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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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| 4. |  | BARBOSA, L. R.; VALERIO, J. R.; COSTA, L. M. da; PEREIRA, A. A.; NASCIMENTO, D. A.; OLIVEIRA, M. C. M. Seleção de acessos da gramínea forrageira Brachiaria (Griseb) resistentes à cigarrinha Mahanarva fimbriolata distant, 1909 (Hemiptera: cercopidae). In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 21., 2006, Recife. Entomologia: da academia à transferência de tecnologia: anais. Recife: SEB: UFRPE, 2006. Resumo ID:655-2| Tipo: Resumo em Anais de Congresso |
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| 6. | | BRIOSO, P. S. T.; KONKEL, S.; PIMENTEL, J. P.; NASCIMENTO, D. A.; MONTANO, H. G.; POZZER, L.; AVILA, A. C. de; SILVA, R. S. Imunodeteccao da estirpe do SPFMV oriundo do Rio de Janeiro e producao de ramas de batata-doce livres de virus. Horticultura Brasileira, Brasilia, v.14, n.1, p.75, maio 1996. Resumo.| Biblioteca(s): Embrapa Hortaliças. |
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| 7. | | CORDEIRO, EL. C. N.; RESENDE, J. T. V. de; SAGGIN JUNIOR, O. J.; NASCIMENTO, D A.; ZEIST, A. R.; FAVARO, R.; CÓRDOVA, K. R. V.; GABRIEL, A. Physiology of the production of strawberries inoculated with arbuscular mycorrhizal fungi. Semina: Ciências Agrárias, Londrina, v. 40, n. 6, suplemento 3, p. 3333-3344, 2019. Título em Português: Fisiologia da produção de morangueiros inoculados com fungos micorrízicos arbusculares| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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| 8. | | SANTOS, T. L.; BECCHI, L. K.; VIEIRA, L. C.; TEDESCO, F. G.; DOMINGUES, M. M.; NASCIMENTO, D. A.; BARBOSA, L. R.; WILCKEN, C. F. Teste de voo como critério de avaliação da qualidade de Cleruchoides noackae Lin & Huber (Hymenoptera: Mymaridae). In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 27.; CONGRESSO LATINO-AMERICANO DE ENTOMOLOGIA, 10., Gramado. Saúde, ambiente e agricultura: anais. Gramado: SEB, 2018. p. 434. Resumo.| Tipo: Resumo em Anais de Congresso |
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