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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.; CARDOSO, I. M.; SOUTO, R. L.; LIMA. P. C. de; MENDONÇA, E. de S. |
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Afiliação: |
EDUARDO DA SILVA MATOS, CPAMT; IRENE MARIA CARDOSO, UFV; RENATA LÚCIA SOUTO, UFV; PAULO CÉSAR DE LIMA, EPAMIG; EDUARDO DE SÁ MENDONÇA, UFES. |
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Título: |
Characteristics, residue decomposition, and carbon mineralization of leguminous and spontaneous plants in coffee systems. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 42, p. 482-502, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: We investigated the chemical and biochemical composition, residue decomposition, and mineralization rate of leguminous (Cajanus cajan, Crotalaria spectabilis, and Lablab purpureus) and spontaneous vegetation in two experimental coffee systems in south- east Brazil. The nitrogen (N) content of the shoot biomass varied from 19.3 to 45.7 g kg?1 , and phosphorus (P) content ranged from 1.6 to 3.8 g kg?1 . C. cajan contained the greatest values of N and P, whereas spontaneous plants had the lowest values. In both areas, spontaneous vegetation had the greatest values of carbon (C) / P, C/N, polyphenol/N, and (lignin + polyphenol) / N ratios. Decomposition rate increased in the order C. cajan < C. spectabilis < L. purpureus < spontaneous vegetation. There was no correlation between the chemical and biochemical composition and the decom- position rate under field conditions. However, the cumulative carbon dioxide (C-CO2 ) produced by the residues under laboratory conditions was correlated positively with initial contents of N and P and negatively with polyphenol/N and (lignin + polyphe- nol) / N ratio (P < 0.01) throughout the sampling period. The low nutrient content, especially for N, of spontaneous vegetation is compensated by the greater decomposi- tion rate under natural conditions than that of introduced species. Management of the spontaneous plants is therefore an attractive alternative for sustainable agriculture. |
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Thesagro: |
Adubação verde; Cafeicultura; Cajanus Cajan; Leguminosa; Leguminosae; Mineralização. |
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Thesaurus Nal: |
Biogeochemical cycles; Crotalaria spectabilis; Fabaceae; Green manures; Lablab purpureus. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02381naa a2200301 a 4500
001 1904163
005 2011-10-26
008 2011 bl uuuu u00u1 u #d
100 1 $aMATOS, E. da S.
245 $aCharacteristics, residue decomposition, and carbon mineralization of leguminous and spontaneous plants in coffee systems.$h[electronic resource]
260 $c2011
520 $aAbstract: We investigated the chemical and biochemical composition, residue decomposition, and mineralization rate of leguminous (Cajanus cajan, Crotalaria spectabilis, and Lablab purpureus) and spontaneous vegetation in two experimental coffee systems in south- east Brazil. The nitrogen (N) content of the shoot biomass varied from 19.3 to 45.7 g kg?1 , and phosphorus (P) content ranged from 1.6 to 3.8 g kg?1 . C. cajan contained the greatest values of N and P, whereas spontaneous plants had the lowest values. In both areas, spontaneous vegetation had the greatest values of carbon (C) / P, C/N, polyphenol/N, and (lignin + polyphenol) / N ratios. Decomposition rate increased in the order C. cajan < C. spectabilis < L. purpureus < spontaneous vegetation. There was no correlation between the chemical and biochemical composition and the decom- position rate under field conditions. However, the cumulative carbon dioxide (C-CO2 ) produced by the residues under laboratory conditions was correlated positively with initial contents of N and P and negatively with polyphenol/N and (lignin + polyphe- nol) / N ratio (P < 0.01) throughout the sampling period. The low nutrient content, especially for N, of spontaneous vegetation is compensated by the greater decomposi- tion rate under natural conditions than that of introduced species. Management of the spontaneous plants is therefore an attractive alternative for sustainable agriculture.
650 $aBiogeochemical cycles
650 $aCrotalaria spectabilis
650 $aFabaceae
650 $aGreen manures
650 $aLablab purpureus
650 $aAdubação verde
650 $aCafeicultura
650 $aCajanus Cajan
650 $aLeguminosa
650 $aLeguminosae
650 $aMineralização
700 1 $aCARDOSO, I. M.
700 1 $aSOUTO, R. L.
700 1 $aLIMA. P. C. de
700 1 $aMENDONÇA, E. de S.
773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 42, p. 482-502, 2011.
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