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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
18/02/1998 |
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Data da última atualização: |
20/05/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SELLES, F.; KOCHHANN, R. A.; DENARDIN, J. E.; ZENTNER, R. P.; FAGANELLO, A. |
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Afiliação: |
AGRICULTURE AND AGRI-FOOD CANADA, SEMIARID PRAIRIE AGRICULTURAL RESEARCH CENTER; RAINOLDO ALBERTO KOCHHANN, CNPT; JOSE ELOIR DENARDIN, CNPT; ANTONIO FAGANELLO, CNPT. |
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Título: |
Distribution of phosphorus fractions in a Brazilian oxisol under different tillage systems. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Soil & Tillage Research, Amsterdam, v. 44, n. 1/2, p. 23-34, Dec. 1997. |
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ISSN: |
0167-1987 |
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Idioma: |
Inglês |
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Conteúdo: |
Changes in residue management resulting from adoption of conservation tillage systems have the potential to alter the concentration and distribution of phosphorus (P) in the soil surface. The objective of this study was to determine the effect of methods of tillage management on the distribution and concentration of organic and inorganic forms of soil P near the soil surface (O-10 cm depth) for an Oxisol in southern Brazil. The tillage systems included zero tillage (ZT) (seeding directly onto the standing stubble of the previous crop), minimum tillage (MT) (seeding the crop after chisel plowing to 15-cm depth and disk harrowing to 7.5 cm), or conventional tillage (CT) (seeding after disk plowing to 2.0-cm depth with nearly total soil inversion plus two disk harrowings to lo-cm depth). After a period of five years, reducing tillage through adoption of MT or ZT practices increased total P in the surface 10 cm by 15% when compared to CT. Although there were no differences in amounts of total P between MT and ZT systems, under ZT management larger amounts of labile organic and inorganic forms of P accumulated close to the soil surface, followed by a reduction below the 6-cm depth. Under MT, the labile organic and inorganic forms of P were uniformly distributed within the surface 10 cm of soil. The accumulation of high levels of labile P near the soil surface under ZT followed a distribution pattern similar to the accumulation of organic residues in the soil. This would help explain why other workers have found increased P uptake by crops grown under ZT, and why more available P can be extracted by common soil testing methods from the surface 7 to 10 cm of soils under ZT than under CT management. MenosChanges in residue management resulting from adoption of conservation tillage systems have the potential to alter the concentration and distribution of phosphorus (P) in the soil surface. The objective of this study was to determine the effect of methods of tillage management on the distribution and concentration of organic and inorganic forms of soil P near the soil surface (O-10 cm depth) for an Oxisol in southern Brazil. The tillage systems included zero tillage (ZT) (seeding directly onto the standing stubble of the previous crop), minimum tillage (MT) (seeding the crop after chisel plowing to 15-cm depth and disk harrowing to 7.5 cm), or conventional tillage (CT) (seeding after disk plowing to 2.0-cm depth with nearly total soil inversion plus two disk harrowings to lo-cm depth). After a period of five years, reducing tillage through adoption of MT or ZT practices increased total P in the surface 10 cm by 15% when compared to CT. Although there were no differences in amounts of total P between MT and ZT systems, under ZT management larger amounts of labile organic and inorganic forms of P accumulated close to the soil surface, followed by a reduction below the 6-cm depth. Under MT, the labile organic and inorganic forms of P were uniformly distributed within the surface 10 cm of soil. The accumulation of high levels of labile P near the soil surface under ZT followed a distribution pattern similar to the accumulation of organic residues in the soil. This would help expl... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Disponibilidade; Distribuição. |
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Thesagro: |
Fósforo; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02409naa a2200241 a 4500
001 1824269
005 2025-05-20
008 1997 bl uuuu u00u1 u #d
022 $a0167-1987
100 1 $aSELLES, F.
245 $aDistribution of phosphorus fractions in a Brazilian oxisol under different tillage systems.$h[electronic resource]
260 $c1997
520 $aChanges in residue management resulting from adoption of conservation tillage systems have the potential to alter the concentration and distribution of phosphorus (P) in the soil surface. The objective of this study was to determine the effect of methods of tillage management on the distribution and concentration of organic and inorganic forms of soil P near the soil surface (O-10 cm depth) for an Oxisol in southern Brazil. The tillage systems included zero tillage (ZT) (seeding directly onto the standing stubble of the previous crop), minimum tillage (MT) (seeding the crop after chisel plowing to 15-cm depth and disk harrowing to 7.5 cm), or conventional tillage (CT) (seeding after disk plowing to 2.0-cm depth with nearly total soil inversion plus two disk harrowings to lo-cm depth). After a period of five years, reducing tillage through adoption of MT or ZT practices increased total P in the surface 10 cm by 15% when compared to CT. Although there were no differences in amounts of total P between MT and ZT systems, under ZT management larger amounts of labile organic and inorganic forms of P accumulated close to the soil surface, followed by a reduction below the 6-cm depth. Under MT, the labile organic and inorganic forms of P were uniformly distributed within the surface 10 cm of soil. The accumulation of high levels of labile P near the soil surface under ZT followed a distribution pattern similar to the accumulation of organic residues in the soil. This would help explain why other workers have found increased P uptake by crops grown under ZT, and why more available P can be extracted by common soil testing methods from the surface 7 to 10 cm of soils under ZT than under CT management.
650 $aFósforo
650 $aSolo
653 $aBrasil
653 $aDisponibilidade
653 $aDistribuição
700 1 $aKOCHHANN, R. A.
700 1 $aDENARDIN, J. E.
700 1 $aZENTNER, R. P.
700 1 $aFAGANELLO, A.
773 $tSoil & Tillage Research, Amsterdam$gv. 44, n. 1/2, p. 23-34, Dec. 1997.
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| 3. |  | RAMOS, N. P.; LUCHIARI JUNIOR, A.; BATISTA, E. R.; ANDRADE JÚNIOR, A. S. de; FREITAS NETO, M. de A. Diagnóstico agroambiental rápido dos setores de produção e processamento da cana-de-açucar nos estados do Maranhão e Piauí. In: CONGRESSO NACIONAL DA SOCIEDADE DOS TÉCNICOS AÇUCAREIROS E ALCOOLEIROS DO BRASIL, STAB, 9., 2008, Maceió. Anais... Maceió: STAB, 2008. p. 788-793| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 5. | | RAMOS, N. P.; LUCHIARI JUNIOR, A.; BATISTA, E. R.; ANDRADE JUNIOR, A. S. de; FREITAS NETO, M. de A. Diagnóstico agroambiental rápido dos setores de produção e processamento da cana-de-açúcar nos estados do Maranhão e Piauí. In: STAB: Açúcar, álcool e subprodutos, v.27, n.2, p.34, 2008. Reumos do 9. Congresso Nacional da STAB, 2008, Maceió.| Tipo: Resumo em Anais de Congresso |
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| 6. | | FREITAS NETO, M. de A. F.; FELIX, J. P. L.; ARTHAUD, I. D. B.; LEITÃO, R. C.; SANTAELLA, S. T. Remoção de compostos nitrogenados de águas residuárias de refinarias de petróleo através de reatores biológicos com fungos. Revista Tecnologia, Fortaleza, v.28, n.1, p.85-96, 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - C |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 7. | | VEDOVOTO, G. L.; ALMEIDA, M. J. de O.; FREITAS NETO, M. de A.; GAZZOLA, R.; AVILA, A. F. D.; GERHARDT, I. V. Linha de base para avaliação de impactos de variedades biofortificadas: produção e autoconsumo de alimentos no Piauí. In: REUNIÃO DE BIOFORTIFICAÇÃO NO BRASIL, 5., 2015, São Paulo. [Anais...]. Brasília, DF: Embrapa, 2015. Organização Embrapa Agroindústria de Alimentos. Editora técnica: Marília Regini Nutti| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte; Embrapa Unidades Centrais. |
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| 8. | | SILVA, K. M. L.; FREITAS NETO, M. de A.; SOUSA, N. S. de; MIRANDA, D. de S.; SANTOS, F. S. R. dos; GUIMARÃES, F. P. de A.; LEITE, L. F. C. Geoespacialização dos teores de fósforo e potássio em latossolo amarelo sob diferentes sistemas de preparo no cerrado piauiense. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG, 2011. 4 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 9. | | SILVA FILHO, J. V. da; SILVA, D. R. M. da; ARRUDA, F.; FREITAS NETO, M. de A.; CUNHA, J. R. da; SANTOS, F. S. R. dos; SILVA, K. M. L.; LEITE, L. F. C. Índice de manejo de carbono em latossolo vermelho amarelo sob plantio direto e convencional no cerrado piauiense. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG, 2011. 4 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 10. | | LEITAO, R. C.; ARAÚJO, A. M. de; SOUSA, O. L. de; FREITAS-NETO, M. de A.; VIANA, M. B.; BRITO, C. R. F. DE; SOUSA, A. B. de; ROSA, M. de F.; PINTO, G. A. S.; SANTAELLA, S. T. Tratamento biológico do líquido da casca do coco verde. Fortaleza: Embrapa Agroindústria Tropical, 2010. 123 p. (Embrapa Agroindústria Tropical. Boletim de Pesquisa e Desenvolvimento, 39).| Tipo: Boletim de Pesquisa e Desenvolvimento |
| Biblioteca(s): Embrapa Agroindústria Tropical; Embrapa Meio-Norte. |
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| Registros recuperados : 10 | |
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