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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
20/12/2004 |
Data da última atualização: |
30/05/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
OLIVEIRA, C.; SCOTTI, M.; PURCINO, H.; VASCONCELLOS, C. A.; MARRIEL, I. E.; SA, N. M. H. |
Afiliação: |
EMBRAPA-CNPMS; IVANILDO EVODIO MARRIEL, CNPMS. |
Título: |
Decomposition of Arachis pintoi litter intercropped with forage grass in "Cerrado" soil in the dry and wet seasons. |
Ano de publicação: |
2002 |
Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v. 36, n. 6, p. 405-410, 2002. |
Idioma: |
Inglês |
Conteúdo: |
In tropical pastures which are generally under utilized, nutrients are returned to the soil mainly via litter decomposition. However little is known about the decomposition of tropical forage species in pastures. In this work the dynamics of Arachis pintoi litter decomposition was studied, in the "Cerrado" soil in Sete Lagoas region, state of Minas Gerais, Brazil. Decomposition of this species was analyzed as a pure stand or intercropped with the grass Cynodon nlenfluensis in dry and wet seasons. Litter bags containing the legume, grass or a mixture of both species were incubated to estimate the decomposition rate and microorganism colonization. Decomposition constants (K) and litter half-lives (T1/2) were estimated by an exponential model whereas number of microorganisms in specific media was determined by plate dilution. Bacterial population increased when Arachis was added to Cynodon. The K of the grass was increased when A. pintoi litter was added, especially in monoculture grass plots. When A. pintoi was intercropped with the grass in the dry season 50% of N and P were released in approximately 130 days, and in the wet season, the equivalent release occurred in 20 days. The correlation between P released by litter decomposition and mass loss was always high and significant in both seasons in mixed and A. pintoi litters. This combination of litters was the most favorable for colonization by P-solubilizing microorganisms. In support of previous work, these results suggest that the use of A. pintoi contributes to the recovery of degraded pastures. MenosIn tropical pastures which are generally under utilized, nutrients are returned to the soil mainly via litter decomposition. However little is known about the decomposition of tropical forage species in pastures. In this work the dynamics of Arachis pintoi litter decomposition was studied, in the "Cerrado" soil in Sete Lagoas region, state of Minas Gerais, Brazil. Decomposition of this species was analyzed as a pure stand or intercropped with the grass Cynodon nlenfluensis in dry and wet seasons. Litter bags containing the legume, grass or a mixture of both species were incubated to estimate the decomposition rate and microorganism colonization. Decomposition constants (K) and litter half-lives (T1/2) were estimated by an exponential model whereas number of microorganisms in specific media was determined by plate dilution. Bacterial population increased when Arachis was added to Cynodon. The K of the grass was increased when A. pintoi litter was added, especially in monoculture grass plots. When A. pintoi was intercropped with the grass in the dry season 50% of N and P were released in approximately 130 days, and in the wet season, the equivalent release occurred in 20 days. The correlation between P released by litter decomposition and mass loss was always high and significant in both seasons in mixed and A. pintoi litters. This combination of litters was the most favorable for colonization by P-solubilizing microorganisms. In support of previous work, these results suggest... Mostrar Tudo |
Palavras-Chave: |
Cerrado soil; Grass and legume forage litter decomposition. |
Thesaurus Nal: |
Arachis pintoi; nutrients. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02304naa a2200229 a 4500 001 1488485 005 2018-05-30 008 2002 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA, C. 245 $aDecomposition of Arachis pintoi litter intercropped with forage grass in "Cerrado" soil in the dry and wet seasons.$h[electronic resource] 260 $c2002 520 $aIn tropical pastures which are generally under utilized, nutrients are returned to the soil mainly via litter decomposition. However little is known about the decomposition of tropical forage species in pastures. In this work the dynamics of Arachis pintoi litter decomposition was studied, in the "Cerrado" soil in Sete Lagoas region, state of Minas Gerais, Brazil. Decomposition of this species was analyzed as a pure stand or intercropped with the grass Cynodon nlenfluensis in dry and wet seasons. Litter bags containing the legume, grass or a mixture of both species were incubated to estimate the decomposition rate and microorganism colonization. Decomposition constants (K) and litter half-lives (T1/2) were estimated by an exponential model whereas number of microorganisms in specific media was determined by plate dilution. Bacterial population increased when Arachis was added to Cynodon. The K of the grass was increased when A. pintoi litter was added, especially in monoculture grass plots. When A. pintoi was intercropped with the grass in the dry season 50% of N and P were released in approximately 130 days, and in the wet season, the equivalent release occurred in 20 days. The correlation between P released by litter decomposition and mass loss was always high and significant in both seasons in mixed and A. pintoi litters. This combination of litters was the most favorable for colonization by P-solubilizing microorganisms. In support of previous work, these results suggest that the use of A. pintoi contributes to the recovery of degraded pastures. 650 $aArachis pintoi 650 $anutrients 653 $aCerrado soil 653 $aGrass and legume forage litter decomposition 700 1 $aSCOTTI, M. 700 1 $aPURCINO, H. 700 1 $aVASCONCELLOS, C. A. 700 1 $aMARRIEL, I. E. 700 1 $aSA, N. M. H. 773 $tBiology and Fertility of Soils, Berlin$gv. 36, n. 6, p. 405-410, 2002.
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6. | | DUARTE, N. de F.; KARAM, D.; SÁ, N.; MUZZI, S. M. R. Avaliação de métodos de manejo de plantas daninhas na cultura de Eucalyptus camaldulensis. In: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 26., CONGRESO DE LA ASOCIACIÓN LATINO-AMERICANA DE MALEZAS, 18., 2008, Ouro Preto. Trabalhos... Sete Lagoas: SBCPD: Embrapa Milho e Sorgo, 2008. 1 CD-ROM.Tipo: Artigo em Anais de Congresso / Nota Técnica |
Biblioteca(s): Embrapa Milho e Sorgo. |
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12. | | PINTO, P. P.; RAPOSEIRAS, R.; MACEDO, A. M.; SELDIN, L.; PAVA, E.; SA, N. M. H. Effects of high temperature on survival, symbiotic performance and genomic modifications of bean nodulating Rhizobium strains. Revista de Microbiologia, São Paulo, v. 29, n. 4, p. 295-300, 1998.Biblioteca(s): Embrapa Milho e Sorgo. |
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17. | | DUARTE, N. F.; KARAM, D.; SA, N.; CRUZ, M. B.; SCOTTI, M. R. M. Seletividade de herbicidas sobre Myracrodruon urundeuva (aroeira). Planta Daninha, Viçosa, MG, v. 24, n. 2, p. 329-337, 2006.Biblioteca(s): Embrapa Milho e Sorgo. |
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18. | | OLIVEIRA, C.; SCOTTI, M.; PURCINO, H.; VASCONCELLOS, C. A.; MARRIEL, I. E.; SA, N. M. H. Decomposition of Arachis pintoi litter intercropped with forage grass in "Cerrado" soil in the dry and wet seasons. Biology and Fertility of Soils, Berlin, v. 36, n. 6, p. 405-410, 2002.Tipo: Artigo em Periódico Indexado |
Biblioteca(s): Embrapa Milho e Sorgo. |
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20. | | DUARTE, N. F.; BUCEK, E. U.; KARAM, D.; SÁ, N.; SCOTTI, M. R. M. Mixed field plantation of native and exotic species in semi-arid Brazil. Australian Journal of Botany, Victoria, v. 54, n. 8, p. 755-764, 2006.Tipo: Artigo em Periódico Indexado | Circulação/Nível: -- - -- |
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