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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
22/11/2000 |
Data da última atualização: |
22/11/2000 |
Autoria: |
LILIENFEIN, J.; WILCKE, W.; AYARZA, M. A.; LIMA, S. do C.; VILELA, L.; ZECH, W. |
Título: |
Annual course of matric potential in differently used savanna oxisols in Brazil. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Soil Society of American Journal, Madison, v.63, p.1778-1785, 1999. |
Idioma: |
Inglês |
Conteúdo: |
Sustainable land use in periodically dry Brasilian savannas requires a water-saving management. We hypothesized that the annual course of matric potentials (simbolo) in very-fine, isohyperthermic Anionic Acrustoxes of Pinus plantations (PI), degraded (DP) and productive pastures (PP) no-till (NT) and conventional tillage (CT) cropping, and natural savanna (Cerrado, CE) differed significantly. On three plots in each of these land-use systems water input and (simbolo) at the 0.15-, 0.30-, 0.80-, 1.2-, and 2.0-m depths was measured with tensiometers weekly between 27 Mar. 1997 and 28 Apr. 1998.Precipitation between 29 Apr. 1997 and 28 Apr.1998 was 1562 mm,with only 210 mm in May to September, when (simbolo) at the 0.15-and 0,30-m depths decreased to less than -80kPa in all systems; the lowest (simbolo) at 2-m depth was -57kPa. During the monitored period, the PI soils had lower average (simbolo) at the 0,8- to 2-m depths (-60 kPa) than those in CE (-46), indicating higher rainfall interception losses and higher transpiration. In CT, average (simbolo) values at the 0.8-to 2-m depths (-29) were higher than in NT (-51) because of different crops and different soil management. Between june and November, (simbolo) at the 2-m depth in CE decreased to a lower value (-42) than in vegetation-free CT (-22) and NT (-27). In DP and PP soils, (simbolo) were similar to those in CE soils at all depths. The estimated average water storage in the upper 2 m during the monitored period was 565 mm (CT) > 553 (PP) > 541 (DP) > 537 (CE) > 526 (NT) > 479 (PI).Our results show that mainly the vegetation type and tillage practices control the annual course of matric potencial in differently used savanna Oxisols. MenosSustainable land use in periodically dry Brasilian savannas requires a water-saving management. We hypothesized that the annual course of matric potentials (simbolo) in very-fine, isohyperthermic Anionic Acrustoxes of Pinus plantations (PI), degraded (DP) and productive pastures (PP) no-till (NT) and conventional tillage (CT) cropping, and natural savanna (Cerrado, CE) differed significantly. On three plots in each of these land-use systems water input and (simbolo) at the 0.15-, 0.30-, 0.80-, 1.2-, and 2.0-m depths was measured with tensiometers weekly between 27 Mar. 1997 and 28 Apr. 1998.Precipitation between 29 Apr. 1997 and 28 Apr.1998 was 1562 mm,with only 210 mm in May to September, when (simbolo) at the 0.15-and 0,30-m depths decreased to less than -80kPa in all systems; the lowest (simbolo) at 2-m depth was -57kPa. During the monitored period, the PI soils had lower average (simbolo) at the 0,8- to 2-m depths (-60 kPa) than those in CE (-46), indicating higher rainfall interception losses and higher transpiration. In CT, average (simbolo) values at the 0.8-to 2-m depths (-29) were higher than in NT (-51) because of different crops and different soil management. Between june and November, (simbolo) at the 2-m depth in CE decreased to a lower value (-42) than in vegetation-free CT (-22) and NT (-27). In DP and PP soils, (simbolo) were similar to those in CE soils at all depths. The estimated average water storage in the upper 2 m during the monitored period was 565 m... Mostrar Tudo |
Palavras-Chave: |
Agua de solo. |
Thesagro: |
Cerrado; Oxisol. |
Thesaurus Nal: |
Ferralsols; soil water. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02366naa a2200241 a 4500 001 1546510 005 2000-11-22 008 1999 bl --- 0-- u #d 100 1 $aLILIENFEIN, J. 245 $aAnnual course of matric potential in differently used savanna oxisols in Brazil. 260 $c1999 520 $aSustainable land use in periodically dry Brasilian savannas requires a water-saving management. We hypothesized that the annual course of matric potentials (simbolo) in very-fine, isohyperthermic Anionic Acrustoxes of Pinus plantations (PI), degraded (DP) and productive pastures (PP) no-till (NT) and conventional tillage (CT) cropping, and natural savanna (Cerrado, CE) differed significantly. On three plots in each of these land-use systems water input and (simbolo) at the 0.15-, 0.30-, 0.80-, 1.2-, and 2.0-m depths was measured with tensiometers weekly between 27 Mar. 1997 and 28 Apr. 1998.Precipitation between 29 Apr. 1997 and 28 Apr.1998 was 1562 mm,with only 210 mm in May to September, when (simbolo) at the 0.15-and 0,30-m depths decreased to less than -80kPa in all systems; the lowest (simbolo) at 2-m depth was -57kPa. During the monitored period, the PI soils had lower average (simbolo) at the 0,8- to 2-m depths (-60 kPa) than those in CE (-46), indicating higher rainfall interception losses and higher transpiration. In CT, average (simbolo) values at the 0.8-to 2-m depths (-29) were higher than in NT (-51) because of different crops and different soil management. Between june and November, (simbolo) at the 2-m depth in CE decreased to a lower value (-42) than in vegetation-free CT (-22) and NT (-27). In DP and PP soils, (simbolo) were similar to those in CE soils at all depths. The estimated average water storage in the upper 2 m during the monitored period was 565 mm (CT) > 553 (PP) > 541 (DP) > 537 (CE) > 526 (NT) > 479 (PI).Our results show that mainly the vegetation type and tillage practices control the annual course of matric potencial in differently used savanna Oxisols. 650 $aFerralsols 650 $asoil water 650 $aCerrado 650 $aOxisol 653 $aAgua de solo 700 1 $aWILCKE, W. 700 1 $aAYARZA, M. A. 700 1 $aLIMA, S. do C. 700 1 $aVILELA, L. 700 1 $aZECH, W. 773 $tSoil Society of American Journal, Madison$gv.63, p.1778-1785, 1999.
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Embrapa Cerrados (CPAC) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
10/03/1997 |
Data da última atualização: |
11/06/2018 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
COELHO, A. M.; OLIVEIRA, A. C.; SANABIO, D.; KANECO, W. T.; SOUZA, R. A. |
Afiliação: |
ANTONIO MARCOS COELHO, CNPMS; ANTONIO CARLOS DE OLIVEIRA, CNPMS. |
Título: |
Formas de magnésio em latossolos e suas contribuições para a nutrição das culturas de milho e feijão. |
Ano de publicação: |
1996 |
Fonte/Imprenta: |
In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 22., 1996, Manaus. Resumos expandidos... Manaus: UA/FCA/EMBRAPA/INPA, 1996. p. 582-583. |
Idioma: |
Português |
Palavras-Chave: |
Bean; Latosol; Maize. |
Thesagro: |
Feijão; Latossolo; Magnésio; Milho; Nutrição; Phaseolus Vulgaris; Zea Mays. |
Thesaurus NAL: |
corn; magnesium; nutrition. |
Categoria do assunto: |
W Química e Física |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/43875/1/Formas-magnesio.pdf
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Marc: |
LEADER 00925nam a2200301 a 4500 001 1474595 005 2018-06-11 008 1996 bl uuuu u00u1 u #d 100 1 $aCOELHO, A. M. 245 $aFormas de magnésio em latossolos e suas contribuições para a nutrição das culturas de milho e feijão.$h[electronic resource] 260 $aIn: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 22., 1996, Manaus. Resumos expandidos... Manaus: UA/FCA/EMBRAPA/INPA, 1996. p. 582-583.$c1996 650 $acorn 650 $amagnesium 650 $anutrition 650 $aFeijão 650 $aLatossolo 650 $aMagnésio 650 $aMilho 650 $aNutrição 650 $aPhaseolus Vulgaris 650 $aZea Mays 653 $aBean 653 $aLatosol 653 $aMaize 700 1 $aOLIVEIRA, A. C. 700 1 $aSANABIO, D. 700 1 $aKANECO, W. T. 700 1 $aSOUZA, R. A.
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