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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
30/01/2023 |
Data da última atualização: |
13/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
NEVES, L. V. de M. W.; SOUSA, J. E. S. de; SANTOS, J. C. B. dos; ARAUJO FILHO, J. C. de; CORRÊA, M. M.; SOUSA, M. G.; FRACETTO, F. J. C.; FRACETTO, G. G. M.; ARAUJO, J. K. S.; FREIRE, G. A. P.; FERREIRA, T. O.; SOUZA JÚNIOR, V. S. de. |
Afiliação: |
LAÉRCIO VIEIRA DE MELO WANDERLEY NEVES, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; JULIET EMILIA SANTOS DE SOUSA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; JEAN CHEYSON BARROS DOS SANTOS, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; JOSE COELHO DE ARAUJO FILHO, CNPS; MARCELO METRI CORRÊA, UNIVERSIDADE FEDERAL DO AGRESTE DE PERNAMBUCO; MARILYA GABRYELLA SOUSA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; FELIPE JOSÉ CURY FRACETTO, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; GISELLE GOMES MONTEIRO FRACETTO, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; JANE KELLY SILVA ARAUJO, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; GABRIEL ARAÚJO PAES FREIRE, FUNDAÇÃO UNIVERSITÁRIA FEDERAL DE RONDÔNIA; TIAGO OSÓRIO FERREIRA, UNIVERSIDADE DE SÃO PAULO; VALDOMIRO SEVERINO DE SOUZA JÚNIOR, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO. |
Título: |
Weathering of gneiss saprolites and formation of Planosols under semiarid climate (NE Brazil). |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Journal of South American Earth Sciences, v. 123, 104206, Mar. 2023. |
DOI: |
https://doi.org/10.1016/j.jsames.2023.104206 |
Idioma: |
Inglês |
Conteúdo: |
The Brazilian semiarid is one of the most populous regions in the world. The main income for populations in this region is agricultural production, which in turn is limited by climatic and soil conditions. This region has environmental and economic correlations with underdeveloped regions in northwestern Africa, displaying soil surface with monotonous landscapes of smooth undulating relief with large extensions of Planosols. Climatic conditions that lead to the formation of poorly developed soils and to losses of surface layers make these soils susceptible to degradation. In the Brazilian semiarid, lithology shows that felsic rocks are the main factor in pedogenesis of Planosols, conferring the main physical, chemical, and mineralogical attributes to the soil. In this study, we evaluated the pedogenesis by weathering of gneisses (felsic rocks) in two profiles of Planosols in the Cabrobó Desertification Nucleus, Pernambuco State, northeast Brazil, highlighting the role of the parent material in the soil intrinsic characteristics in the pedogenetic processes. The primary assemblage and pedological features were determined by optical microscopy in thin sections of the A, B, and C horizons from the two soil profiles. The secondary assemblage was identified by X-ray diffractometry using the technique: SEM-scanning electron microscopy. Clay formation in situ, colluvial contribution, and elutriation process contributed to the formation of the gradient textural in both Planosols, with no evidence of argilluviation. For total regolith profile, acidic metamorphic rocks present high structural variability directly influencing the evolution of saprolites, the alteration of primary minerals, and the formation routes of secondary minerals. The secondary assemblage was rather similar and comprised illite, smectite, and kaolinite in both regoliths. The saprolite inclination in P1 favors water movement in relation to P2. The regolith in P1 shows greater mineral alteration with increased pedogenic development. MenosThe Brazilian semiarid is one of the most populous regions in the world. The main income for populations in this region is agricultural production, which in turn is limited by climatic and soil conditions. This region has environmental and economic correlations with underdeveloped regions in northwestern Africa, displaying soil surface with monotonous landscapes of smooth undulating relief with large extensions of Planosols. Climatic conditions that lead to the formation of poorly developed soils and to losses of surface layers make these soils susceptible to degradation. In the Brazilian semiarid, lithology shows that felsic rocks are the main factor in pedogenesis of Planosols, conferring the main physical, chemical, and mineralogical attributes to the soil. In this study, we evaluated the pedogenesis by weathering of gneisses (felsic rocks) in two profiles of Planosols in the Cabrobó Desertification Nucleus, Pernambuco State, northeast Brazil, highlighting the role of the parent material in the soil intrinsic characteristics in the pedogenetic processes. The primary assemblage and pedological features were determined by optical microscopy in thin sections of the A, B, and C horizons from the two soil profiles. The secondary assemblage was identified by X-ray diffractometry using the technique: SEM-scanning electron microscopy. Clay formation in situ, colluvial contribution, and elutriation process contributed to the formation of the gradient textural in both Planosols, wi... Mostrar Tudo |
Palavras-Chave: |
Ilita; K-feldspars; K-feldspato; Perfis de regolito; Plagioclásio; Regolith profile. |
Thesaurus Nal: |
Illite; Plagioclase. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 03117naa a2200361 a 4500 001 2151336 005 2023-03-13 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.jsames.2023.104206$2DOI 100 1 $aNEVES, L. V. de M. W. 245 $aWeathering of gneiss saprolites and formation of Planosols under semiarid climate (NE Brazil).$h[electronic resource] 260 $c2023 520 $aThe Brazilian semiarid is one of the most populous regions in the world. The main income for populations in this region is agricultural production, which in turn is limited by climatic and soil conditions. This region has environmental and economic correlations with underdeveloped regions in northwestern Africa, displaying soil surface with monotonous landscapes of smooth undulating relief with large extensions of Planosols. Climatic conditions that lead to the formation of poorly developed soils and to losses of surface layers make these soils susceptible to degradation. In the Brazilian semiarid, lithology shows that felsic rocks are the main factor in pedogenesis of Planosols, conferring the main physical, chemical, and mineralogical attributes to the soil. In this study, we evaluated the pedogenesis by weathering of gneisses (felsic rocks) in two profiles of Planosols in the Cabrobó Desertification Nucleus, Pernambuco State, northeast Brazil, highlighting the role of the parent material in the soil intrinsic characteristics in the pedogenetic processes. The primary assemblage and pedological features were determined by optical microscopy in thin sections of the A, B, and C horizons from the two soil profiles. The secondary assemblage was identified by X-ray diffractometry using the technique: SEM-scanning electron microscopy. Clay formation in situ, colluvial contribution, and elutriation process contributed to the formation of the gradient textural in both Planosols, with no evidence of argilluviation. For total regolith profile, acidic metamorphic rocks present high structural variability directly influencing the evolution of saprolites, the alteration of primary minerals, and the formation routes of secondary minerals. The secondary assemblage was rather similar and comprised illite, smectite, and kaolinite in both regoliths. The saprolite inclination in P1 favors water movement in relation to P2. The regolith in P1 shows greater mineral alteration with increased pedogenic development. 650 $aIllite 650 $aPlagioclase 653 $aIlita 653 $aK-feldspars 653 $aK-feldspato 653 $aPerfis de regolito 653 $aPlagioclásio 653 $aRegolith profile 700 1 $aSOUSA, J. E. S. de 700 1 $aSANTOS, J. C. B. dos 700 1 $aARAUJO FILHO, J. C. de 700 1 $aCORRÊA, M. M. 700 1 $aSOUSA, M. G. 700 1 $aFRACETTO, F. J. C. 700 1 $aFRACETTO, G. G. M. 700 1 $aARAUJO, J. K. S. 700 1 $aFREIRE, G. A. P. 700 1 $aFERREIRA, T. O. 700 1 $aSOUZA JÚNIOR, V. S. de 773 $tJournal of South American Earth Sciences$gv. 123, 104206, Mar. 2023.
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Embrapa Solos (CNPS) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
24/10/2003 |
Data da última atualização: |
13/07/2018 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SILVA, A. F.; PEREIRA, P. R. G.; SANTANA, L. M. de; ALBUQUERQUE, T. C. S. de. |
Afiliação: |
ALINEAUREA FLORENTINO SILVA, CPATSA; TERESINHA COSTA SILVEIRA DE ALBUQUERQUE, CPATSA. |
Título: |
Crescimento de teores de nutrientes em alface influenciados por carbonato de cãlcio e pela correção de pH da solução hidropônica. |
Ano de publicação: |
2003 |
Fonte/Imprenta: |
Horticultura Brasileira, Brasília, v. 21, n. 2, p. 369, jul. 2003. |
Idioma: |
Português |
Notas: |
Suplemento 1. Resumos do 43 Congresso Brasileiro de Olericultura, Recife, jul. 2003. |
Conteúdo: |
O objetivo do trabalho foi avaliar, em cultivo hidropônico, a influência do carbonato de cálcio (CaC03) e da correção do pH da solução nutritiva sobre o crescimento das plantas, a concentração de nutrientes nas folhas da alface e consumo de água pelas plantas, bem como a disponibilidade de nutrientes, condutividade elétrica e pH na solução nutritiva. |
Palavras-Chave: |
Sistema hidropônico; Solução tamponada. |
Thesagro: |
Alface; Lactuca Sativa; Nutriente. |
Categoria do assunto: |
A Sistemas de Cultivo |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/179746/1/Horticultura-Brasileira-v.21-n.2-p.361-2003.pdf
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Marc: |
LEADER 01138nam a2200217 a 4500 001 1152159 005 2018-07-13 008 2003 bl uuuu u00u1 u #d 100 1 $aSILVA, A. F. 245 $aCrescimento de teores de nutrientes em alface influenciados por carbonato de cãlcio e pela correção de pH da solução hidropônica. 260 $aHorticultura Brasileira, Brasília, v. 21, n. 2, p. 369, jul. 2003.$c2003 500 $aSuplemento 1. Resumos do 43 Congresso Brasileiro de Olericultura, Recife, jul. 2003. 520 $aO objetivo do trabalho foi avaliar, em cultivo hidropônico, a influência do carbonato de cálcio (CaC03) e da correção do pH da solução nutritiva sobre o crescimento das plantas, a concentração de nutrientes nas folhas da alface e consumo de água pelas plantas, bem como a disponibilidade de nutrientes, condutividade elétrica e pH na solução nutritiva. 650 $aAlface 650 $aLactuca Sativa 650 $aNutriente 653 $aSistema hidropônico 653 $aSolução tamponada 700 1 $aPEREIRA, P. R. G. 700 1 $aSANTANA, L. M. de 700 1 $aALBUQUERQUE, T. C. S. de
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