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Registros recuperados: 8
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A hydropedological approach to a mountainous Clayey Humic Dystrudept in the Mantiqueira Range, southeastern Brazil Scientia Agricola
Pinto,Leandro Campos; Mello,Carlos Rogério de; Norton,Lloyd Darrell; Poggere,Giovana Clarice; Owens,Phillip Ray; Curi,Nilton.
ABSTRACT: The Mantiqueira Range region is one of the most important headwaters in southeastern Brazil. In this context, the relationship between pedology and hydrology has been debated and analyzed in recent years, contributing to the creation of a multidisciplinary science call hydropedology. Therefore, the aim of this study was to evaluate the hydropedological properties of a mountainous Clayey Humic Dystrudept in the Mantiqueira Range region, in the state of Minas Gerais, Brazil, comparing two land-uses, native forest and pasture. The hydraulic conductivity results demonstrated that native forest (MFO) has a strong influence on this parameter, offering conditions for movement of water in the soil that are more adequate in this profile than in pasture....
Tipo: Info:eu-repo/semantics/article Palavras-chave: S index; Saturated hydraulic conductivity; Soil pore size distribution; Soil erosion; Water quality.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000100060
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Adsorção de arsenato (HAsO42-) pela fração argila de solos das Penínsulas Keller e Barton, ilha Rei George, Antártica Marítima Rev. Ciênc. Agron.
Poggere,Giovana Clarice; Melo,Vander de Freitas; Francelino,Márcio Rocha; Simas,Felipe Nogueira Bello; Schaefer,Carlos Ernesto Gonçalves Reynaud.
RESUMO Objetivou-se determinar a capacidade máxima de adsorção de As(V) na forma de HAsO42- (CMAAs) pela fração argila de solos em diferentes ambientes nas Penínsulas Keller e Barton, Ilha Rei George, Antártica Marítima. Foram realizadas análises química e granulométrica na terra fina seca ao ar, e na fração argila quantificou-se o material amorfo e a CMAAs. Os dados das análises químicas, granulometrica e da fração argila foram correlacionados com a CMAAs. A CMAAs foi baixa (3.554 mg kg-1), sendo o perfil com influência ornitogênica de pinguins o que apresentou os maiores valores. O pH básico das soluções de saturação não favoreceu a adsorção da espécie desprotonada HAsO42-. A quantidade de argila dos solos foi menos importante que a composição...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Poluição ambiental; Adsorção específica e não específica; Material amorfo.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000100013
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Alkalinized sewage sludge application improves fertility of acid soils Ciência e Agrotecnologia
Barbosa,Julierme Zimmer; Poggere,Giovana Clarice; Dalpisol,Maristela; Serrat,Beatriz Monte; Bittencourt,Simone; Motta,Antonio Carlos Vargas.
ABSTRACT Although it is known that alkalinized sewage sludge raises the pH of acid soils, there is limited knowledge regarding its effects on other soil fertility indicators, such as P and K availability and soil organic C content. Thus, the goal of this study was to evaluate how the application of alkalinized sewage sludge affects the fertility of acid soil. Twenty sewage treatment plants were selected throughout Paraná State (Brazil), and samples of alkalinized sewage sludge and samples of the most representative agricultural soil of the region were collected (covering soils with medium, clayey or very clayey texture). Each soil was incubated for 60 days with doses of sewage sludge (0, 10, 20, 40, and 80 Mg ha-1) from its region and equivalent doses of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sanitation waste; Liming; Phosphorus recovery; Nutrient source; Organic matter..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500483
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Modeling and prediction of sulfuric acid digestion analyses data from PXRF spectrometry in tropical soils Scientia Agricola
Silva,Sérgio Henrique Godinho; Silva,Elen Alvarenga; Poggere,Giovana Clarice; Pádua Junior,Alceu Linares; Gonçalves,Mariana Gabriele Marcolino; Guilherme,Luiz Roberto Guimarães; Curi,Nilton.
ABSTRACT Sulfuric acid digestion analyses (SAD) provide useful information to environmental studies, in terms of the geochemical balance of nutrients, parent material uniformity, nutrient reserves for perennial crops, and mineralogical composition of the soil clay fraction. Yet, these analyses are costly, time consuming, and generate chemical waste. This work aimed at predicting SAD results from portable X-ray fluorescence (pXRF) spectrometry, which is proposed as a “green chemistry” alternative to the current SAD method. Soil samples developed from different parent materials were analyzed for soil texture and SAD, and scanned with pXRF. The SAD results were predicted from pXRF elemental analyses through simple linear regressions, stepwise multiple linear...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil clay fraction; Weathering indices; Random forest; Proximal sensors; Green chemistry.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000401402
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Tropical soils characterization at low cost and time using portable X-ray fluorescence spectrometer (pXRF): Effects of different sample preparation methods Ciência e Agrotecnologia
Silva,Sérgio Henrique Godinho; Silva,Elen Alvarenga; Poggere,Giovana Clarice; Guilherme,Luiz Roberto Guimarães; Curi,Nilton.
ABSTRACT Portable X-ray fluorescence spectrometer (pXRF) has been recently adopted by the Soil Science community for uses in both field and laboratory, obtaining the total content of several chemical elements in a few seconds. Sulfuric acid digestion is an expensive and time-consuming laboratory analysis that provides contents of Fe2O3, Al2O3, SiO2, TiO2 and P2O5, important for soil studies. Due to few pXRF studies in tropical soils, this work aimed to compare contents of Fe2O3, Al2O3, SiO2, TiO2 and P2O5 obtained by pXRF with sulfuric acid digestion results, and to evaluate the effects of varying forms of preparing soil samples and scanning with pXRF on the resulting values in Brazilian soils. Soils were scanned in five conditions in-field (in situ) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil chemical properties; Proximal sensor; Sulfuric acid digestion analysis; Soil properties prediction; Oxides.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100080
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Urochloa decumbens growth and P uptake as affected by long-term phosphate fertilization, mycorrhizal inoculation and historical land use in contrasting Oxisols of the Brazilian Cerrado Ciência e Agrotecnologia
Motta,Paulo Emílio Ferreira da; Siqueira,José Oswaldo; Ribeiro,Bruno Teixeira; Silva,Sérgio Henrique Godinho; Poggere,Giovana Clarice; Curi,Nilton.
ABSTRACT In the fertility management of highly weathered-leached Brazilian Oxisols, P is the most limiting macronutrient. A greenhouse experiment was conducted with the objective to evaluate the influence of the interaction between P doses, mycorrhizal inoculation and historical land use on Urochloa decumbens growth and P uptake in four Oxisols with contrasting chemical, physical and mineralogical properties. The plants were cultivated in plastic pots containing 4 kg of soil in a completely randomized design, four replications and 2x2x2 factorial scheme: with two P doses; with and without mycorrhizal inoculation; soils cultivated for long periods and non-cultivated (under native vegetation). There were two plantings of ten weeks each. Shoot dry mater,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Long-term cultivation; Latosols; Available P..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200209
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Xanthic- and Rhodic-Acrudoxes under cerrado vegetation: differential internal drainage and covarying micromorphological properties Ciência e Agrotecnologia
Skorupa,Alba Lucia Araujo; Tassinari,Diego; Silva,Sérgio Henrique Godinho; Poggere,Giovana Clarice; Zinn,Yuri Lopes; Curi,Nilton.
ABSTRACT Soil internal drainage plays a major role in soil genesis, and it is mostly dependent on topography. However, the existence of sedimentary and meta-sedimentary rock strata with variable dip angle allows for strong differences in internal drainage for identical topographies, which result in a marked differentiation in the properties of overlain soils. This work aimed to investigate the micromorphology of soils formed from different dip angles of rock strata and their relationships to internal drainage, in Minas Gerais, Brazil. Over horizontal strata, a Xanthic Acrudox lacking hematite and with blocky structure has developed. Over strata with 45° dip angle, strong drainage has resulted in intense desilication, forming a Rhodic Acrudox having...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil genesis; Xanthization; Rubefication; Plinthite; Saprolith.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000400443
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Zinc, copper and manganese availability in soils treated with alkaline sewage sludge from Paraná state (Brazil) Ciência e Agrotecnologia
Dalpisol,Maristela; Serrat,Beatriz Monte; Motta,Antonio Carlos Vargas; Poggere,Giovana Clarice; Bittencourt,Simone; Barbosa,Julierme Zimmer.
ABSTRACT In Paraná, most of the sludge generated in sewage treatment plants is subjected to the prolonged alkaline stabilization process. Although it is known that the alkaline sewage sludge contains micronutrients such as Zn, Cu and Mn, little is known about the availability of these elements in soils treated with this type of sewage sludge. Thus, the objective of the study was to evaluate the influence of alkaline sewage sludge from Paraná on Zn, Cu and Mn availability in soils. Twenty sewage treatment plants were selected throughout Paraná, where alkaline sewage sludge and the most representative agricultural soil of the each region were collected. Each soil was incubated for 60 days with alkaline sewage sludge rates (0, 10, 20, 40, and 80 Mg ha-1) from...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acid soils; Organic residues; Recycling; Micronutrients..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000100081
Registros recuperados: 8
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