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| Registros recuperados : 273 | |
| 84. |  | PEREIRA NETO, J. V.; MENDES, I. de C.; REIS JUNIOR, F. B. dos. Variacao mensal dos teores de carbono da biomassa microbiana num nivel de cerrado sob plantio direto, plantio convencional e vegetacao nativa. In: REUNIAO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 25.; REUNIAO BRASILEIRA SOBRE MICORRIZAS, 9.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 7.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 4., 2002, Rio de Janeiro. FertBio 2002: agricultura: bases ecologicas para o desenvolvimento social e economico sustentado. Rio de Janeiro: [s. n.], 2002.| Biblioteca(s): Embrapa Cerrados. |
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| 85. | | PEREIRA NETO, J. V.; MENDES, I. de C.; REIS JÚNIOR, F. B. dos. Variação do carbono prontamente mineralizável e do C da biomassa microbiana, em latossolos de cerrado, sob plantio direto, plantio convencional e cerrado nativo. In: CONGRESSO DE INICIAÇÃO CIENTÍFICA DA UNIVERSIDADE DE BRASÍLIA, 8., 2002, Brasília, DF. Anais. Brasília: UnB, 2002. 1 CD-ROM.| Biblioteca(s): Embrapa Cerrados. |
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| 86. | | BAPTISTA, M. J.; MENDONÇA, J. L. de; OLIVEIRA, A. R. de; REIS JÚNIOR, F. B. dos. Uso da solarização associada à biofumigação para a desinfestação do solo e de mudas enxertadas no controle de murcha bacteriana do tomateiro no campo. Horticultura Brasileira, Brasília, DF, v. 27, n. 2, p. S3094-S3101, ago. 2009. CD-ROM. Suplemento. Trabalho apresentado no 49. Congresso Brasileiro de Olericultura, Águas de Lindóia, SP.| Biblioteca(s): Embrapa Hortaliças. |
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| 87. | | BAPTISTA, M. J.; MENDONÇA, J. L. de; OLIVEIRA, A. R. de; REIS JÚNIOR, F. B. dos. Uso da solarização associada à biofumigação para a desinfestação do solo e de mudas enxertadas no controle da murcha bacteriana do tomateiro no campo. Horticultura Brasileira, Brasília, v. 27, n. 2, p. S3094-S3101, ago. 2009. Suplemento. Trabalho apresentado no 49º Congresso Brasileiro de Olericultura, 2009, Águas de Lindóia.| Biblioteca(s): Embrapa Cerrados. |
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| 89. | | PIRES, R. de C.; REIS JUNIOR, F. B. dos; ZILLI, J. E.; JAMES, E. K.; SIMON, M. F. Associação simbiótica entre seis espécies do gênero mimosa e bactérias diazotróficas em solos com diferentes características. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CERRADOS. Jovens talentos 2016: resumos. Planaltina, DF: Embrapa Cerrados, 2016. 99 p. p. 41 (Embrapa Cerrados. Documentos, 334). Comissão organizadora: SOUZA, K. W. de; FALEIRO, A. S. G.; SALGUES, A. L. M.; ALONSO, A. M.; CARVALHO, A. M. de; LOBATO, B. R.; CRUZ, C. V.; SOUSA, E. dos S.; PELEGRINELLI, F.; SOARES, J. P. G.; LIMA, J. E. F. W.; ARBUES, J. F. de O.;...| Biblioteca(s): Embrapa Cerrados. |
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| 90. | | MENDES, I. de C.; REIS JÚNIOR, F. B. dos; HUNGRIA, M.; SOUSA, D. M. G. de; CAMPO, R. J. Adubação nitrogenada suplementar tardia em soja cultivada em latossolos do Cerrado. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 8, p. 1053-1060, 2008.| Biblioteca(s): Embrapa Cerrados; Embrapa Soja; Embrapa Unidades Centrais. |
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| 94. | | REIS JUNIOR, F. B. dos; MACHADO, C. T. T.; MACHADO, A. T.; MENDES, I. de C.; ROLIM, L. Bacterias diazotroficas e fungos microrrizicos associados a diferentes variedades de milho sob niveis de adubacao nitrogenada. In: REUNIAO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 26.; REUNIAO BRASILEIRA SOBRE MICORRIZAS, 10.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 8.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 5., 2004, Lages, SC. FertBio 2004: avaliacao das conquistas: bases para estrategias futuras. Lages: [s. n.], 2004. nao paginado.| Biblioteca(s): Embrapa Cerrados. |
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| 97. | | MENDES, I. de C.; REIS JUNIOR, F. B. dos; CHAER, G. M.; TORESANI, S.; FERRERAS, L. A. Bioindicadores de calidad de suelo: utopia o realidad? In: CONGRESSO ARGENTINO DE LA CIENCIA DEL SUELO, 22., 2010, Rosario, AR. El suelo pilar de la agroindustria en la pampa Argentina: trabajos, comunicaciones, ponencias, conferencias, mesas redondas y taller interlaboratorio. Rosario: Associación Argentina de la Ciencia del Suelo, 2010.| Biblioteca(s): Embrapa Agrobiologia. |
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| 98. | | MEGÍAS SAAVEDRA, M. E.; REIS JUNIOR, F. B. dos; MOYANO, I.; HUNGRIA, M.; OLLERO MÁRQUEZ, F. J.; MEGÍAS, M. Aplicaciones agronómicas de una nueva especie del género pantoea aislada de plantas de arroz. In: REUNIÃO LATINOAMERICANA DE RIZOBIOLOGIA - RELAR, 27., 2016, Londrina. Fortalecendo as parcerias Sul-Sul: anais. Curitiba: SBCS-NEPAR, 2016. p. 226. Editores: Mariangela Hungria, Douglas Fabiano Gomes, Arnaldo Colozzi Filho.| Biblioteca(s): Embrapa Soja. |
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| 99. | | REIS JÚNIOR, F. B. dos; MACHADO, C. T. de T.; MACHADO, A. T.; ROLIM, L. F. L. S.; SODEK, L. Comportamento de dois genótipos de milho sob diferentes doses e formas de nitrogênio e inoculação com Azospirillum amazonense em um ensaio de casa-de-vegetação. In: CONGRESSO BRASILEIRO DE MICROBIOLOGIA, 23., 2005, Santos, SP. Resumos. Santos: Sociedade Brasileira de Microbiologia, 2005. 1 CD-ROM.| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 273 | |
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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. |
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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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