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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
26/12/2011 |
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Data da última atualização: |
26/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
XAVIER, F. A. da S.; ALMEIDA, E. F.; CARDOSO, I. M.; MENDONCA, E. de S. |
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Afiliação: |
FRANCISCO ALISSON DA SILVA XAVIER, CNPMF; EVERSON F. ALMEIDA; IRENE M. CARDOSO; EDUARDO DE SA MENDONCA. |
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Título: |
Soil phosphorus distribution in sequentially extracted fractions in tropical coffee-agroecosystems in the Atlantic Forest biome, Southeastern Brazil. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, 2011, v. 89, n. 1, p. 31-44. |
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Idioma: |
Inglês |
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Conteúdo: |
Phosphorus (P) deficiency is one of the most important constraints to food production, particularly in tropical Oxisols. This study aimed to characterize the inorganic and organic P (Pi and Po) fractions in the soil in three smallholding coffee cultivation fields managed under either agroforestry (AGF) or full sun (FSC) agroecosystems. The work was carried out in areas situated at the municipalities of Divino and Araponga in the Zona da Mata in the state of Minas Gerais, southeastern Brazil. Soil P forms including H2O-Pi; NaHCO3-Pi,Po; NaOH-Pi,Po; diluted Cl-Pi; concentrate HCl-Pi,Po and Residual-P were sequentially extracted in samples from 0 to 5 and 5 to 10-cm soil layers. Together, H2O-Pi and NaHCO3-Pi accounted on average for only 4% of soil total P in the cultivated soils. HClconc.-Pi ranged from 142.8 to 372.4 mg kg-1 being the predominant Pi fraction. AGF systems promoted an increment of 8% in the NaHCO3-Po fraction in relation to the FSC systems in the upper soil layer. The AGF systems increased HClconc.-Po pool in relation to the FSC systems in Divino and Araponga(I) soils, indicating that agroforestry is an important management strategy to increase bioavailable P and for the maintenance of organic P pool. The distribution of inorganic and organic P pools varied among the different study sites, showing that P cycling depends on the inherent characteristic of each agroecosystem. The availability of P to plants in coffee-agroforestry fields is directly associated with the cycling of the organic P pool. MenosPhosphorus (P) deficiency is one of the most important constraints to food production, particularly in tropical Oxisols. This study aimed to characterize the inorganic and organic P (Pi and Po) fractions in the soil in three smallholding coffee cultivation fields managed under either agroforestry (AGF) or full sun (FSC) agroecosystems. The work was carried out in areas situated at the municipalities of Divino and Araponga in the Zona da Mata in the state of Minas Gerais, southeastern Brazil. Soil P forms including H2O-Pi; NaHCO3-Pi,Po; NaOH-Pi,Po; diluted Cl-Pi; concentrate HCl-Pi,Po and Residual-P were sequentially extracted in samples from 0 to 5 and 5 to 10-cm soil layers. Together, H2O-Pi and NaHCO3-Pi accounted on average for only 4% of soil total P in the cultivated soils. HClconc.-Pi ranged from 142.8 to 372.4 mg kg-1 being the predominant Pi fraction. AGF systems promoted an increment of 8% in the NaHCO3-Po fraction in relation to the FSC systems in the upper soil layer. The AGF systems increased HClconc.-Po pool in relation to the FSC systems in Divino and Araponga(I) soils, indicating that agroforestry is an important management strategy to increase bioavailable P and for the maintenance of organic P pool. The distribution of inorganic and organic P pools varied among the different study sites, showing that P cycling depends on the inherent characteristic of each agroecosystem. The availability of P to plants in coffee-agroforestry fields is directly associated wit... Mostrar Tudo |
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Palavras-Chave: |
Atlantic Forest biome; Biological P cycle. |
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Thesaurus Nal: |
soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02192naa a2200193 a 4500
001 1910908
005 2023-05-26
008 2011 bl uuuu u00u1 u #d
100 1 $aXAVIER, F. A. da S.
245 $aSoil phosphorus distribution in sequentially extracted fractions in tropical coffee-agroecosystems in the Atlantic Forest biome, Southeastern Brazil.$h[electronic resource]
260 $c2011
520 $aPhosphorus (P) deficiency is one of the most important constraints to food production, particularly in tropical Oxisols. This study aimed to characterize the inorganic and organic P (Pi and Po) fractions in the soil in three smallholding coffee cultivation fields managed under either agroforestry (AGF) or full sun (FSC) agroecosystems. The work was carried out in areas situated at the municipalities of Divino and Araponga in the Zona da Mata in the state of Minas Gerais, southeastern Brazil. Soil P forms including H2O-Pi; NaHCO3-Pi,Po; NaOH-Pi,Po; diluted Cl-Pi; concentrate HCl-Pi,Po and Residual-P were sequentially extracted in samples from 0 to 5 and 5 to 10-cm soil layers. Together, H2O-Pi and NaHCO3-Pi accounted on average for only 4% of soil total P in the cultivated soils. HClconc.-Pi ranged from 142.8 to 372.4 mg kg-1 being the predominant Pi fraction. AGF systems promoted an increment of 8% in the NaHCO3-Po fraction in relation to the FSC systems in the upper soil layer. The AGF systems increased HClconc.-Po pool in relation to the FSC systems in Divino and Araponga(I) soils, indicating that agroforestry is an important management strategy to increase bioavailable P and for the maintenance of organic P pool. The distribution of inorganic and organic P pools varied among the different study sites, showing that P cycling depends on the inherent characteristic of each agroecosystem. The availability of P to plants in coffee-agroforestry fields is directly associated with the cycling of the organic P pool.
650 $asoil
653 $aAtlantic Forest biome
653 $aBiological P cycle
700 1 $aALMEIDA, E. F.
700 1 $aCARDOSO, I. M.
700 1 $aMENDONCA, E. de S.
773 $tNutrient Cycling in Agroecosystems, 2011$gv. 89, n. 1, p. 31-44.
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