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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
13/01/1998 |
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Data da última atualização: |
23/01/2007 |
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Autoria: |
COCHRANE, T. T. |
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Título: |
Regional soil differentiation of neotropical savannas. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
In: SARMIENTO, G. (Comp.). Las sabanas americanas: aspecto de su biogeografia, ecologia y utilizacion. Merida: Universidad de Los Andes, 1990. |
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Páginas: |
p.99-125. |
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Idioma: |
Inglês |
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Notas: |
Apresentado no: Simposio organizado em Guanare, Venezuela, sob os auspicios do Programa Decada de los Tropicos (IUBS, MAB-UNESCO). |
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Conteúdo: |
Although the savannas of tropical America have been used since colonial times for beef cattle raising, and more recently in the case of Brasil, Colombian and Venezuela for an increasing amount of agricultural production, soil research has largely been confined to a few experimental stations and the compilation of reconnaissance soil surveys. This has led to conflicting opinions concerning the role of soil in the development and maintenance of the savanna condition as regional differences could not be adequately compared. Notwithstanding, there is accumulating evidence that the characteristics of the savanna soils, especially their chemical limitations, are intimately linked with ecology, and the successful management of the savanna. Thus the objectve of this overview was to summarize what is known concerning the savanna soils. to indicate what should be studied more intensively, and to propose a means of carrying that research. The overview makes a fundamental distiction between poorly drained and well drained savannas, but emphasizes the importance of the presence of well drained soils in predominantly poorly drained savannas and vice-versa. The poorly drained savannas soils, apart from their physical problems caused by water-logging may also have chemical limitations including iron toxicity. For the well drained savannas, firm evidence has surfaced of: a) a common climatic predisposition influencing their formation; their distinctive total wet season potential evapotranspiration regime which is different from other physiognomic vegetation classes throgh tropical America and, b)the occurrence of serious soil chemical limitations, icluding deficiency leves of nutrients as P,S,K,Ca and some trace elements, toxicity levels of AL or Mn, and nutrient inbalances Ca/Mg in central Brasil and Ca/k and possibly Mg/K in the Colombian llanos. Nutrient problems in one from or another appear to be ubiquitous, and influence savanna vegetation. However, they differ from region to region, and work designed to identify these limitation is considered of maximum priority. This will require a detailed comparative study of key areas savannas soils, and especially their chemical properties. The problem of understanding the soil conditions of the savannas is only a part of a global challenge to better understand and compare soils through the world. To meet this need, the international Soil Science Society has recently developed a project titled the "World Soil and Terrain Digital Data Base", acronym SOTER, with the objective of using emerging information technology, satellite and radar imagery, and modern soil analytical techniques, to construct a world soils and terrain computerizer data base. Consequently it is suggested that this proiect be implemented in selected savanna regions of tropical America, and latter expanded to other savanna regions of the world, to provide an indepth diagnosis of theis soil limitations, and to facilitate their comparison not only in the context of savannas but also with other acosystems. The project would also contribute to the development of a global framework for biologically oriented research over the biosphere. MenosAlthough the savannas of tropical America have been used since colonial times for beef cattle raising, and more recently in the case of Brasil, Colombian and Venezuela for an increasing amount of agricultural production, soil research has largely been confined to a few experimental stations and the compilation of reconnaissance soil surveys. This has led to conflicting opinions concerning the role of soil in the development and maintenance of the savanna condition as regional differences could not be adequately compared. Notwithstanding, there is accumulating evidence that the characteristics of the savanna soils, especially their chemical limitations, are intimately linked with ecology, and the successful management of the savanna. Thus the objectve of this overview was to summarize what is known concerning the savanna soils. to indicate what should be studied more intensively, and to propose a means of carrying that research. The overview makes a fundamental distiction between poorly drained and well drained savannas, but emphasizes the importance of the presence of well drained soils in predominantly poorly drained savannas and vice-versa. The poorly drained savannas soils, apart from their physical problems caused by water-logging may also have chemical limitations including iron toxicity. For the well drained savannas, firm evidence has surfaced of: a) a common climatic predisposition influencing their formation; their distinctive total wet season potential evapotranspi... Mostrar Tudo |
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Palavras-Chave: |
Clima: Deficiencia do solo; Neotropical region; Regiao neotropical; Savana; Soil deficiencies. |
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Thesagro: |
Cerrado; Fertilidade do Solo; Solo; Toxidez. |
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Thesaurus Nal: |
climate; savannas; soil; soil fertility; toxicity. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 04179naa a2200313 a 4500
001 1553696
005 2007-01-23
008 1990 bl uuuu u00u1 u #d
100 1 $aCOCHRANE, T. T.
245 $aRegional soil differentiation of neotropical savannas.
260 $c1990
300 $ap.99-125.
500 $aApresentado no: Simposio organizado em Guanare, Venezuela, sob os auspicios do Programa Decada de los Tropicos (IUBS, MAB-UNESCO).
520 $aAlthough the savannas of tropical America have been used since colonial times for beef cattle raising, and more recently in the case of Brasil, Colombian and Venezuela for an increasing amount of agricultural production, soil research has largely been confined to a few experimental stations and the compilation of reconnaissance soil surveys. This has led to conflicting opinions concerning the role of soil in the development and maintenance of the savanna condition as regional differences could not be adequately compared. Notwithstanding, there is accumulating evidence that the characteristics of the savanna soils, especially their chemical limitations, are intimately linked with ecology, and the successful management of the savanna. Thus the objectve of this overview was to summarize what is known concerning the savanna soils. to indicate what should be studied more intensively, and to propose a means of carrying that research. The overview makes a fundamental distiction between poorly drained and well drained savannas, but emphasizes the importance of the presence of well drained soils in predominantly poorly drained savannas and vice-versa. The poorly drained savannas soils, apart from their physical problems caused by water-logging may also have chemical limitations including iron toxicity. For the well drained savannas, firm evidence has surfaced of: a) a common climatic predisposition influencing their formation; their distinctive total wet season potential evapotranspiration regime which is different from other physiognomic vegetation classes throgh tropical America and, b)the occurrence of serious soil chemical limitations, icluding deficiency leves of nutrients as P,S,K,Ca and some trace elements, toxicity levels of AL or Mn, and nutrient inbalances Ca/Mg in central Brasil and Ca/k and possibly Mg/K in the Colombian llanos. Nutrient problems in one from or another appear to be ubiquitous, and influence savanna vegetation. However, they differ from region to region, and work designed to identify these limitation is considered of maximum priority. This will require a detailed comparative study of key areas savannas soils, and especially their chemical properties. The problem of understanding the soil conditions of the savannas is only a part of a global challenge to better understand and compare soils through the world. To meet this need, the international Soil Science Society has recently developed a project titled the "World Soil and Terrain Digital Data Base", acronym SOTER, with the objective of using emerging information technology, satellite and radar imagery, and modern soil analytical techniques, to construct a world soils and terrain computerizer data base. Consequently it is suggested that this proiect be implemented in selected savanna regions of tropical America, and latter expanded to other savanna regions of the world, to provide an indepth diagnosis of theis soil limitations, and to facilitate their comparison not only in the context of savannas but also with other acosystems. The project would also contribute to the development of a global framework for biologically oriented research over the biosphere.
650 $aclimate
650 $asavannas
650 $asoil
650 $asoil fertility
650 $atoxicity
650 $aCerrado
650 $aFertilidade do Solo
650 $aSolo
650 $aToxidez
653 $aClima: Deficiencia do solo
653 $aNeotropical region
653 $aRegiao neotropical
653 $aSavana
653 $aSoil deficiencies
773 $tIn: SARMIENTO, G. (Comp.). Las sabanas americanas: aspecto de su biogeografia, ecologia y utilizacion. Merida: Universidad de Los Andes, 1990.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
10/04/2024 |
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Data da última atualização: |
10/04/2024 |
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Autoria: |
SILVA, N. C. M.; MACHADO, C. M. M.; MORETTI, C. L.; SILVA, M. A. |
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Afiliação: |
N. C. M. SILVA, CENTRO FEDERAL DE EDUCAÇÃO TECNOLÓGICA DE CUIABÁ; CRISTINA MARIA MONTEIRO MACHADO, CNPH; CELSON LUIZ MORETTI, CNPH; M. A. SILVA, CENTRO FEDERAL DE EDUCAÇÃO TECNOLÓGICA DE CUIABÁ. |
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Título: |
Secagem de raspas da fabricação de minicenouras em estufas com circulação de ar forçada. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS, 6., 2005, Campinas. Ciência de alimentos abrindo caminhos para o desenvolvimento científico, tecnológico e industrial. Campinas: Unicamp, 2005. |
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Idioma: |
Português |
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Notas: |
Resumo. |
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Palavras-Chave: |
Minicenoura. |
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Thesagro: |
Cenoura; Daucus Carota; Eliminação de Resíduo; Processamento Mínimo. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163482/1/RA-CNPH-Silva-et-al-2005.pdf
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Marc: |
LEADER 00785nam a2200205 a 4500
001 2163482
005 2024-04-10
008 2005 bl uuuu u00u1 u #d
100 1 $aSILVA, N. C. M.
245 $aSecagem de raspas da fabricação de minicenouras em estufas com circulação de ar forçada.$h[electronic resource]
260 $aIn: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS, 6., 2005, Campinas. Ciência de alimentos abrindo caminhos para o desenvolvimento científico, tecnológico e industrial. Campinas: Unicamp$c2005
500 $aResumo.
650 $aCenoura
650 $aDaucus Carota
650 $aEliminação de Resíduo
650 $aProcessamento Mínimo
653 $aMinicenoura
700 1 $aMACHADO, C. M. M.
700 1 $aMORETTI, C. L.
700 1 $aSILVA, M. A.
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