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Assessment of Efficiency and Adequacy of Retention Terraces Rev. Bras. Ciênc. Solo
Miranda,Antônio Calazans Reis; Silva,Danilo Paulúcio da; Mello,Eloy Lemos de; Pruski,Fernando Falco.
Due to losses caused by water erosion, the development of techniques that increase the efficiency of soil conservation practices is fundamental. Terracing of agricultural lands is an important conservation practice. Bearing in mind that improperly built terraces may negatively affect the landscape, the purpose of this work was to evaluate the efficiency as well as the adequacy of retention terraces. Assessments were performed in four terraces implanted in different states, all located in the mideastern region of the state of Minas Gerais. The water storage efficiency of the terraces was determined by comparing the effective with the required storage capacity, as established in the project. Proposals were also made for the adequacy of the assessed terraces,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water erosion; Surface runoff; Conservation practices; Terrace systems.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200027
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Characteristics of rainfall and erosion under natural conditions of land use in semiarid regions AGRIAMBI
Lima,Cleene A. de; Palácio,Helba A. de Q.; Andrade,Eunice M. de; Santos,Julio C. N. dos; Brasil,Paulilo P..
The characteristics of rainfall can provide important information for management and land use may also minimize the water erosion problems. This study was carried out to evaluate soil and water loss in erosion plots with different coverage, and the interference of natural rainfall characteristics on these processes. The experiment was carried out during the rainy season in the years of 2009 and 2010, on three erosion plots, each of 20 m², and under different land use conditions: native 'caatinga', thinned 'caatinga' and natural herbaceous cover. The rainfall was classified into three different rainfall patterns, characterized as early, intermediate and late. The predominant rainfall pattern for the two years under study was early rainfall with 47.6%,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rainfall intensity; Erosivity; Water erosion.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013001100014
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Diagnóstico hidrossedimentológico da Bacia do Rio Piquiri. Infoteca-e
LIMA, J. E. F. W.; LOPES, W. T. A.; SILVA, E. M. da; VIEIRA, M. R..
RESUMO: O conhecimento do comportamento hidrossedimentológico de uma bacia hidrográfica é fundamental para a adequada gestão e uso de seus recursos hídricos. Este traballho objetivou realizar, a partir dos dados hidrossedimentométricos da Bacia do Rio Piquiri, um diagnóstico sobre o seu comportamento hidrossedimentológico. Utilizando os dados fluviométricos e hidrossedimentométricos do banco de dados Hidro, sob gestão da Agência Nacional das Águas - ANA, foi estimado o potencial para produção ou deposição de sedimentos de cada trecho da bacia, aplicando o procedimento de balanço de massa. Foram identificados três trechos onde ocorre deposição de sedimentos na bacia: entre as estações Porto Carriel e Porto Guarani, no Rio Piquiri; entre as estações Porto...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Manejo da água; Sediment.; Bacia Hidrográfica; Erosão Hídrica; Hidrologia; Sedimento.; Qualidade da Água; Recurso Hídrico; Hydrology; Water quality; Water resources; Watersheds.; Water management; Water erosion.
Ano: 2004 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569087
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Erosive rainfall in Rio do Peixe Valley in Santa Catarina, Brazil: Part I - Determination of the erosivity index AGRIAMBI
Back,Álvaro J.; Pola,Augusto C.; Ladwig,Nilzo I.; Schwalm,Hugo.
ABSTRACT This study aimed to determine the rainfall erosivity index in the Valley of Rio do Peixe, in the state of Santa Catarina, Brazil. The data series of three rain gauge stations in the cities of Campos Novos, Videira, and Caçador were used to determine the rainfall erosivity based on the EI30 index and to adjust the equations in order to estimate the EI30 value from the rainfall coefficient. On average, it was observed that erosive rains represents 81.4-88.5% of the annual precipitation. The adjusted equations can be used to estimate rainfall erosivity in locations with only rainfall data. The regional equation specified for the erosivity estimation is EI30 = 74.23 Rc0.8087. The R factor is 8,704.8; 7,340.8; and 6,387.1 MJ mm ha-1 h-1 year-1 for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil loss; Soil conservation; Water erosion; Precipitation.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100774
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Erosive rainfall in the Rio do Peixe Valley in Santa Catarina, Brazil: Part II - Characteristics and temporal distribution pattern AGRIAMBI
Back,Álvaro J.; Pola,Augusto C.; Ladwig,Nilzo I.; Schwalm,Hugo.
ABSTRACT Exploring the characteristics of erosive rain is an important aspect of studying erosive processes, and it allows researchers to create more natural and realistic hydrological simulations. The objective of this study was to analyse the characteristics of erosive rain and to determine the temporal distribution pattern of erosive rainfall in the Valley of Rio do Peixe in the state of Santa Catarina, Brazil. Daily pluviograms from the meteorological stations located in the cities Campos Novos, Videira, and Caçador in Santa Catarina from 1984 to 2014 were utilized for this study. By studying rainfall that is classified as erosive, the values of kinetic energy, maximum intensity in thirty minutes, and the value of EI30 erosivity index were determined....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil conservation; Water erosion; Minimum tillage.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100780
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Erosive rainfall in the Rio do Peixe Valley: Part III - Risk of extreme events AGRIAMBI
Back,Álvaro J.; Pola,Augusto C.; Ladwig,Nilzo I.; Schwalm,Hugo.
ABSTRACT Understanding the risks of extreme events related to soil erosion is important for adequate dimensioning of erosion and runoff control structures. The objective of this study was to determine the rainfall erosivity with different return periods for the Valley of the Rio do Peixe in Santa Catarina state, Brazil. Daily pluviographic data series from 1984 to 2014 from the Campos Novos, and Videira meteorological stations and from 1986 to 2014 from the Caçador station were used. The data series of maximum annual rainfall intensity in 30 min, maximum annual erosive rainfall, and total annual erosivity were analyzed for each station. The Gumbel-Chow distributions were adjusted and their adhesions were evaluated by the Kolmogorov-Smirnov test at a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil conservation; Water erosion; Precipitation; Probability.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000100063
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Estimates of soil losses by the erosion potential method in tropical latosols Ciência e Agrotecnologia
Lense,Guilherme Henrique Expedito; Parreiras,Taya Cristo; Moreira,Rodrigo Santos; Avanzi,Junior Cesar; Mincato,Ronaldo Luiz.
ABSTRACT Water erosion is one of the main problems faced in coffee cultivation, as it promotes environmental degradation and crop yield decrease. Erosion estimates support the planning of conservation management practices and allowing determining the rates of soil losses. Thus, the objective of this paper was to estimate the soil loss by water erosion using the Erosion Potential Method in a sub-basin predominantly covered by coffee cultivation and then to compare the results with the Soil Loss Tolerance limits. The study area is the Coroado Stream Sub-basin, located at Alfenas Municipality, south of Minas Gerais, Brazil. The sub-basin presented an Erosion Coefficient of 0.272, indicating a predominance of low-intensity erosion. The total soil loss estimate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil conservation; Water erosion; Modeling..
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100225
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Influence of Conservation Tillage and Soil Water Content on Crop Yield in Dryland Compacted Alfisol of Central Chile Chilean J. Agric. Res.
Martinez G,Ingrid; Ovalle,Carlos; Del Pozo,Alejandro; Uribe,Hamil; Valderrama V,Natalia; Prat,Christian; Sandoval,Marco; Fernández,Fernando; Zagal,Erick.
Chilean dryland areas of the Mediterranean climate region are characterized by highly degraded and compacted soils, which require the use of conservation tillage systems to mitigate water erosion as well as to improve soil water storage. An oat (Avena sativa L. cv. Supernova-INIA) - wheat (Triticum aestivum L. cv. Pandora-INIA) crop rotation was established under the following conservation systems: no tillage (Nt), Nt + contour plowing (Nt+Cp), Nt + barrier hedge (Nt+Bh), and Nt + subsoiling (Nt+Sb), compared to conventional tillage (Ct) to evaluate their influence on soil water content (SWC) in the profile (10 to 110 cm depth), the soil compaction and their interaction with the crop yield. Experimental plots were established in 2007 and lasted 3 yr till...
Tipo: Journal article Palavras-chave: Neutron probe; Penetrometer resistance; Oat; Subsoiling; Water erosion; Wheat.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400018
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LOSS OF WATER AND NUTRIENTS IN DIFFERENT SOIL TILLAGE SYSTEMS SUBJECTED TO NATURAL RAINFALL IN THE STATE OF MATO GROSSO, BRAZIL REA
Leite,Marcelo H. S.; Couto,Eduardo G.; Amorim,Ricardo S. S.; Scaramuzza,José F..
ABSTRACT The aim of this study was to evaluate the loss of water and nutrients by laminar runoff in different soil tillage systems subjected to natural rainfall. Five experimental plots were established for the cultivation of cotton in the city of Campo Verde - MT, with the following treatments: CTDP = conventional soil tillage and planting of the cotton in the direction of the slope; CTCP = conventional tillage and contour planting; CP = tillage of soil with a disk harrow and a leveling harrow, followed by contour planting; CoP = tillage by two passes of a leveling harrow followed by contour planting; MTCP = minimum tillage with contour planting. The losses of water by laminar runoff in were determined by the stored volume and samples were taken to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Laminar runoff; Losses of nutrients; Losses of potassium (K); Transports nutrients; Water erosion.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000600864
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Model to support the evaluation of the impact of the use and management of the soil on the water balance - doi: 10.4025/actasciagron.v34i4.14733 Agronomy
Mello, Eloy Lemos de; Universidade Estadual do Oeste do Paraná; Pruski, Fernando Falco; Universidade Federal de Viçosa; Bertol, Ildegardis; Universidade do Estado de Santa Catarina; Costa, Lucas Mucida; Universidade Federal de Viçosa; Menezes, Gleiph Ghiotto; Universidade Federal de Viçosa; Rodrigues, Nívia Carla; Universidade Federal de Viçosa.
The purpose of this work was to develop a hydrological model for the simulation of the water balance in agricultural areas. The model uses a double exponential equation to represent the rainfall profile and uses the Green-Ampt-Mein-Larson equation to estimate the soil water infiltration rate. To evaluate the model, monthly and yearly rainfall and runoff data were obtained from four experimental plots located at the State University of Santa Catarina, UDESC, in the period from 2003 to 2008. The four treatments were bare soil (BS), conventional tillage (CT), minimum tillage (MT) and no-tillage (NT). The simulation was carried out using two synthetic rainfall series, one adjusted on a monthly basis (SAMB) and the other adjusted on a daily basis (SADB). The...
Palavras-chave: Ciências Agrárias; Agronomia; Engenharia de Água e Solo; Conservação de Solo e Água 5.00.00.00-4; 5.03.02.00-0; 5.03.02.02-7 rrunoff; Infiltration; Water erosion; Hydrological modeling Ciências Agrárias; Engenharia de Água e Solo; Conservação de Solo e Água.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/14733
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Modeling of the Rainfall and R-Factor for Tocantins State, Brazil Rev. Bras. Ciênc. Solo
Avanzi,Junior Cesar; Viola,Marcelo Ribeiro; Mello,Carlos Rogério de; Giongo,Marcos Vinicius; Pontes,Lucas Machado.
ABSTRACT The state of Tocantins is inserted in the new Brazilian agricultural frontier and has shown enormous potential for expansion of the agricultural lands. However, there is a lack of more elaborate scientific information for better planning and guide agricultural activities, especially regarding the soil and water conservation. Tocantins has a relevant rainfall spatial variability and, consequently, rainfall erosivity. Thus, this work aimed to develop models to estimate the mean monthly and annual rainfall and means rainfall erosivity factor (R-factor) of the Universal Soil Loss Equation (USLE) for the state of Tocantins. For that, 97 historical series of daily rainfall were studied, considering a standard period of 25 years (1985-2009). The fitting...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water erosion; Geostatistics; Regression-kriging; Soil and water conservation; Mapping.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100524
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Multivariate Analysis of Erosivity Indices and Rainfall Physical Characteristics Associated with Rainfall Patterns in Rio de Janeiro Rev. Bras. Ciênc. Solo
Machado,Roriz Luciano; Carvalho,Daniel Fonseca de; Rouws,Janaina Ribeiro Costa; Almeida,Wilk Sampaio de; Oliveira,Paulo Tarso Sanches de.
ABSTRACT The identification of areas with greater erosive potential is important for planning soil and water conservation. The objective of this study was to evaluate the physical characteristics of rainfall events in the state of Rio de Janeiro, Brazil, and their interactions with rainfall patterns through multivariate statistical analysis. Rainfall depth, kinetic energy, 30-min intensity (I30), duration of rainfall events, and the erosivity indices KE >10, KE >25, and EI30 in 36 locations (stations) were subjected to principal component analysis (PCA) and canonical discriminant analysis (CDA). Based on evaluation of the respective historical series of hyetographs, it was found that the advanced pattern occurs with highest frequency (51.8 %),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water erosion; EI30; Canonical discriminant analysis.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100535
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NITROGEN LOSS BY EROSION FROM MECHANICALLY TILLED AND UNTILLED SOIL UNDER SUCCESSIVE SIMULATED RAINFALLS Rev. Bras. Ciênc. Solo
Bramorski,Julieta; Trivelin,Paulo Cesar Ocheuze; Crestana,Silvio.
The description of the fate of fertilizer-derived nitrogen (N) in agricultural systems is an essential tool to enhance management practices that maximize nutrient use by crops and minimize losses. Soil erosion causes loss of nutrients such as N, causing negative effects on surface and ground water quality, aside from losses in agricultural productivity by soil depletion. Studies correlating the percentage of fertilizer-derived N (FDN) with soil erosion rates and the factors involved in this process are scarce. The losses of soil and fertilizer-derived N by water erosion in soil under conventional tillage and no tillage under different rainfall intensities were quantified, identifying the intervening factors that increase loss. The experiment was carried...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 15N; Rainfall simulation; Water erosion.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000401204
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Perdas de solo, água e nutrientes pela erosão hídrica em diferentes sistemas de manejo agroflorestal no semi-árido cearense. Infoteca-e
CAMPANHA, M. M.; AGUIAR, M. I. de; MAIA, S. M. F.; OLIVEIRA, T. S. de; MENDONÇA, E. de S.; ARAUJO FILHO, J. A. de.
bitstream/CNPC-2010/21729/1/ct37.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Sistema agroflorestal; Sistema agrossilvipastoril; Código florestal; Código floretal; Agrosilvopastoral systems.; Agroforestry systems; Manejo do solo; Nutriente; Caatinga; Perda; Água; Erosão hídrica; Conservação; Recurso natural; Deterioração do solo; Losses from soil; Water erosion; Soil degradation; Semiarid soils..
Ano: 2008 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/534078
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Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios Ciência e Agrotecnologia
Bispo,Diêgo Faustolo Alves; Silva,Marx Leandro Naves; Marques,João José Granate de Sá e Melo; Bechmann,Marianne; Batista,Pedro Velloso Gomes; Curi,Nilton.
ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands...
Tipo: Info:eu-repo/semantics/article Palavras-chave: P index; Nutrient loss; Water erosion; Land use management; Environmental services..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565
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Reconsolidation of the soil surface after tillage discontinuity, with and without cultivation, related to erosion and its prediction with RUSLE Rev. Bras. Ciênc. Solo
Streck,E. V.; Cogo,N. P..
Site-specific regression coefficient values are essential for erosion prediction with empirical models. With the objective to investigate the surface-soilconsolidation factor, Cf, linked to the RUSLE's prior-land-use subfactor, PLU, an erosion experiment using simulated rainfall on a 0.075 m m-1 slope, sandy loam Paleudult soil, was conducted at the Agriculture Experimental Station of the Federal University of Rio Grande do Sul (EEA/UFRGS), in Eldorado do Sul, State of Rio Grande do Sul, Brazil. Firstly, a row-cropped area was excluded from cultivation (March 1995), the existing crop residue removed from the field, and the soil kept clean-tilled the rest of the year (to get a degraded soil condition for the intended purpose of this research). The soil was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water erosion; Simulated rainfall; Soil consolidation; RUSLE equation.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832003000100015
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Runoff and sediment transport in a degraded area Rev. Bras. Ciênc. Solo
Thomaz,Edivaldo Lopes.
Gully erosion occurs by the combined action of splash, sheetwash and rill-wash (interrill and rill erosion). These erosion processes have a great capacity for both sediment production and sediment transport. The objectives of this experiment were to evaluate hydrological and sediment transport in a degraded area, severely dissected by gullies; to assess the hydraulic flow characteristics and their aggregate transport capacity; and to measure the initial splash erosion rate. In the study area in Guarapuava, State of Paraná, Brazil (lat 25º 24' S; long 51º24' W; 1034 m asl), the soil was classified as Cambissolo Húmico alumínico, with the following particle-size composition: sand 0.116 kg kg-1; silt 0.180 kg kg-1; and clay 0.704 kg kg-1. The approach of this...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Field measurement; Water erosion; Simulated rain; Rainsplash; Runoff.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100025
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Rusle parameters for modeling the loss of a soil subjected to pig slurry application PAB
Santos,Maria Aparecida do Nascimento dos; Bertol,Ildegardis; Kaufmann,Danieli Schneiders; Mecabô Júnior,José; Bagio,Bárbara.
Abstract: The objective of this work was to determine adjustment parameters for the revised universal soil loss equation (Rusle) of a soil subjected to pig slurry application. Treatments consisted of 0, 50, 100, and 200 m3 ha-1 pig slurry (PS), after the cultivation of black oat (Avena strigosa), besides the application of 50 m3 ha-1 PS for six times onto the soil surface in a temporal sequence, and a control treatment of soil without cultivation and without pig slurry application. The evaluations were performed for black oat shoot dry mass, root mass and crop residues semi-incorporated into the soil (RMR), soil losses by means of simulated rain, and the parameters for water erosion modeling. The pig slurry application onto soil surface caused a reduction...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avena strigosa; Cultural residue factor; Mathematical model; Simulated rain; Soil consolidation factor; Water erosion.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001001167
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Sediment transport in runoff on rugous soil surface submitted to simulated rainfall Scientia Agricola
Bertol,Ildegardis; Zoldan Junior,Wilson Antonio; González,Antonio Paz; Barbosa,Fabrício Tondello; Werner,Romeu de Suza.
Soil management influences water erosion and sediment size in runoff. With the objective of quantifying sediments in runoff and their relation to runoff velocity (Rv), random roughness (RR), and Ir index, this experiment was carried out from 2003 to 2006, on a typical Hapludox with the following soil management systems submitted to chiseling: i) bare soil with plowing+two disking tillage (BSC); ii) plowing+two disking tillage (CTC); iii) no tillage with crop residues burned (BNTC); and iv) traditional notillage (TNTC). CTC, BNTC and TNTC treatments were cultivated with crop rotation and the BSC treatment was not cultivated. Five simulated rainfall tests were applied, with intensity of 64 mm h-1 and duration of 20, 30, 40, 50 and 60 min. RR was influenced...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water erosion; Chiseling; No-till; Sediment D50 index.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500013
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Soil and nutrient losses in erosion gullies at different degrees of restoration Rev. Bras. Ciênc. Solo
Machado,Roriz Luciano; Resende,Alexander Silva de; Campello,Eduardo Francia Carneiro; Oliveira,José Arimathéa; Franco,Avílio Antônio.
The most advanced stage of water erosion, the gully, represents severe problems in different contexts, both in rural and urban environments. In the search for a stabilization of the process in a viable manner it is of utmost importance to assess the efficiency of evaluation methodologies. For this purpose, the efficiency of low-cost conservation practices were tested for the reduction of soil and nutrient losses caused by erosion from gullies in Pinheiral, state of Rio de Janeiro. The following areas were studied: gully recovered by means of physical and biological strategies; gullies in recovering stage, by means of physical strategies only, and gullies under no restoration treatment. During the summer of 2005/2006, the following data sets were collected...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Valley of Mid-Paraíba do Sul River; Water erosion; Leguminous trees.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300036
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