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| Registros recuperados: 842 | |
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| SOUZA,Luma Castro de; LIMA,Herdjania Veras de; RODRIGUES,Sueli; KERN,Dirse Clara; SILVA,Álvaro Pires da; PICCININ,Jorge Luiz. |
| ABSTRACT Although anthropogenic dark earth (ADE) is generally found in non-floodable land, it also occurs on floodplains but, there is no information about the chemical and physical characteristics of ADE in this environment. In this study, we propose to check the hypothesis that a Gleysol, classified as ADE, presents improved chemical and physical conditions than an adjacent soil, no anthropogenic. Thus, the objective of this study was to characterize the chemical and physical properties of the top layer of two ADE profiles in a Gleysol and compare them with an adjacent soil. Samples were taken from two areas classified as ADE in Bragança, Pará State, Brazil, at the "Jabuti" archaeological site, and from an adjacent non-anthropogenic site. Disturbed and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthropic horizon; Soil organic carbon; Soil quality; Floodplain soils. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400337 |
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| Escosteguy, Pedro Alexandre; Tissot, Bernardo da Silva; Cherubini, Rafael Mariath; Pauletto, Cristiano; Scheffer-Basso, Simone Meredith. |
| Poultry manure is used as fertilizer in natura, but little is known about whether it contaminates the soil with pathogenic organisms. The aim of this study was to assess the effects of organic, organomineral and mineral fertilizers on soil contamination by enteric pathogens, using poultry manure as the organic fertilizer. Manure was applied in field experiments at rates of 7.0 ton. ha-1 (maize crop, 2008/2009), 8.0 ton. ha-1 (wheat crop, 2009) and 14 ton. ha-1 (maize crop, 2010/2011). Organomineral fertilizer was applied at the same rates but was comprised of 50% manure and 50% mineral fertilizer. At 30 and 70 days after fertilization, the organic fertilizer and the upper 0-5 cm layer of the soil were tested for the presence of helminth eggs and larvae and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 50101005 soil contamination; Soil quality; Triticum aestivum; Zea mays.. |
| Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19387 |
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| Feitosa,Jardenia R.; Mendes,Alessandra M.S.; Olszevski,Nelci; Cunha,Tony J.F.; Cortez,Jorge W.; Giongo,Vanderlise. |
| The purpose of this study was to evaluate the effects of organic farming of wine grapes under physical and chemical characteristics of Ultisol Brazil's northeastern semiarid region. The samples of soil were collected from the row and interrow of the farming and from the fallow area, at the depths of 0.0-0.10, 0.10-0.20, 0.20-0.30 and 0.30-0.60 m. The samples were collected at six and twelve months after the culture implementation to evaluate the state of aggregation, bulk density and total soil porosity, flocculation index and organic matter contents, calcium, magnesium, and sodium. The results were submitted to statistical analysis. The adoption of organic farming contributed to the soil aggregation process. The bulk density and total soil porosity did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aggregate stability; Organic farming; Soil quality; Vitiviniculture. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100483 |
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| ROCHA,SANDRA M.B.; ANTUNES,JADSON E.L.; ARAUJO,FABIO F. DE; MENDES,LUCAS W.; SOUSA,RICARDO S. DE; ARAUJO,ADEMIR S. F. DE. |
| Abstract: Different physiognomies across the Cerrado could influence the microbial C:N:P ratio in the soil since these physiognomies present different abundance and diversity of plant species. Thus, the aim of this study was to evaluate the microbial C:N:P ratio in soil across three different physiognomies of Cerrado in the Northeast, Brazil, namely campo graminóide (dominance of grasses), cerrado stricto sensu (dominance of grasses, shrubs, low trees, and woody stratum), and cerradão (dominance of woody stratum). Campo graminóide was characterized by lower values of total organic C, N, microbial C:P, N:P, and soil C:N. Cerrado stricto sensu presented average values for most of the measured parameters, while cerradão presented higher values of microbial C,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbial biomass; Soil quality; Organic matter; Tropical soil. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700857 |
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| Ortiz,Danielle Cristina; Santos,Marcielli Aparecida Borges dos; Oliveira Filho,Luís Carlos Iuñes de; Pompeo,Pâmela Niederauer; Niemeyer,Júlia Carina; Klauberg Filho,Osmar; Baretta,Carolina Riviera Duarte Maluche; Sampietro,Jean Alberto; Baretta,Dilmar. |
| Abstract: The aim of this study was to evaluate the influence of soil use on the morphological diversity of springtails and to verify the relationship of these organisms with soil physical, chemical, and microbiological properties. Samples were collected in the Southern region of Santa Catarina, involving three municipalities: Orleans, Lauro Müller, and Siderópolis, in the land use systems (LUS) of native forest (NF), Eucalyptus plantation (EP), pasture (PA), integrated crop-livestock (ICL), and no-tillage (NT). Soil samples to determine edaphic properties and pitfall traps were collected in winter and summer, in the same areas. The collected springtails were counted and morphotyped and the data were analyzed through abundance, Shannon-Wiener diversity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Collembola morphotypes; Bioindicators; Soil quality; Edaphic mesofauna. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000300207 |
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| Ferreira,Enderson Petrônio de Brito; Wendland,Adriane; Didonet,Agostinho Dirceu. |
| Aiming to evaluate the effects of soil management and cover crops on microbial indicators of soil quality, an experiment was carried out under field conditions in which common bean and corn were cropped under no-tillage (NT) and conventional tillage (CT) after sunnhemp, velvet bean, pigeon pea, jack bean, sorghum and fallow (weeds). The basal soil respiration (BSR), C and N of the microbial biomass (Cmic and Nmic), metabolic quotient (qCO2), total enzymatic activity (TEA), β-glycosidase (β-GA) activity and acid phosphatase activity (APA) were evaluated in samples collected in 0-0.10 m depth. Cmic, qCO2, TEA, β-GA and APA were more sensitive in determining the effects caused by tillage and cover crops. Although the cover crops had not provided a remarkably... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Green manure; Cover crops; Soil quality; Sustainability. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052011000400024 |
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| Rachid,C.T.C.C; Pires,C.A; Leite,D.C.A; Coutinho,H.L.C; Peixoto,R.S; Rosado,A.S; Salton,J; Zanatta,J.A; Mercante,F.M; Angelini,G.A.R; Balieiro,Fabiano de Carvalho. |
| Abstract The sugarcane in Brazil is passing through a management transition that is leading to the abolition of pre-harvest burning. Without burning, large amounts of sugarcane trash is generated, and there is a discussion regarding the utilization of this biomass in the industry versus keeping it in the field to improve soil quality. To study the effects of the trash removal on soil quality, we established an experimental sugarcane plantation with different levels of trash over the soil (0%, 50% and 100% of the original trash deposition) and analyzed the structure of the bacterial and fungal community as the bioindicators of impacts. The soil DNA was extracted, and the microbial community was screened by denaturing gradient gel electrophoresis in two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sugarcane trash; Soil quality; Soil microbiology; Fungal community structure; Green cane. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000200322 |
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| Andrade,Andréia Patricia; Rauber,Luiz Paulo; Mafra,Álvaro Luiz; Baretta,Dilmar; Rosa,Márcio Gonçalves da; Friederichs,Augusto; Mafra,Maria Sueli Heberle; Casara,Ana Cláudia. |
| ABSTRACT: Successive applications of pig slurry and poultry manure can improve the soil structure, according to the land use conditions and amounts applied. This study evaluated the effect of manure fertilization on the physical properties and organic carbon of a Rhodic Kandiudox. Treatments included land use and management and time of pig slurry and poultry litter application, namely: native forest (NF); yerba mate after 20 years of animal waste application (YM20); pasture after 15 years of application (P15); grassland after 20 years of manuring (PP20); grassland after 3 years of manuring (P3); pasture without application (P0), maize after 20 years of application (M20); and maize after 7 years of application (M7). Soil samples were collected in the 0-5,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal waste; Soil quality; Structure. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000500809 |
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| Santos,Djavan Pinheiro; Schossler,Thiago Rodrigo; Santos,Isis Lima dos; Melo,Nathália Batista; Santos,Glenio Guimarães. |
| ABSTRACT: The aim of this study was to characterize the soil macrofauna under different crop systems and compare them to the macrofauna under the native vegetation of a Cerrado/Caatinga ecotone in southwestern Piauí State, Brazil. The areas studied included areas under sweetsop cultivation (Annona squamosa L.), andropogon grass with three years of use, andropogon grass with six years of use, pivot-irrigated corn, Napier grass, and native vegetation. In each area, soil layers of 0-0.1, 0.1-0.2, and 0.2-0.3m, including the surface litter, were evaluated following the Tropical Soil Biology and Fertility Program (TSBF) recommendations. The soil macrofauna from the different land-use systems were identified to the family level, and the mean density of each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioindicators; Napier grass; Irrigated crop; Soil invertebrates; Soil quality. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000404 |
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| Oliveira,Jacineumo F. De; Rodrigues,Fernando N.; Fia,Ronaldo; Vilela,Hévelyn S.; Landim,Daniela V.. |
| ABSTRACT The aim of this study was to evaluate the soil chemical properties submitted to fertigation with slaughterhouse (SW) and dairies (DW) wastewater. The experiment was conducted in the Environmental Engineering Center and Sanitary of UFLA/MG in PVC columns filled with Dark Red Latosol (Oxisol) and randomly distributed. The treatments applied with nitrogen based load (300 kg ha years-1 of N) consisted of four doses of SW and DW (100, 200, 300 and 400% of the recommendation) and AQT0 control at random. The soil was collected at a depth of 0.30 m and, subsequently, characterized in terms of physical, chemical and physicochemical. The application of treatment of the largest irrigation of DW provided, after 120 days of monitoring, N concentration of 1.85... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil quality; Fertigation; Plant nutrition; Agroindustrial wastewater. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601244 |
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| Arcoverde,Sálvio N. S.; Cortez,Jorge W.; Olszevski,Nelci; Salviano,Alessandra M.; Giongo,Vanderlise. |
| ABSTRACT The inadequate agricultural management in the semiarid region of northeastern Brazil, associated with the fragility of most soils, has caused degradation of the quality of this resource. This study aimed to evaluate the quality of Quartzipsamments under different uses through the multivariate analysis of chemical and physical attributes. Five areas were selected: four of them with agricultural use (onion, banana, cassava, and corn) and the other with Caatinga. Soil samples were collected at depths of 0.00–0.10, 0.10–0.20, and 0.20–0.40 m for chemical and physical analyses. The data were submitted to descriptive analysis and then to the multivariate analysis using the principal component analysis (PCA) technique and Ward’s clustering method. PCA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Principal component; Quality indicator; Soil quality; Sandy soils. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400457 |
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| Registros recuperados: 842 | |
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