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3D soil void space lacunarity as an index of degradation after land use change Agronomy
Santos, Carlos Renato dos; Antonino, Antônio Celso Dantas; Heck, Richard John; Lucena, Leandro Ricardo Rodrigues de; Oliveira, Alex Cristóvão Holanda de; Silva, Antonio Samuel Alves da; Stosic, Borko; Menezes, Romulo Simões Cezar.
In this work, lacunarity analysis is performed on soil pores segmented by the pure voxel extraction method from soil tomography images. The conversion of forest to sugarcane plantation was found to result in higher sugarcane soil pore lacunarity than that of native forest soil, while the porosity was found to be lower. More precisely, this study shows that native forest has more porous soil with a more uniform spatial distribution of pores, while sugarcane soil has lower porosity and a more heterogeneous pore distribution. Moreover, validation through multivariate statistics demonstrates that lacunarity can be considered a relevant index of clustering and can explain the variability among soils under different land use systems. While porosity by itself...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lacunarity; Soil porosity; Impact of land use change. lacunarity soil porosity impact of land use change.
Ano: 2020 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42491
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Atributos físicos de um Hapludox em função de sistemas de produção integração lavoura-pecuária (ILP), sob plantio direto. Repositório Alice
SPERA, S. T.; SANTOS, H. P. dos; FONTANELI, R. S.; TOMM, G. O..
2010
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Integração lavoura-pecuária; ILP; Densidade de solo; Porosidade; Lay farming; Soil bulk density; Soil porosity.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/926530
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Atributos físicos de um Hapludox em função de sistemas de produção integração lavoura-pecuária (ILP), sob plantio direto - DOI: 10.4025/actasciagron.v32i1.926 Agronomy
Spera, Silvio Tulio; EMBRAPA; Santos, Henrique Pereira dos; EMBRAPA; Fontaneli, Renato Serena; EMBRAPA; Tomm, Gilberto Omar; EMBRAPA.
Alguns atributos físicos do solo foram avaliados, após oito anos da instalação do experimento (1995 a 2003), num Latossolo Vermelho distrófico típico, em Coxilha, Estado do Rio Grande do Sul, em seis sistemas de produção de grãos com pastagens anuais de inverno e de verão: sistema I (trigo-soja / pastagem de aveia preta + ervilhaca-milho); sistema II (trigo-soja / pastagem de aveia preta + ervilhaca + azevém-milho); sistema III (trigo-soja / pastagem de aveia preta + ervilhaca-pastagem de milheto); sistema IV (trigo-soja / pastagem de aveia preta + ervilhaca + azevém-pastagem de milheto); sistema V (trigo-soja / aveia branca-soja / pastagem de aveia preta + ervilhaca-pastagem de milheto); e sistema VI (trigo-soja / aveia branca-soja / pastagem de aveia...
Palavras-chave: 5.01.00.00-9 Agronomia integração lavoura/pecuária; Densidade de solo; Porosidade em experiência na área de Agronomia com ênfase em Física do Solo atuando principalmente nos seguintes temas: cerrado integração lavoura-pecuária uso da terra aptidão agrícola e sistema plantio direto. lay farming; Soil bulk density; Soil porosity.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/926
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Chemical and hydrophysical attributes of an Oxisol under coffee intercropped with brachiaria in the Cerrado PAB
Rocha,Omar Cruz; Ramos,Maria Lucrécia Gerosa; Veiga,Adriano Delly; Guerra,Antonio Fernando; Bartholo,Gabriel Ferreira; Rodrigues,Gustavo Costa; Silva,Juliano Escobar da.
Abstract The objective of this work was to evaluate the effect of irrigation and of the presence of brachiaria (Urochloa decumbens) between coffee (Coffea arabica) rows on coffee yield and on chemical and hydrophysical attributes of a Typic Haplustox. The study was conducted in the Cerrado region in Planaltina, Brasília, DF, Brazil, in a randomized complete block design, arranged in split-split plots, with four replicates. Water regimes (irrigated or rainfed) were assigned to the main plots, inter-row management systems to the subplots, and soil layers to the sub-subplots. The following soil attributes were determined: total organic carbon, total nitrogen, C/N ratio, carbon and nitrogen stocks, bulk density, aggregate stability, total porosity,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea arabica; Urochloa decumbens; Cover crops; Soil physical quality; Soil porosity; Water availability.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901476
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Condições físico-hídricas de Planossolo cultivado com soja em plantio direto e preparo convencional. Repositório Alice
RIBEIRO, P. L.; BAMBERG, A. L.; REIS, D. A.; OLIVEIRA, A. C. B. de.
2016
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Glycine max; Minimal tillage; Soil water availability; Soil porosity; Lowlands; Floodplains; Glycine max; Minimal tillage; Soil water availability; Soil porosity; Lowlands; Floodplains.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1057333
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Cultivares de soja sob plantio direto em Latossolo Vermelho compactado - DOI: 10.4025/actasciagron.v31i4.851 Agronomy
Giarola, Neyde Fabíola Balarezo; UEPG; Brachtvogel, Elizeu Luiz; UNIOESTE; Fontaniva, Silvano; UNIOESTE; Pereira, Regina Alves; UNIOESTE; Fioreze, Samuel Luiz; UNIOESTE.
O processo de compactação pode modificar os atributos físicos do solo a ponto de limitar o potencial genético de desenvolvimento de culturas agrícolas ou de cultivares mais sensíveis. O objetivo deste trabalho foi avaliar, em Latossolo Vermelho Eutroférrico típico, a resposta de parâmetros de produção de cultivares de soja (Glycine Max L. Merrill) e atributos físicos do solo ao sistema plantio direto em condições de lavoura e com compactação adicional. O estudo foi conduzido na C-Vale Cooperativa Agroindustrial, em Palotina, Estado do Paraná. Foram avaliados dois tratamentos de solo: sistema plantio direto sem compactação adicional (SPD-C0) e sistema plantio direto com compactação adicional (PD-C1), e cinco cultivares de soja: (1) Coodetec 204, (2)...
Tipo: Pesquisa Empirica de Campo Palavras-chave: 5.01.03.04-0 Produção de Mudas densidade do solo; Porosidade do solo; Glycine max L. Merrill; Compactação do solo 5.01.01.06-4 bulk density; Soil porosity; Glycine max L. Merril; Soil compaction.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/851
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Estado de compactação do solo em áreas cultivadas no sistema de plantio direto. Repositório Alice
GOEDERT, W.J.; SCHERMACK , M.J.; FREITAS, F.C. de.
Avaliações do estado de compactação do solo foram realizadas em área experimental e em gleba de lavoura, em duas propriedades situadas no Distrito Federal, que vêm empregando o sistema de plantio direto por longo período. Foram utilizados dois métodos: o da densidade e o da resistência mecânica à penetração em camadas do solo. Os resultados revelaram que não ocorreu compactação, o que pode ser atribuído às boas características físicas originais do solo e ao adequado manejo das lavouras.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Densidade do solo; Porosidade do solo; Resistência mecânica à penetração; Cerrado; Soil density; Soil porosity; Mechanical resistance to penetration; Savannah.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/106771
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Gamma-ray computed tomography to evaluate changes in the structure of a clayey soil due to agricultural traffic - doi: 10.4025/actasciagron.v33i3.4727 Agronomy
Pires, Luiz Fernando; Universidade Estadual de Ponta Grossa.
A first generation gamma-ray computed tomography (CT) equipped with a 137Cs source was used to investigate changes in soil structure due to agricultural machinery traffic. Core samples with volume of 55 cm3 were collected at the surface (0-10 cm) of a Brazilian clayey soil. Significant alterations in soil structure occurred after two passages of tractor wheels, with important decreases in soil porosity. CT data allowed a continuous analysis of soil bulk density and also soil porosity distribution for 1.25 and 1.20 mm layers, which cannot be provided by traditional methods commonly used in soil physics.
Palavras-chave: 5.01.01.02-1; 3.09.01.00-6 gamma-ray attenuation; Soil bulk density; Soil porosity; Image analysis; Soil physics Física dos Solos gamma-ray attenuation; Soil bulk density; Soil porosity; Image analysis; Soil physics.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4727
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Hydro-Physical Properties of a Typic Hapludult under the Effect of Rice Husk Ash Rev. Bras. Ciênc. Solo
Islabão,Gláucia Oliveira; Lima,Cláudia Liane Rodrigues de; Vahl,Ledemar Carlos; Timm,Luis Carlos; Teixeira,Juliana Brito da Silva.
ABSTRACT The combustion of rice husk generates a partially burnt mixture called rice husk ash (RHA) that can be used as a source of nutrients to crops and as a conditioner of soil physical properties. The objective of this study was to evaluate the effect of RHA levels on the hydro-physical properties of a Typic Hapludult. The experimental design was composed of random blocks with four replications, which comprised plots of 24 m2 and treatments with increasing RHA rates: 0, 40, 80 and 120 Mg ha-1. Undisturbed soil samples were collected in the soil layers of 0.00-0.10 and 0.10-0.20 m after nine months of RHA application, using steel cylinders (0.03 m of height and 0.047 m of diameter). These samples were used to determine soil bulk density (Bd), total soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bulk density; Soil porosity; Available water capacity; Soil compressibility; Soil aggregation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100407
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Influence of physical attributes and pedotransfer function for predicting water retention in management systems AGRIAMBI
Auler,André C.; Pires,Luiz F.; Pineda,Maria C..
ABSTRACT The aims of this study were to evaluate the effects of the soil structural physical attributes on the water retention and to develop pedotransfer functions (PTFs) for the estimation of the soil water content (θ) at different matric potentials of a Dystrophic Red Latosol (Hapludox) under conventional tillage (CT) and no-tillage (NT) soil management systems. The effects of long-term CT and NT (over 25 years) management on the soil bulk density (BD), total porosity (TP), macroporosity (Ma), microporosity (Mi) and water retention were investigated. The PTFs were developed to predict θ and used to evaluate the soil water retention curve only for the NT system. The NT system was characterized by smaller values of the soil BD and higher values of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: No-tillage; Conventional tillage; Soil porosity.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100746
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Irrigation with domestic wastewater: a multivariate analysis of main soil changes Rev. Bras. Ciênc. Solo
Gloaguen,Thomas Vincent; Gonçalves,Roberta Alessandra Bruschi; Forti,Maria Cristina; Lucas,Yves; Montes,Célia Regina.
Irrigation with treated domestic sewage wastewater (TSE) is an agricultural practice to reduce water requirements of agroecossystems and the nutrient load impact on freshwaters, but adverse effects on soil chemical (salinization, sodification, etc.) and soil physical properties (alteration in soil porosity and hydraulic conductivity, etc.) have been reported. This study aimed to define some relationships among these changes in an Oxisol using multivariate analysis. Corn (Zea mays L.) and sunflower (Helianthus annuus L.) were grown for two years, irrigated with TSE. The following soil properties were determined: Ca2+; Mg2+; Na+; K+ and H + Al contents, cationic exchangeable capacity (CEC), sum of bases (SB), base saturation (V), texture (sand, silt and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil porosity; Soil sodicity; Factor analysis.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400038
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Liquid Bovine Biofertilizer and Cultivation Effects on the Porosity of a Typic Haplocambids as a Function of Cultivation and Dose Rev. Bras. Ciênc. Solo
Alencar,Thiago Leite de; Chaves,Arilene Franklin; Freire,Alcione Guimarães; Assis Júnior,Raimundo Nonato de; Mota,Jaedson Cláudio Anunciato.
ABSTRACT The soil porous space is where processes related to gases and soil solution occur, and provides an adequate guide for agricultural practices. This study aimed to evaluate the integrated effects of cultivation and the application of liquid bovine biofertilizer on the porous network of a Typic Haplocambids (Cambissolo Háplico Ta Eutrófico) cultivated with figs (Ficus carica L.). Four treatments were evaluated (under fig cultivation with the application of 20, 40 and 60 % of biofertilizer through irrigation, a control treatment without biofertilizer and an additional treatment – soil under natural vegetation). Disturbed and undisturbed soil samples were collected in three soil layers (0.0-0.1, 0.1-0.2 and 0.2-0.3 m) with four replicates. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil physics; Soil porosity; Organic matter.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100414
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Nanoparticles and nanostructure morphology of a Red Latosol in rehabilitation AGRIAMBI
Souto Filho,Sebastião N.; Alves,Marlene C.; Monreal,Carlos M.; Bonini,Carolina dos S. B..
ABSTRACT In the process of rehabilitation of a soil, two points are fundamental: to define optimal interferences to accelerate the rehabilitation process and the most appropriate indicators to diagnose its quality. Therefore, this study aimed to investigate the nanoparticle and nanostructure morphology of a Red Latosol in rehabilitation for eight years. The soil under rehabilitation process was compared with its natural state and degraded. In the topsoil, nanoparticles (ø < 100 nm) and fine clay (ø < 200 nm) were quantified and the nanostructures morphology was studied using images obtained by transmission electron microscopy. Soil porosity, bulk density and carbon, nitrogen and hydrogen contents were analyzed. It was found that the nanoparticles and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Degraded soil; Sewage sludge; Electron microscopy; Soil porosity.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000800530
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Nitrogen availability, water-filled pore space, and N2O-N fluxes after biochar application and nitrogen fertilization PAB
Carvalho,Márcia Thaís de Melo; Madari,Beáta Emoke; Bastiaans,Lammert; Oort,Pepijn Adrianus Johannes van; Leal,Wesley Gabriel de Oliveira; Souza,Diego Mendes de; Santos,Roberto Carlos dos; Matsushige,Iva; Maia,Aline de Holanda Nunes; Heinemann,Alexandre Bryan; Meinke,Holger.
Abstract The objective of this work was to investigate the impact of the application of wood biochar, combined with N fertilizations, on N2O-N fluxes, nitrogen availability, and water-filled pore space (WFPS) of a clayey Oxisol under rice (wet season) and common bean (dry season) succession. Manual static chambers were used to quantify N2O-N fluxes from soil immediately after a single application of wood biochar (32 Mg ha-1) and after four crop seasons with N applications (90 kg ha-1 N). Soil ammonium (N-NH4+) and nitrate (N-NO3-) availability, as well as WFPS, was measured together with N2O-N fluxes. There was no interaction between biochar and N fertilization regarding N2O-N fluxes in any of the four seasons monitored, although these fluxes were clearly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cropping systems; Gas fluxes; Greenhouse gases; Nitrate and ammonium; Soil amendment; Soil porosity.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901203
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Perdas de solo, nutrientes, matéria orgânica e efeitos microestruturais em gissolo Vermelho-Amarelo sob chuva simulada. Repositório Alice
SCHAEFER, C. E. R.; SILVA, D. D.; PAIVA, K. W. N.; PRUSKI, F. F.; ALQUERQUE FILHO, M. R.; ALBUQUERQUE, M. A..
Estudo experimental com simulador de chuva foi conduzido em área de Argissolo Vermelho-Amarelo caulinítico, em Viçosa, MG, com intensidade de precipitação de 60 mm h-1 e seis aplicações sucessivas, espaçadas de 12 horas. Caracterizou-se a evolução do selamento superficial e das perdas de nutrientes, solo e matéria orgânica em razão de diferentes porcentagens de cobertura (0, 20, 40, 80 e 100%) em cultivo morro abaixo (declividade média de 9,5%), em resposta à energia cinética decorrente da precipitação. As perdas totais de solo foram superiores a 11 t ha-1 nos tratamentos com porcentagem de cobertura entre 0 e 40%, reduzindo-se a pouco mais de 5 t ha-1 com 80% até zero no tratamento 100% coberto com Bidim. As perdas de nutrientes seguiram a ordem...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Porosidade do solo; Permeabilidade; Degradação do solo; Erosão; Soil porosity; Permeability; Soil degradation; Erosion.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/107322
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Physical attributes of distroferric red latosol under four eucalypt species over the long term Ciência e Agrotecnologia
Braga,Rafael Malfitano; Dias Junior,Moacir de Souza; Braga,Francisco de Assis; Protásio,Thiago de Paula.
Planted forests have been increasingly highlighted in the Brazilian scenario, maintaining status regarding their environmental effects, among them those related with soils. The objectives of this work were to evaluate and to compare the physical attributes of a typic distroferric Red Latosol under Eucalyptus cloeziana, E. grandis, E. Pilularis and Corymbia maculata coverage, 37 years after being planted at the Federal University of Lavras campus. The soil profiles were sampled down to 1 m depth in order to analyze their particle-size distribution, porosity, structure and water retention. The results were submitted to analysis of variance, Scott-Knott multiple means comparison test, correlations and linear regression. The profiles presented appropriated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil porosity; Soil structure; Water retention in soil.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000400004
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Physical Properties of Soil Structures Identified by the Profil Cultural under Two Soil Management Systems Rev. Bras. Ciênc. Solo
Macedo,Sônia de Fátima Schilickmann; Grimaldi,Michel; Medina,Cristiane Conti; Cunha,José Edézio da; Guimarães,Maria de Fátima; Tavares Filho,João.
ABSTRACT Soil structure plays an important role in water retention, infiltration capacity, porosity, and penetration resistance. The aim of this study was to evaluate the unsaturated hydraulic conductivity and physical properties of Oxisol soils (bulk density and macro-, micro-, and total porosity) in the structures identified using the profil cultural method in areas under two different management practices (perennial pasture and sugarcane). Three pits were dug in each plot to find out how homogeneous morphological structural units (HMSU) were organized in the soil. Next, unsaturated hydraulic conductivity (Ki) was measured in situ inside each HMSU using a triple-ring infiltrometer at multiple suction. Six samples were collected (two samples for each kind...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil use; Compaction; Soil bulk density; Soil porosity.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100524
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Physical properties of soils and soybean yields after planting cover crops REA
SANTOS,DIEGO DOS; SOUZA,EDUARDO G. DE; NÓBREGA,LÚCIA H. P.; BAZZI,CLAUDIO L.; QUEIROZ,FERNANDO N. DE.
Cover crops are important for improving soil quality. However, soil properties usually have some spatial dependence. Thus, this study aimed to evaluate the effect of winter cover crops on physical properties of soil and soybean yields using thematic maps. Five winter treatments were used: black oats; intercropping 1 (forage turnips and black oats); intercropping 2 (forage turnips, black oats and common vetch); wheat; and control. Macroporosity, microporosity, total porosity, bulk density and water content of the soil from 0 - 0.1 m depths were evaluated after the winter cover crop management. Soybeans were sown over the entire area in the summer after the winter cover crop management, and the soybean yield was determined for each treatment. Maps for each...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil porosity; Bulk density; Crop rotation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000200280
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Pore size distribution in soils irrigated with sodic water and wastewater Rev. Bras. Ciênc. Solo
Gonçalves,Roberta Alessandra Bruschi; Gloaguen,Thomas Vincent; Folegatti,Marcos Vinicius; Libardi,Paulo Leonel; Lucas,Yves; Montes,Célia Regina.
Soil porosity, especially pore size distribution, is an important controlling factor for soil infiltration, hydraulic conductivity, and water retention. This study aimed to verify the effect of secondary-treated domestic wastewater (STW) on the porosity of a sandy loam Oxisol in the city of Lins, state of São Paulo, Brazil. The two-year experiment was divided into three plots: soil cultivated with corn and sunflower and irrigated with STW, soil cultivated and irrigated with sodic groundwater, and non-irrigated and non-cultivated soil (control). At the end of the experiment, undisturbed core samples were sampled from 0 to 2.0 m (8 depths). The water retention curves were obtained by tension plates and Richard's pressure plate apparatus, and the pore size...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sodic wastewater; Soil porosity; Clay dispersion; Soil sodicity.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300011
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Pore system changes of damaged Brazilian oxisols and nitosols induced by wet-dry cycles as seen in 2-D micromorphologic image analysis Anais da ABC (AABC)
Pires,Luiz F.; Reichardt,Klaus; Cooper,Miguel; Cássaro,Fabio A.M.; Dias,Nivea M.P.; Bacchi,Osny O.S..
Soil pore structure characterization using 2-D image analysis constitutes a simple method to obtain essential information related to soil porosity and pore size distribution (PSD). Such information is important to infer on soil quality, which is related to soil structure and transport processes inside the soil. Most of the time soils are submitted to wetting and drying cycles (W-D), which can cause important changes in soils with damaged structures. This report uses 2-D image analysis to evaluate possible modifications induced by W-D cycles on the structure of damaged soil samples. Samples of three tropical soils (Geric Ferralsol, GF; Eutric Nitosol, EN; and Rhodic Ferralsol, RF) were submitted to three treatments: 0WD, the control treatment in which...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil bulk density; Soil water content; Soil porosity; Micromorphology; Soil structure; Compaction.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000100016
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