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| Registros recuperados : 54 | |
| 2. |  | FRANCISCO, E. A. B.; ZANCANARO, L.; KAPPES, C.; LOPES, A. A. Adubação nitrogenada e fosfatada na cultura do algodoeiro em sistema de cultivo adensado. In: CONGRESSO BRASILEIRO DO ALGODÃO, 8.; COTTON EXPO, 1., 2011, São Paulo. Evolução da cadeia para construção de um setor forte: Anais. Campina Grande, PB: Embrapa Algodão, 2011. p.1820-1829| Biblioteca(s): Embrapa Algodão. |
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| 4. | | SILVA, A. P. da; LOPES, A. A.; BUSNELLO, C. E.; DIPP, C.; ZAMBONI, E.; MARTINELLI, G. Producao de alface (Lactuca sativa L.) em irrigacao por gotejamento e por sulcos. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 28., 2001, Londrina. Ciencia do solo: fator de produtividade competitiva com sustentabilidade. Resumos... Londrina: SBCS, 2001. p.257. Resumo.| Biblioteca(s): Embrapa Hortaliças. |
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| 8. | | LOPES, A. A. C.; REIS JÚNIOR, F. B.; MENDES, I. C.; SANTOS, A. B.; XAVIER, G. R.; BAPTISTA, M. J. Atividade da enzima beta-glicosidase em solo sob solarização e biofumigação. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 24., 2007, Brasília. Anais... Brasília: Sociedade Brasileira de Microbiologia, 2007. 1 CD-ROM.| Biblioteca(s): Embrapa Cerrados. |
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| 10. | | LOPES, A. A.; ANDRADE, R. G.; LOEBMANN, D. G. dos S. W.; CARVALHO, D. S.; LEIVAS, J. F. Avaliação espaço-temporal do Albedo de superfície no município de Maracaju, MS. In: CONGRESSO BRASILEIRO DE ECOLOGIA DE PAISAGENS, 2.; SIMPÓSIO SCGIS-BR, 2., 2012, Salvador, BA. Anais... Salvador, BA: IALE-BR, 2012. 1 p.| Biblioteca(s): Embrapa Territorial. |
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| 13. | | CANUTO, K. M.; LEAL, L. K. A. M.; LOPES, A. A.; COLEMAN, C. M.; FERREIRA, D.; SILVEIRA, E. R. Amburanins A and B from Amburana cearensis: Daphnodorin-type biflavonoids that modulate human neutrophil degranulation. Journal of the Brazilian Chemical Society, Campinas, v. 25, n. 4, p. 639-647, 2014.| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 14. | | LOPES, A. A.; DUENHA, T. V.; ANDRADE, R. G.; TEIXEIRA, A. H. de C.; LEIVAS, J. F. Análise espaçotemporal da evapotranspiração em áreas agrícolas do município de Maracaju, MS. In: CONGRESSO INTERINSTITUCIONAL DE INICIAÇÃO CIENTÍFICA, 8., 2014, Campinas. Anais... Campinas: IAC, 2014. 8 p.| Biblioteca(s): Embrapa Territorial. |
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| 17. | | TORO, D. C.; LOPES; A. A. H.; BARBER, C. B. de; PEREZ, S. B.; MARTINEZ, J.; GALLARDO, I. D. Criterios sobre la calidad del arroz en Cuba. In: CONFERENCIA INTERNACIONAL DE ARROZ PARA AMERICA LATINA Y EL CARIBE, 10., 1997, Acarigua, Venezuela. [Anais...]. [S.l.:s.n., 1997?]. paginacao irregular.| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 20. | | GONZATTO, M. P.; PETRY, H. B.; LOPES, A. A.; SCHNEIDER, L. A.; OLIVEIRA, R. P. de; SCHWARZ, S. F. Maturação de frutos do tangoreiro ´hada` enxertado sobre sete porta-enxertos no rio grande do sul. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 22., 2012, Bento Gonçalves. Anais... Bento Gonçalves: SBF, 2012.| Biblioteca(s): Embrapa Clima Temperado. |
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| Registros recuperados : 54 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
03/02/2016 |
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Data da última atualização: |
29/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
LOPES, A. A. de C.; SOUSA, D. M. G. de; REIS JUNIOR, F. B. dos; MENDES, I. de C. |
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Afiliação: |
André Alves de Castro Lopes, UnB; DJALMA MARTINHAO GOMES DE SOUSA, CPAC; FABIO BUENO DOS REIS JUNIOR, CPAC; IEDA DE CARVALHO MENDES, CPAC. |
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Título: |
Air-drying and long-term storage effects on b-glucosidase, acid phosphatase and arylsulfatase activities in a tropical Savannah Oxisol. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Applied Soil Ecology, v. 93, p. 68-77, 2015. |
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DOI: |
http://dx.doi.org/10.1016/j.apsoil.2015.04.001 |
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Idioma: |
Português |
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Conteúdo: |
Air-drying soil samples causes a rapid cessation of microbial activity and is a useful means of storing soil samples and standardizing experiments as moisture levels can be accurately controlled. In contrast to temperate soils, there is little information regarding the advantages and disadvantages of using field moist or air-dried soil samples in the assessment of enzyme activities in tropical soils. The aim of this study was to evaluate the effects of air-drying and a two-year storage period on b-glucosidase, acid phosphatase and arylsulfatase activities in soil samples from cultivated and non-cultivated clayey Oxisols from the Cerrado region. Cultivated soil samples (0?10 cm depth) were collected from 24 treatments in three long-term experiments and analyzed to determine their enzyme activities and soil organic carbon (SOC). These treatments presented a large range of extractable Mehlich-P values and cumulative corn and soybean yields. Non-cultivated soil samples from four nearby areas with native Cerrado vegetation were also included in the study. In the laboratory, soil samples were divided into two groups. In the first group, soil samples were separated, stored at 7 C at field moisture levels and sieved through a 4 mm sieve. The analyses were performed within 1 week after sampling. In the second group, soil samples were air-dried at room temperature for two weeks, sieved through a 2 mm sieve and stored for 2 years at room temperature. Average reductions of 26%, 53% and 72%, were observed in the activities of b-glucosidase, arylsulfatase and acid phosphatase in the air-dried long-term stored samples, in both cultivated and noncultivated Cerrado clayey Oxisols. Air-drying and long-term storage hardly changed the ranking of treatments for b-glucosidase, arylsulfatase and acid phosphatase. However, a reduction in the capacity to detect changes among treatments was observed for acid phosphatase, which prevents the recommendation of air-drying prior to its analyses. As long as the effects of air-drying upon soil enzymes activities are well established, this pretreatment can be used for b-glucosidase and arylsulfatase analyses in the Cerrado clayey Oxisols. MenosAir-drying soil samples causes a rapid cessation of microbial activity and is a useful means of storing soil samples and standardizing experiments as moisture levels can be accurately controlled. In contrast to temperate soils, there is little information regarding the advantages and disadvantages of using field moist or air-dried soil samples in the assessment of enzyme activities in tropical soils. The aim of this study was to evaluate the effects of air-drying and a two-year storage period on b-glucosidase, acid phosphatase and arylsulfatase activities in soil samples from cultivated and non-cultivated clayey Oxisols from the Cerrado region. Cultivated soil samples (0?10 cm depth) were collected from 24 treatments in three long-term experiments and analyzed to determine their enzyme activities and soil organic carbon (SOC). These treatments presented a large range of extractable Mehlich-P values and cumulative corn and soybean yields. Non-cultivated soil samples from four nearby areas with native Cerrado vegetation were also included in the study. In the laboratory, soil samples were divided into two groups. In the first group, soil samples were separated, stored at 7 C at field moisture levels and sieved through a 4 mm sieve. The analyses were performed within 1 week after sampling. In the second group, soil samples were air-dried at room temperature for two weeks, sieved through a 2 mm sieve and stored for 2 years at room temperature. Average reductions of 26%, 53% and ... Mostrar Tudo |
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Palavras-Chave: |
Enzymatic analysis; Soil enzyme; Soil storage technique. |
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Thesaurus NAL: |
soil conservation; soil quality. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02941naa a2200229 a 4500
001 2035990
005 2016-02-29
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.apsoil.2015.04.001$2DOI
100 1 $aLOPES, A. A. de C.
245 $aAir-drying and long-term storage effects on b-glucosidase, acid phosphatase and arylsulfatase activities in a tropical Savannah Oxisol.
260 $c2015
520 $aAir-drying soil samples causes a rapid cessation of microbial activity and is a useful means of storing soil samples and standardizing experiments as moisture levels can be accurately controlled. In contrast to temperate soils, there is little information regarding the advantages and disadvantages of using field moist or air-dried soil samples in the assessment of enzyme activities in tropical soils. The aim of this study was to evaluate the effects of air-drying and a two-year storage period on b-glucosidase, acid phosphatase and arylsulfatase activities in soil samples from cultivated and non-cultivated clayey Oxisols from the Cerrado region. Cultivated soil samples (0?10 cm depth) were collected from 24 treatments in three long-term experiments and analyzed to determine their enzyme activities and soil organic carbon (SOC). These treatments presented a large range of extractable Mehlich-P values and cumulative corn and soybean yields. Non-cultivated soil samples from four nearby areas with native Cerrado vegetation were also included in the study. In the laboratory, soil samples were divided into two groups. In the first group, soil samples were separated, stored at 7 C at field moisture levels and sieved through a 4 mm sieve. The analyses were performed within 1 week after sampling. In the second group, soil samples were air-dried at room temperature for two weeks, sieved through a 2 mm sieve and stored for 2 years at room temperature. Average reductions of 26%, 53% and 72%, were observed in the activities of b-glucosidase, arylsulfatase and acid phosphatase in the air-dried long-term stored samples, in both cultivated and noncultivated Cerrado clayey Oxisols. Air-drying and long-term storage hardly changed the ranking of treatments for b-glucosidase, arylsulfatase and acid phosphatase. However, a reduction in the capacity to detect changes among treatments was observed for acid phosphatase, which prevents the recommendation of air-drying prior to its analyses. As long as the effects of air-drying upon soil enzymes activities are well established, this pretreatment can be used for b-glucosidase and arylsulfatase analyses in the Cerrado clayey Oxisols.
650 $asoil conservation
650 $asoil quality
653 $aEnzymatic analysis
653 $aSoil enzyme
653 $aSoil storage technique
700 1 $aSOUSA, D. M. G. de
700 1 $aREIS JUNIOR, F. B. dos
700 1 $aMENDES, I. de C.
773 $tApplied Soil Ecology$gv. 93, p. 68-77, 2015.
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