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	Provedor de dados REA (2) PAB (1) Autor Marques Júnior,José (3) Siqueira,Diego S. (2) Camargo,Livia Arantes (1) Cortez,Lucas A. (1) Martins Filho,Marcílio V. (1) Matias,Sammy S. R. (1) Matias,Sammy Sidney Rocha (1) Peluco,Rafael G. (1) Pereira,Gener T. (1) Pereira,Gener Tadeu (1) Santos,Hélio L. (1) Siqueira,Diego Silva (1) Teixeira,Daniel De Bortoli (1) Mais... Palavra-chave Indirect quantification (3) Geostatistics (2) Compartments (1) Conservation planning (1) Detailed mapping (1) Landscape (1) Oxisol (1) Pedometrics (1) Pedotransfer (1) Relief (1) Scaled semivariogram (1) Spatial correlation (1) Topography (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2016 (1) 2013 (2) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Magnetic susceptibility in the prediction of soil attributes in two sugarcane harvesting management systems REA Peluco,Rafael G.; Marques Júnior,José; Siqueira,Diego S.; Cortez,Lucas A.; Pereira,Gener T.. This study aimed to investigate the potential use of magnetic susceptibility (MS) as pedotransfer function to predict soil attributes under two sugarcane harvesting management systems. For each area of 1 ha (one with green sugarcane mechanized harvesting and other one with burnt sugarcane manual harvesting), 126 soil samples were collected and subjected to laboratory analysis to determine soil physical, chemical and mineralogical attributes and for measuring of MS. Data were submitted to descriptive statistics by calculating the mean and coefficient of variation. In order to compare the means in the different harvesting management systems it was carried out the Tukey test at a significance level of 5%. In order to investigate the correlation of the MS with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pedotransfer; Indirect quantification; Oxisol. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600006 Erosion factors and magnetic susceptibility in differet compartments of a slope in Gilbués-PI, Brazil REA Santos,Hélio L.; Marques Júnior,José; Matias,Sammy S. R.; Siqueira,Diego S.; Martins Filho,Marcílio V.. The erosion is the degradation of soil with effects on crop productivity and pollution of the environment. To understand the spatial variability of this phenomenon, geostatistical techniques and concepts of soil-landscape can be used to identify landscape compartments with different potential of erosion. The aim of this study was to understand the factors of erosion in landscape compartments and the relations with the magnetic susceptibility (MS) of the soils in a slope in Gilbués, state of Piauí (PI), Brazil. Sampling meshes were set in compartments I and II with 121 points and in compartment III with 99 points spaced every 10 meters. There was significant difference to erodibility (K) and risk of erosion (RE); the spatial variability of MS was lower than... Tipo: Info:eu-repo/semantics/article Palavras-chave: Indirect quantification; Geostatistics; Conservation planning; Compartments; Topography; Relief; Landscape. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100008 Magnetic susceptibility for characterizing areas with different potentials for sugarcane production PAB Siqueira,Diego Silva; Marques Júnior,José; Teixeira,Daniel De Bortoli; Matias,Sammy Sidney Rocha; Camargo,Livia Arantes; Pereira,Gener Tadeu. Abstract The objective of this work was to evaluate the use of magnetic susceptibility for characterizing the spatial variability of soil attributes and identifying areas with different potentials for sugarcane (Saccharum spp.) production. Samples were collected at 110 points (1 per 7 ha) in the layers of 0.00-0.20 and 0.20-0.40 m, to determine the magnetic susceptibility and physical and chemical attributes of the soil. Fiber content, sucrose polarization (POL), and sugarcane yield were determined in 33 points. The spatial variability model for magnetic susceptibility was 63 and 22% more accurate in delimiting soil potential for sugarcane production than soil physical and chemical attributes at the 0.0-0.2 and 0.2-0.4-m layers, respectively. The spatial... Tipo: Info:eu-repo/semantics/article Palavras-chave: Detailed mapping; Geostatistics; Indirect quantification; Pedometrics; Scaled semivariogram; Spatial correlation. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901349 Registros recuperados: 3 Primeira ... 1 ... Última

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