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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
05/12/2000 |
Data da última atualização: |
30/01/2019 |
Autoria: |
RENCK, A.; LEHMANN, J. |
Afiliação: |
University of Bayreuth. |
Título: |
Rapid water changes in a highly aggregated Xanthic Ferralsol of the central Amazon. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS, 2000, Hamburg. Programa and abstracts... Hamburg: University, 2000. |
Páginas: |
p.182 |
Idioma: |
Inglês |
Conteúdo: |
We investigated (i) the soil water dynamics of a Xanthic Ferralsol to a soil depth of 4 m in order to evaluate the extent of rapid water percolation into the subsoil, and (ii) the effect of different indigenous tree crops on soil water contents. TDR and tensiometers were installed und cupuacu, pupunha (peach palm), castanha-do-Para (Brazil nut), urucu (annatto) in a multi-strata agroforestry system, in Manaus-AM (Brasil). After a heavy storm, soilwater suction decreases within a few minutes up to a depth of a 0.9 m-1.5 m, but significantly later at greater depths. Soil water depletion was highest at the topsoil for urucu and cupuacu, and decreased rapidly with depth. In constrat, pupunha took up water homogeneously from the soil profile to l.5 m depth. Castanha-do-Para was not able to utilize subsoil water as well as it was antecipated from the tap root found from root excavations. The legume cover crop pueraria did not take up soil water at a depth of 0.9 m and belos. Soil water dynamics under pupunha may indicate that this palm is better able to utilize subsoil water (0.9 m-1.5 m) and reduce nutrient leaching than the other investigated tree crops or the cover crop. Especially under the high leaching conditions of the aggregated soils and high rainfall regime, nutrient uptake from the topsoil may not reduce nutrient leaching due to the rapid soil water percolation even to greater depths. |
Palavras-Chave: |
Agrofloresta; Amazonas; Brasil; Cover plants; Manaus; Nutrient; Plant water relations; Soil chemicophysical properties; Urucu. |
Thesagro: |
Água do Solo; Bactris Gasipaes; Bertholletia Excelsa; Bixa Orellana; Castanha do Para; Cobertura do Solo; Conservação do Solo; Cultivo Multiplo; Cupuaçu; Física do Solo; Floresta Tropical Úmida; Latossolo Amarelo; Leguminosa; Lixiviação; Nutriente; Pueraria Phaseoloides; Pupunha; Relação Água-Planta; Theobroma Grandiflorum. |
Thesaurus Nal: |
agroforestry; Ferralsols; leaching; legumes; multiple cropping; soil conservation; soil water; tropical rain forests. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03011naa a2200577 a 4500 001 1670042 005 2019-01-30 008 2000 bl uuuu u00u1 u #d 100 1 $aRENCK, A. 245 $aRapid water changes in a highly aggregated Xanthic Ferralsol of the central Amazon. 260 $c2000 300 $ap.182 520 $aWe investigated (i) the soil water dynamics of a Xanthic Ferralsol to a soil depth of 4 m in order to evaluate the extent of rapid water percolation into the subsoil, and (ii) the effect of different indigenous tree crops on soil water contents. TDR and tensiometers were installed und cupuacu, pupunha (peach palm), castanha-do-Para (Brazil nut), urucu (annatto) in a multi-strata agroforestry system, in Manaus-AM (Brasil). After a heavy storm, soilwater suction decreases within a few minutes up to a depth of a 0.9 m-1.5 m, but significantly later at greater depths. Soil water depletion was highest at the topsoil for urucu and cupuacu, and decreased rapidly with depth. In constrat, pupunha took up water homogeneously from the soil profile to l.5 m depth. Castanha-do-Para was not able to utilize subsoil water as well as it was antecipated from the tap root found from root excavations. The legume cover crop pueraria did not take up soil water at a depth of 0.9 m and belos. Soil water dynamics under pupunha may indicate that this palm is better able to utilize subsoil water (0.9 m-1.5 m) and reduce nutrient leaching than the other investigated tree crops or the cover crop. Especially under the high leaching conditions of the aggregated soils and high rainfall regime, nutrient uptake from the topsoil may not reduce nutrient leaching due to the rapid soil water percolation even to greater depths. 650 $aagroforestry 650 $aFerralsols 650 $aleaching 650 $alegumes 650 $amultiple cropping 650 $asoil conservation 650 $asoil water 650 $atropical rain forests 650 $aÁgua do Solo 650 $aBactris Gasipaes 650 $aBertholletia Excelsa 650 $aBixa Orellana 650 $aCastanha do Para 650 $aCobertura do Solo 650 $aConservação do Solo 650 $aCultivo Multiplo 650 $aCupuaçu 650 $aFísica do Solo 650 $aFloresta Tropical Úmida 650 $aLatossolo Amarelo 650 $aLeguminosa 650 $aLixiviação 650 $aNutriente 650 $aPueraria Phaseoloides 650 $aPupunha 650 $aRelação Água-Planta 650 $aTheobroma Grandiflorum 653 $aAgrofloresta 653 $aAmazonas 653 $aBrasil 653 $aCover plants 653 $aManaus 653 $aNutrient 653 $aPlant water relations 653 $aSoil chemicophysical properties 653 $aUrucu 700 1 $aLEHMANN, J. 773 $tIn: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS, 2000, Hamburg. Programa and abstracts... Hamburg: University, 2000.
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Embrapa Amazônia Ocidental (CPAA) |
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Registros recuperados : 96 | |
5. | | LEHMANN, J.; CRAVO, M.; ZECH, W. Single tree effects on soil organic matter. In: SHIFT PROJECT ENV 45 (Manaus-AM). Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Manaus: EMBRAPA-CPAA : BMBF, 1997. p. 58-66.Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Amazônia Ocidental. |
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17. | | SWAMI, S. N.; STEINER, C.; TEIXEIRA, W. G.; LEHMANN, J. Charcoal making in the Brazilian Amazon: economic aspects of production and carbon conversion efficiencies of kilns. In: WOODS, W. I.; TEIXEIRA, W. G.; LEHMANN, J.; STEINER, C.; WINKLERPRINS, A.; REBELLATO, L. (Ed.). Amazonian dark earths: Wim Sombroek's vision. Berlin: Springer, 2009. p. 411-422.Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Amazônia Ocidental. |
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Registros recuperados : 96 | |
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