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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
26/10/2011 |
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Data da última atualização: |
26/10/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATOS, E. da S.; MENDONÇA, E. de S.; CARDOSO, I. M.; LIMA, P. C. de; FREESE, D. |
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Afiliação: |
EDUARDO DA SILVA MATOS, CPAMT; EDUARDO DE SÁ MENDONÇA, UFES; IRENE MARIA CARDOSO, UFV; PAULO CÉSAR DE LIMA, EPAMIG; DIRK FREESE, Brandenburg University of Technology. |
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Título: |
Decomposition and nutrient release of leguminous plants in coffee agroforestry systems. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, Campinas, v. 35, p. 141-149, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Leguminous plants used as green manure are an important nutrient source for coffee plantations, especially for soils with low nutrient levels. Field experiments were conducted in the Zona da Mata of Minas Gerais State, Brazil to evaluate the decomposition and nutrient release rates of four leguminous species used as green manures (Arachis pintoi, Calopogonium mucunoides, Stizolobium aterrimum and Stylosanthes guianensis) in a coffee agroforestry system under two different climate conditions. The initial N contents in plant residues varied from 25.7 to 37.0 g kg-1 and P from 2.4 to 3.0 g kg-1. The lignin/N, lignin/polyphenol and (lignin+polyphenol)/N ratios were low in all residues studied. Mass loss rates were highest in the first 15 days, when 25 % of the residues were decomposed. From 15 to 30 days, the decomposition rate decreased on both farms. On the farm in Pedra Dourada (PD), the decomposition constant k increased in the order C. mucunoides < S. aterrimum < S. guianensis < A. pintoi. On the farm in Araponga (ARA), there was no difference in the decomposition rate among leguminous plants. The N release rates varied from 0.0036 to 0.0096 d-1. Around 32 % of the total N content in the plant material was released in the first 15 days. In ARA, the N concentration in the S. aterrimum residues was always significantly higher than in the other residues. At the end of 360 days, the N released was 78 % in ARA and 89 % in PD of the initial content. Phosphorus was the most rapidly released nutrient (k values from 0.0165 to 0.0394 d-1). Residue decomposition and nutrient release did not correlate with initial residue chemistry and biochemistry, but differences in climatic conditions between the two study sites modified the decomposition rate constants. MenosAbstract: Leguminous plants used as green manure are an important nutrient source for coffee plantations, especially for soils with low nutrient levels. Field experiments were conducted in the Zona da Mata of Minas Gerais State, Brazil to evaluate the decomposition and nutrient release rates of four leguminous species used as green manures (Arachis pintoi, Calopogonium mucunoides, Stizolobium aterrimum and Stylosanthes guianensis) in a coffee agroforestry system under two different climate conditions. The initial N contents in plant residues varied from 25.7 to 37.0 g kg-1 and P from 2.4 to 3.0 g kg-1. The lignin/N, lignin/polyphenol and (lignin+polyphenol)/N ratios were low in all residues studied. Mass loss rates were highest in the first 15 days, when 25 % of the residues were decomposed. From 15 to 30 days, the decomposition rate decreased on both farms. On the farm in Pedra Dourada (PD), the decomposition constant k increased in the order C. mucunoides < S. aterrimum < S. guianensis < A. pintoi. On the farm in Araponga (ARA), there was no difference in the decomposition rate among leguminous plants. The N release rates varied from 0.0036 to 0.0096 d-1. Around 32 % of the total N content in the plant material was released in the first 15 days. In ARA, the N concentration in the S. aterrimum residues was always significantly higher than in the other residues. At the end of 360 days, the N released was 78 % in ARA and 89 % in PD of the initial content. Phosphorus was the m... Mostrar Tudo |
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Palavras-Chave: |
Agrofloresta; Ciclagem de nutrientes. |
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Thesagro: |
Agrossilvicultura; Cafeicultura; Decomposição; Leguminosa; Leguminosae; Nutriente. |
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Thesaurus Nal: |
Agroforestry; Biogeochemical cycles; Fabaceae; Plant residues. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/44594/1/2011AP08.pdf
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Marc: |
LEADER 02693naa a2200313 a 4500
001 1904191
005 2011-10-26
008 2011 bl uuuu u00u1 u #d
100 1 $aMATOS, E. da S.
245 $aDecomposition and nutrient release of leguminous plants in coffee agroforestry systems.$h[electronic resource]
260 $c2011
520 $aAbstract: Leguminous plants used as green manure are an important nutrient source for coffee plantations, especially for soils with low nutrient levels. Field experiments were conducted in the Zona da Mata of Minas Gerais State, Brazil to evaluate the decomposition and nutrient release rates of four leguminous species used as green manures (Arachis pintoi, Calopogonium mucunoides, Stizolobium aterrimum and Stylosanthes guianensis) in a coffee agroforestry system under two different climate conditions. The initial N contents in plant residues varied from 25.7 to 37.0 g kg-1 and P from 2.4 to 3.0 g kg-1. The lignin/N, lignin/polyphenol and (lignin+polyphenol)/N ratios were low in all residues studied. Mass loss rates were highest in the first 15 days, when 25 % of the residues were decomposed. From 15 to 30 days, the decomposition rate decreased on both farms. On the farm in Pedra Dourada (PD), the decomposition constant k increased in the order C. mucunoides < S. aterrimum < S. guianensis < A. pintoi. On the farm in Araponga (ARA), there was no difference in the decomposition rate among leguminous plants. The N release rates varied from 0.0036 to 0.0096 d-1. Around 32 % of the total N content in the plant material was released in the first 15 days. In ARA, the N concentration in the S. aterrimum residues was always significantly higher than in the other residues. At the end of 360 days, the N released was 78 % in ARA and 89 % in PD of the initial content. Phosphorus was the most rapidly released nutrient (k values from 0.0165 to 0.0394 d-1). Residue decomposition and nutrient release did not correlate with initial residue chemistry and biochemistry, but differences in climatic conditions between the two study sites modified the decomposition rate constants.
650 $aAgroforestry
650 $aBiogeochemical cycles
650 $aFabaceae
650 $aPlant residues
650 $aAgrossilvicultura
650 $aCafeicultura
650 $aDecomposição
650 $aLeguminosa
650 $aLeguminosae
650 $aNutriente
653 $aAgrofloresta
653 $aCiclagem de nutrientes
700 1 $aMENDONÇA, E. de S.
700 1 $aCARDOSO, I. M.
700 1 $aLIMA, P. C. de
700 1 $aFREESE, D.
773 $tRevista Brasileira de Ciência do Solo, Campinas$gv. 35, p. 141-149, 2011.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
17/11/2005 |
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Data da última atualização: |
17/11/2005 |
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Autoria: |
FERREIRA, J. A.; MARTIN-NETO, L.; NASCIMENTO, O. R.; FORATO, L. A.; COLNAGO, L. A. |
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Título: |
Detecção de sítios hidrofóbicos em ácido húmico de solo por RPE e 13C RMN. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS-IHSS, 4., 2001, Viçosa. IHSS 2001: resumos de palestras e trabalhos apresentados. Viçosa: UFV-Departamento de Solos: Grupo Brasileiro da ISHH, 2001. p. 165-167. |
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Idioma: |
Português |
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Conteúdo: |
Tem sido mostrado que a sorção de grande parte de pesticidas apolares no solo está diretamente relacionada com a presença da matéria orgânica. |
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Palavras-Chave: |
AH; Pesticidas; SH. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00858naa a2200205 a 4500
001 1029123
005 2005-11-17
008 2001 bl --- 0-- u #d
100 1 $aFERREIRA, J. A.
245 $aDetecção de sítios hidrofóbicos em ácido húmico de solo por RPE e 13C RMN.
260 $c2001
520 $aTem sido mostrado que a sorção de grande parte de pesticidas apolares no solo está diretamente relacionada com a presença da matéria orgânica.
653 $aAH
653 $aPesticidas
653 $aSH
700 1 $aMARTIN-NETO, L.
700 1 $aNASCIMENTO, O. R.
700 1 $aFORATO, L. A.
700 1 $aCOLNAGO, L. A.
773 $tIn: CONGRESSO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS-IHSS, 4., 2001, Viçosa. IHSS 2001: resumos de palestras e trabalhos apresentados. Viçosa: UFV-Departamento de Solos: Grupo Brasileiro da ISHH, 2001. p. 165-167.
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Embrapa Instrumentação (CNPDIA) |
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