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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
21/09/2017 |
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Data da última atualização: |
18/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NORA, D. D.; AMADO, T. J. C.; NICOLOSO, R. da S.; MAZUCO, A. C. B.; PICCIN, M. |
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Afiliação: |
DOUGLAS DALLA NORA, Instituto Federal de FarroupilhA/Campus Alegrete; TELMO JORGE CARNEIRO AMADO, UFSM/Departamento de Solos; RODRIGO DA SILVEIRA NICOLOSO, CNPSA; ANTONIO CESAR BATISTA MAZUCO, UFSM/Curso de Agronomia; MARCIELI PICCIN, UFSM/Curso de Agronomia. |
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Título: |
Mitigation of the gradient of chemical properties in the rooting zone of dystrophic oxisols by gypsum and lime inputs under a no-till system. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 41, n. e0150541, 2017. |
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DOI: |
https://doi.org/10.1590/18069657rbcs20150541 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: Improvement of soil chemical properties in dystrophic Oxisols managed under long-term no-tillage system (NTS) with surface broadcast lime has been, frequently, restricted to a shallow topsoil layer. As a consequence, a sharply-defined chemical quality gradient is created, with deterioration from the surface towards deeper layers in Oxisols in southern Brazil. The aim of this study was to assess the temporal effects of gypsum, applied alone or in combination with lime, on Ca2+ content and Al3+ saturation in the rooting zone (RZ) (0.00-0.40 m). Four experiments were conducted from 2009 to 2014 in Typic Hapludox soils with distinct chemical qualities in the RZ managed under a long-term NTS (over 20 years) in Rio Grande do Sul (subtropical region). A randomized block experimental design with three replications was used. Experiments I and II were implemented in 2009, with treatments consisting of gypsum rates ranging from 0.0 to 6.5 Mg ha-1. The other two experiments were implemented in 2011. In experiment III, a split-plot design was used, with plots received gypsum rates ranging from 0.0 to 5.0 Mg ha-1, and the subplots received two lime rates (0.0 and 2.0 Mg ha-1). A split-plot design was also used in experiment IV, with plots receiving gypsum rates ranging from 0.0 to 6.0 Mg ha-1, and subplots receiving four lime rates, ranging from 0.0 to 4.8 Mg ha-1. Soil samples were stratified in layers at depth from 0.00 to 0.60 m and taken during the period of the experiment. The use of gypsum increased the Ca2+ and SO4 2−-S contents, proportional to the rate applied, and lowered Al3+ saturation throughout the soil profile evaluated. However, an increase in base saturation of the subsoil (0.25-0.60 m layer) was only observed at high rates of gypsum (>5.0 Mg ha-1) in the medium-term and through accumulation of a high rainfall volume. A faster and more pronounced effect of subsoil improvement was observed when the chemical quality of the topsoil layer was already high and when gypsum and lime were applied in combination. Greater improvement in subsoil chemical quality induced by gypsum, alone or in combination with lime, was found in a period exceeding 30 months (Experiments III and IV), remaining for up to 54 months (Experiments I and II). The combination of gypsum withlime was an effective strategy to increase vertical movement of bases in the RZ, mitigating the gradient of chemical quality in dystrophic Oxisol, avoiding discontinuity in the NTS. MenosABSTRACT: Improvement of soil chemical properties in dystrophic Oxisols managed under long-term no-tillage system (NTS) with surface broadcast lime has been, frequently, restricted to a shallow topsoil layer. As a consequence, a sharply-defined chemical quality gradient is created, with deterioration from the surface towards deeper layers in Oxisols in southern Brazil. The aim of this study was to assess the temporal effects of gypsum, applied alone or in combination with lime, on Ca2+ content and Al3+ saturation in the rooting zone (RZ) (0.00-0.40 m). Four experiments were conducted from 2009 to 2014 in Typic Hapludox soils with distinct chemical qualities in the RZ managed under a long-term NTS (over 20 years) in Rio Grande do Sul (subtropical region). A randomized block experimental design with three replications was used. Experiments I and II were implemented in 2009, with treatments consisting of gypsum rates ranging from 0.0 to 6.5 Mg ha-1. The other two experiments were implemented in 2011. In experiment III, a split-plot design was used, with plots received gypsum rates ranging from 0.0 to 5.0 Mg ha-1, and the subplots received two lime rates (0.0 and 2.0 Mg ha-1). A split-plot design was also used in experiment IV, with plots receiving gypsum rates ranging from 0.0 to 6.0 Mg ha-1, and subplots receiving four lime rates, ranging from 0.0 to 4.8 Mg ha-1. Soil samples were stratified in layers at depth from 0.00 to 0.60 m and taken during the period of the experiment. ... Mostrar Tudo |
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Thesagro: |
Gesso; Latossolo; Manejo do solo; Plantio direto; Química do solo; Sulfato de cálcio. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03318naa a2200253 a 4500
001 2076030
005 2017-12-18
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/18069657rbcs20150541$2DOI
100 1 $aNORA, D. D.
245 $aMitigation of the gradient of chemical properties in the rooting zone of dystrophic oxisols by gypsum and lime inputs under a no-till system.$h[electronic resource]
260 $c2017
520 $aABSTRACT: Improvement of soil chemical properties in dystrophic Oxisols managed under long-term no-tillage system (NTS) with surface broadcast lime has been, frequently, restricted to a shallow topsoil layer. As a consequence, a sharply-defined chemical quality gradient is created, with deterioration from the surface towards deeper layers in Oxisols in southern Brazil. The aim of this study was to assess the temporal effects of gypsum, applied alone or in combination with lime, on Ca2+ content and Al3+ saturation in the rooting zone (RZ) (0.00-0.40 m). Four experiments were conducted from 2009 to 2014 in Typic Hapludox soils with distinct chemical qualities in the RZ managed under a long-term NTS (over 20 years) in Rio Grande do Sul (subtropical region). A randomized block experimental design with three replications was used. Experiments I and II were implemented in 2009, with treatments consisting of gypsum rates ranging from 0.0 to 6.5 Mg ha-1. The other two experiments were implemented in 2011. In experiment III, a split-plot design was used, with plots received gypsum rates ranging from 0.0 to 5.0 Mg ha-1, and the subplots received two lime rates (0.0 and 2.0 Mg ha-1). A split-plot design was also used in experiment IV, with plots receiving gypsum rates ranging from 0.0 to 6.0 Mg ha-1, and subplots receiving four lime rates, ranging from 0.0 to 4.8 Mg ha-1. Soil samples were stratified in layers at depth from 0.00 to 0.60 m and taken during the period of the experiment. The use of gypsum increased the Ca2+ and SO4 2−-S contents, proportional to the rate applied, and lowered Al3+ saturation throughout the soil profile evaluated. However, an increase in base saturation of the subsoil (0.25-0.60 m layer) was only observed at high rates of gypsum (>5.0 Mg ha-1) in the medium-term and through accumulation of a high rainfall volume. A faster and more pronounced effect of subsoil improvement was observed when the chemical quality of the topsoil layer was already high and when gypsum and lime were applied in combination. Greater improvement in subsoil chemical quality induced by gypsum, alone or in combination with lime, was found in a period exceeding 30 months (Experiments III and IV), remaining for up to 54 months (Experiments I and II). The combination of gypsum withlime was an effective strategy to increase vertical movement of bases in the RZ, mitigating the gradient of chemical quality in dystrophic Oxisol, avoiding discontinuity in the NTS.
650 $aGesso
650 $aLatossolo
650 $aManejo do solo
650 $aPlantio direto
650 $aQuímica do solo
650 $aSulfato de cálcio
700 1 $aAMADO, T. J. C.
700 1 $aNICOLOSO, R. da S.
700 1 $aMAZUCO, A. C. B.
700 1 $aPICCIN, M.
773 $tRevista Brasileira de Ciência do Solo$gv. 41, n. e0150541, 2017.
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
13/04/2015 |
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Data da última atualização: |
01/07/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
SANTOS, R. D.; AQUINO, A. M. de; MAURÍCIO, A. C. |
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Afiliação: |
ADRIANA MARIA DE AQUINO, CNPAB; UFMA. |
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Título: |
Uso comparativo de coberturas do solo no manejo fitossanitário da cultura de alface (Lactuca sativa). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Cadernos de Agroecologia, v. 9, n. 4, p. 1-5, 2014 |
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Páginas: |
1-5 |
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ISSN: |
2236-7934 |
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Idioma: |
Português |
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Palavras-Chave: |
Cobertura viva; Competição. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00531naa a2200181 a 4500
001 2013412
005 2015-07-01
008 2014 bl --- 0-- u #d
022 $a2236-7934
100 1 $aSANTOS, R. D.
245 $aUso comparativo de coberturas do solo no manejo fitossanitário da cultura de alface (Lactuca sativa).
260 $c2014
300 $a1-5
653 $aCobertura viva
653 $aCompetição
700 1 $aAQUINO, A. M. de
700 1 $aMAURÍCIO, A. C.
773 $tCadernos de Agroecologia$gv. 9, n. 4, p. 1-5, 2014
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