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| Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
30/12/2019 |
Data da última atualização: |
30/12/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CARVALHO, A. D. F. de; SILVA, P. P.; SILVA, G. O. da; SOUZA, C. V. A. |
Afiliação: |
AGNALDO D FERREIRA DE CARVALHO, CNPH; PATRÍCIA PEREIRA SILVA, BOLSISTA CNPQ/CNPH; GIOVANI OLEGARIO DA SILVA, CNPH; C. V. A. SOUZA, UNIVERSIDADE FEDERAL DE PELOTAS. |
Título: |
Selection of carrot progenies for seed germination at high temperatures. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Acta Horticulturae, v. 1249, p. 181-183, Sept. 2019. Edição do Proceedings of VI International Symposium on Seed, Transplant and Stand Establishment of Horticultural Crops, Brasília. |
ISSN: |
2406-6168 |
Idioma: |
Inglês |
Conteúdo: |
This study aimed to select progenies of carrot for germination at high temperatures. The experiment was carried out in the Seed Laboratory at Embrapa Vegetables, Brasilia, DF, Brazil. Forty progenies from the population CNPH-606 of the carrot breeding program at Embrapa Vegetables were evaluated. |
Thesagro: |
Daucus Carota; Genética. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00984naa a2200193 a 4500 001 2117940 005 2019-12-30 008 2019 bl uuuu u00u1 u #d 022 $a2406-6168 100 1 $aCARVALHO, A. D. F. de 245 $aSelection of carrot progenies for seed germination at high temperatures.$h[electronic resource] 260 $c2019 520 $aThis study aimed to select progenies of carrot for germination at high temperatures. The experiment was carried out in the Seed Laboratory at Embrapa Vegetables, Brasilia, DF, Brazil. Forty progenies from the population CNPH-606 of the carrot breeding program at Embrapa Vegetables were evaluated. 650 $aDaucus Carota 650 $aGenética 700 1 $aSILVA, P. P. 700 1 $aSILVA, G. O. da 700 1 $aSOUZA, C. V. A. 773 $tActa Horticulturae$gv. 1249, p. 181-183, Sept. 2019. Edição do Proceedings of VI International Symposium on Seed, Transplant and Stand Establishment of Horticultural Crops, Brasília.
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
06/02/2018 |
Data da última atualização: |
30/10/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
GOMES, E. T. M.; BERBARA, R. L. L.; PEREIRA, M. G.; URQUIAGA, S.; TAVARES, O. C. H.; ASSUNÇÃO, S. A.; ZONTA, E.; AMARAL SOBRINHO, N. M. do; GARCPUAM A, C. |
Afiliação: |
ERNANE TARCÍSIO MARTINS GOMES, UFRRJ; RICARDO LUIS LOURO BERBARA, UFRRJ; MARCOS GERVASIO PEREIRA, UFRRJ; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; ORLANDO CARLOS HUERTAS TAVARES, UFRRJ; SHIRLEI ALMEIDA ASSUNÇÃO, UFRRJ; EVERALDO ZONTA, UFRRJ; NELSON MOURA BRASIL DO AMARAL SOBRINHO, UFRRJ; ANDRÉS CALDERÍN GARCÍA, UFRRJ. |
Título: |
Effects of farmed managements in sandy soils on composition and stabilization of soil humic substances. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Land Degradation & Development, v. 29, n. 1, p. 68-79, 2018. |
DOI: |
10.1002/ldr.2839 |
Idioma: |
Inglês |
Conteúdo: |
Sandy soils in tropical climates with low organic matter (OM) content result in degradation and fertility loss. It is important to note that humified OM accumulation and stabilization increases soil fertility. This study aimed to characterize humic acids (HAs) in sandy soils on an agroecological farm operating for more than 20years. The structures of the HA of two Planosols under a grazing (G) and crop rotation (R) management system and of an Acrisol under an agroforestry management system (AFS) were characterized using HA extracted from a local Organosol under cassava monoculture (M) as a structural reference. Lower C-HA/C-FA ratio in sandy soil reveals a slightly humified OM and higher E-4/E-6 ratio value in HA confirming lower aromatic structure condensation. The HA in Planosols (R and G) and Acrisols (AFS) are predominantly formed by C-Alq-O,C-N-, CAlq-O-, and CAlq-di-O structures closely related to the soil physical properties and preserved by interaction with the mineral fraction confirmed by O-H, Si-O stretching of kaolinite and hematite bands in FTIR spectroscopy. Management and vegetal carbon type (-20.65 parts per thousand AFS -C-3) or (-15.55 parts per thousand (G) and -17.82 parts per thousand (R) -C-4) had no effect on HA formation. Evolution of structural change in HA modeled by chemometric analyses showed that more recalcitrant structure characteristic in HA can enhance OM preservation in these sandy soils. This study elucidated the OM stabilization mechanisms of sandy soil HA, their relationship with soil properties and models structural changes for humified OM recovery and preservation, which contribute to increased fertility and agricultural production. MenosSandy soils in tropical climates with low organic matter (OM) content result in degradation and fertility loss. It is important to note that humified OM accumulation and stabilization increases soil fertility. This study aimed to characterize humic acids (HAs) in sandy soils on an agroecological farm operating for more than 20years. The structures of the HA of two Planosols under a grazing (G) and crop rotation (R) management system and of an Acrisol under an agroforestry management system (AFS) were characterized using HA extracted from a local Organosol under cassava monoculture (M) as a structural reference. Lower C-HA/C-FA ratio in sandy soil reveals a slightly humified OM and higher E-4/E-6 ratio value in HA confirming lower aromatic structure condensation. The HA in Planosols (R and G) and Acrisols (AFS) are predominantly formed by C-Alq-O,C-N-, CAlq-O-, and CAlq-di-O structures closely related to the soil physical properties and preserved by interaction with the mineral fraction confirmed by O-H, Si-O stretching of kaolinite and hematite bands in FTIR spectroscopy. Management and vegetal carbon type (-20.65 parts per thousand AFS -C-3) or (-15.55 parts per thousand (G) and -17.82 parts per thousand (R) -C-4) had no effect on HA formation. Evolution of structural change in HA modeled by chemometric analyses showed that more recalcitrant structure characteristic in HA can enhance OM preservation in these sandy soils. This study elucidated the OM stabilization mechanisms... Mostrar Tudo |
Palavras-Chave: |
Organic agriculture; Sandy soil; Soil preservation. |
Thesaurus NAL: |
humic acids; soil organic matter. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02571naa a2200289 a 4500 001 2087206 005 2018-10-30 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1002/ldr.2839$2DOI 100 1 $aGOMES, E. T. M. 245 $aEffects of farmed managements in sandy soils on composition and stabilization of soil humic substances.$h[electronic resource] 260 $c2018 520 $aSandy soils in tropical climates with low organic matter (OM) content result in degradation and fertility loss. It is important to note that humified OM accumulation and stabilization increases soil fertility. This study aimed to characterize humic acids (HAs) in sandy soils on an agroecological farm operating for more than 20years. The structures of the HA of two Planosols under a grazing (G) and crop rotation (R) management system and of an Acrisol under an agroforestry management system (AFS) were characterized using HA extracted from a local Organosol under cassava monoculture (M) as a structural reference. Lower C-HA/C-FA ratio in sandy soil reveals a slightly humified OM and higher E-4/E-6 ratio value in HA confirming lower aromatic structure condensation. The HA in Planosols (R and G) and Acrisols (AFS) are predominantly formed by C-Alq-O,C-N-, CAlq-O-, and CAlq-di-O structures closely related to the soil physical properties and preserved by interaction with the mineral fraction confirmed by O-H, Si-O stretching of kaolinite and hematite bands in FTIR spectroscopy. Management and vegetal carbon type (-20.65 parts per thousand AFS -C-3) or (-15.55 parts per thousand (G) and -17.82 parts per thousand (R) -C-4) had no effect on HA formation. Evolution of structural change in HA modeled by chemometric analyses showed that more recalcitrant structure characteristic in HA can enhance OM preservation in these sandy soils. This study elucidated the OM stabilization mechanisms of sandy soil HA, their relationship with soil properties and models structural changes for humified OM recovery and preservation, which contribute to increased fertility and agricultural production. 650 $ahumic acids 650 $asoil organic matter 653 $aOrganic agriculture 653 $aSandy soil 653 $aSoil preservation 700 1 $aBERBARA, R. L. L. 700 1 $aPEREIRA, M. G. 700 1 $aURQUIAGA, S. 700 1 $aTAVARES, O. C. H. 700 1 $aASSUNÇÃO, S. A. 700 1 $aZONTA, E. 700 1 $aAMARAL SOBRINHO, N. M. do 700 1 $aGARCPUAM A, C. 773 $tLand Degradation & Development$gv. 29, n. 1, p. 68-79, 2018.
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