra preta
653 $ablack carbon
653 $aindios
653 $aNMR
653 $apyrogenic carbon
700 1 $aHAYES, M. H. B.
700 1 $aSONG, G.
700 1 $aAZEVEDO, E. R. de
700 1 $aBONAGAMBA, T.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
