| |
|
|
 | 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: |
24/10/2018 |
|
Data da última atualização: |
20/05/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SANTOS, C. A. dos; REZENDE, C. de P.; PINHEIRO, E. F. M.; PEREIRA, J. M.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. |
|
Afiliação: |
UFRRJ; CEPLAC, BA; UFRRJ; CEPLAC, BA; BRUNO JOSE RODRIGUES ALVES, CNPAB; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; ROBERT MICHAEL BODDEY, CNPAB. |
|
Título: |
Changes in soil carbon stocks after land-use change from native vegetation to pastures in the Atlantic Forest Region of Brazil. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Geoderma, v. 337, p. 394-401, 2018. |
|
Idioma: |
Português |
|
Conteúdo: |
Millions of hectares (ha) of the Atlantic forest of Brazil have been deforested and replaced by pastures, quite a large proportion of this in the last 60 years. There have been few studies on the impact of this land-use change on stocks of soil organic matter (SOM) only one study reported the state of vigour of the pastures. The aim of this study was to estimate the overall change in SOM stocks 16 years after the removal of forest vegetation in this biome in southern Bahia and the installation of pastures of Brachiaria brizantha fertilized with N and maintained under controlled grazing. Soil samples were taken for evaluation of density and texture and for analyses of C and N total and 13C abundance to a depth of 100 cm at 100 m intervals along four transects of 400 m from the pastures into the forest. Grazing was found not to have any significant effect on soil density (compaction). The live weight gain of the Nellore cattle on both cultivars of B. brizantha, fertilized with 120 kg N ha−1 yr−1 as urea during 12 years, was close to 500 kg ha−1 yr−1 . The gain in soil C was similar under the two grass cultivars, being approximately 15 Mg C ha−1 to a depth of 30 cm and 20 Mg C ha−1 to 100 cm. The 13C abundance data showed that the large gain in soil C was due to the slow decomposition of the forest-derived C (total loss 12.6 Mg C ha−1 over 16 years) and the large accumulation of C derived from the Brachiaria (total gain 43.2 Mg C ha−1 ). These results confirm the potential of productive Brachiaria pastures to accumulate soil C in a tropical climate with year-round rainfall. MenosMillions of hectares (ha) of the Atlantic forest of Brazil have been deforested and replaced by pastures, quite a large proportion of this in the last 60 years. There have been few studies on the impact of this land-use change on stocks of soil organic matter (SOM) only one study reported the state of vigour of the pastures. The aim of this study was to estimate the overall change in SOM stocks 16 years after the removal of forest vegetation in this biome in southern Bahia and the installation of pastures of Brachiaria brizantha fertilized with N and maintained under controlled grazing. Soil samples were taken for evaluation of density and texture and for analyses of C and N total and 13C abundance to a depth of 100 cm at 100 m intervals along four transects of 400 m from the pastures into the forest. Grazing was found not to have any significant effect on soil density (compaction). The live weight gain of the Nellore cattle on both cultivars of B. brizantha, fertilized with 120 kg N ha−1 yr−1 as urea during 12 years, was close to 500 kg ha−1 yr−1 . The gain in soil C was similar under the two grass cultivars, being approximately 15 Mg C ha−1 to a depth of 30 cm and 20 Mg C ha−1 to 100 cm. The 13C abundance data showed that the large gain in soil C was due to the slow decomposition of the forest-derived C (total loss 12.6 Mg C ha−1 over 16 years) and the large accumulation of C derived from the Brachiaria (total gain 43.2 Mg C haW... Mostrar Tudo |
|
Palavras-Chave: |
Brazilian biome; Native forest vegetation; Pastures soils; Soill organic matter. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02390naa a2200241 a 4500
001 2098106
005 2019-05-20
008 2018 bl uuuu u00u1 u #d
100 1 $aSANTOS, C. A. dos
245 $aChanges in soil carbon stocks after land-use change from native vegetation to pastures in the Atlantic Forest Region of Brazil.$h[electronic resource]
260 $c2018
520 $aMillions of hectares (ha) of the Atlantic forest of Brazil have been deforested and replaced by pastures, quite a large proportion of this in the last 60 years. There have been few studies on the impact of this land-use change on stocks of soil organic matter (SOM) only one study reported the state of vigour of the pastures. The aim of this study was to estimate the overall change in SOM stocks 16 years after the removal of forest vegetation in this biome in southern Bahia and the installation of pastures of Brachiaria brizantha fertilized with N and maintained under controlled grazing. Soil samples were taken for evaluation of density and texture and for analyses of C and N total and 13C abundance to a depth of 100 cm at 100 m intervals along four transects of 400 m from the pastures into the forest. Grazing was found not to have any significant effect on soil density (compaction). The live weight gain of the Nellore cattle on both cultivars of B. brizantha, fertilized with 120 kg N ha−1 yr−1 as urea during 12 years, was close to 500 kg ha−1 yr−1 . The gain in soil C was similar under the two grass cultivars, being approximately 15 Mg C ha−1 to a depth of 30 cm and 20 Mg C ha−1 to 100 cm. The 13C abundance data showed that the large gain in soil C was due to the slow decomposition of the forest-derived C (total loss 12.6 Mg C ha−1 over 16 years) and the large accumulation of C derived from the Brachiaria (total gain 43.2 Mg C ha−1 ). These results confirm the potential of productive Brachiaria pastures to accumulate soil C in a tropical climate with year-round rainfall.
653 $aBrazilian biome
653 $aNative forest vegetation
653 $aPastures soils
653 $aSoill organic matter
700 1 $aREZENDE, C. de P.
700 1 $aPINHEIRO, E. F. M.
700 1 $aPEREIRA, J. M.
700 1 $aALVES, B. J. R.
700 1 $aURQUIAGA, S.
700 1 $aBODDEY, R. M.
773 $tGeoderma$gv. 337, p. 394-401, 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Café. |
|
Data corrente: |
12/12/2023 |
|
Data da última atualização: |
12/12/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
ABREU, G. F.; ROSA, S. D. V. F. da; COELHO, S. V. B.; PEREIRA, C. C.; MALTA, M. R.; FANTAZZINI, T. B.; VILELA, A. L. |
|
Afiliação: |
GISELLE F. ABREU, CENTRO UNIVERSITÁRIO DO CERRADO PATROCÍNIO; STTELA DELLYZETE VEIGA F DA ROSA, CNPCa; STEFÂNIA V. B. COELHO, UNIVERSIDADE FEDERAL DE LAVRAS; CRISTIANE C. PEREIRA, UNIVERSIDADE FEDERAL DE LAVRAS; MARCELO R. MALTA, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; TATIANA B. FANTAZZINI, UNIVERSIDADE FEDERAL DE LAVRAS; AMANDA L. VILELA, UNIVERSIDADE FEDERAL DE LAVRAS. |
|
Título: |
Influence of hulling and storage conditions on maintaining coffee quality. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Anais da Academia Brasileira de Ciências, v. 95, n. 4, 2023. |
|
Páginas: |
12 p. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Storage is important in the coffee post-harvest. Determining the maximum period that coffee can remain storaged is important aiming to reduce losses in quality and, consequently, allow the producer to achieve maximum profitability. The aim was to determine the suitable storage period for natural and fully washed coffees, under different conditions. Beans were dried to 11% moisture content after dry processing (natural coffee, dry cherry coffee) and wet processing (parchment coffee, fully washed). Before storage, part of the coffee was hulled and part was not. The coffee was stored under refrigerated air (10ºC and 50% relative humidity) or in an environment at 25ºC. In the periods of 0, 3, 6, and 12 months, samples were taken for sensory, electrical conductivity and tetrazolium evaluation. Refrigerated environment favors conservation of sensory and physiological quality of the natural hulled coffee beans and fully washed coffee. Hulled beans of natural and fully washed coffee stored under refrigerated conditions have the initial quality conserved for up to 12 months and in non-controlled environmental, for up to 3 months. Mechanical damage caused by hulling, associated with the lack of tissue fruit parts, contributes to reduction hulled coffee quality in storage, regardless of the processing. |
|
Thesaurus NAL: |
Coffee beans; Deterioration; Mechanical damage. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1159552/1/Influence-Of-Hulling-And-Storage.pdf
|
|
Marc: |
LEADER 02004naa a2200241 a 4500
001 2159552
005 2023-12-12
008 2023 bl uuuu u00u1 u #d
100 1 $aABREU, G. F.
245 $aInfluence of hulling and storage conditions on maintaining coffee quality.$h[electronic resource]
260 $c2023
300 $a12 p.
520 $aStorage is important in the coffee post-harvest. Determining the maximum period that coffee can remain storaged is important aiming to reduce losses in quality and, consequently, allow the producer to achieve maximum profitability. The aim was to determine the suitable storage period for natural and fully washed coffees, under different conditions. Beans were dried to 11% moisture content after dry processing (natural coffee, dry cherry coffee) and wet processing (parchment coffee, fully washed). Before storage, part of the coffee was hulled and part was not. The coffee was stored under refrigerated air (10ºC and 50% relative humidity) or in an environment at 25ºC. In the periods of 0, 3, 6, and 12 months, samples were taken for sensory, electrical conductivity and tetrazolium evaluation. Refrigerated environment favors conservation of sensory and physiological quality of the natural hulled coffee beans and fully washed coffee. Hulled beans of natural and fully washed coffee stored under refrigerated conditions have the initial quality conserved for up to 12 months and in non-controlled environmental, for up to 3 months. Mechanical damage caused by hulling, associated with the lack of tissue fruit parts, contributes to reduction hulled coffee quality in storage, regardless of the processing.
650 $aCoffee beans
650 $aDeterioration
650 $aMechanical damage
700 1 $aROSA, S. D. V. F. da
700 1 $aCOELHO, S. V. B.
700 1 $aPEREIRA, C. C.
700 1 $aMALTA, M. R.
700 1 $aFANTAZZINI, T. B.
700 1 $aVILELA, A. L.
773 $tAnais da Academia Brasileira de Ciências$gv. 95, n. 4, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Café (CNPCa) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
