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	Provedor de dados REA (2) Rev. Ciênc. Agron. (1) Autor Leão,Marisol G. A. de (1) Marques Júnior,José (1) Pereira,Gener T. (1) Pinto,Francisco de A. de C. (1) Pinto,Francisco de Assis de Carvalho (1) Queiroz,Daniel M. de (1) Queiroz,Daniel Marçal de (1) Santos,Fábio L. (1) Santos,Fábio Lúcio (1) Santos,Nerilson T. (1) Santos,Nerilson Terra (1) Siqueira,Diego S. (1) Souza,Zigomar M. de (1) Valente,Domingos S. M. (1) Valente,Domingos Sárvio Magalhães (1) Mais... Palavra-chave Management zone (3) Sensors (2) Geostatistical (1) Geostatistics (1) Orange (1) Oxisol (1) Precision agriculture (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Info:eu-repo/semantics/other (1) Ano 2014 (1) 2012 (1) 2011 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Terrain forms and spatial variability of soil properties in an area cultivatedwith citrus REA Leão,Marisol G. A. de; Marques Júnior,José; Souza,Zigomar M. de; Siqueira,Diego S.; Pereira,Gener T.. The technique of precision agriculture and soil-landscape allows delimiting areas for localized management, allowing a localized application of agricultural inputs and thereby may contribute to preservation of natural resources. Therefore, the objective of this work was to characterize the spatial variability of chemical properties and clay content in the context of soil-landscape relationship in a Latosol (Oxisol) under cultivation of citrus. Soil samples were collected at a depth of 0.0-0.2 m in an area of 83.5 ha planted with citrus, as a 50-m intervals grid, with 129 points in concave terrain and 206 points in flat terrain, totaling 335 points. Values for the variables that express the chemical characteristics and clay content of soil properties were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Geostatistics; Management zone; Oxisol; Orange. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000400003 Spatial variability of apparent electrical conductivity and soil properties in a coffee production field REA Valente,Domingos S. M.; Queiroz,Daniel M. de; Pinto,Francisco de A. de C.; Santos,Fábio L.; Santos,Nerilson T.. Precision agriculture based on the physical and chemical properties of soil requires dense sampling to determine the spatial variability of these properties. This dense sampling is often expensive and time-consuming. One technique used to reduce sample numbers involves defining management zones based on information collected in the field. Some researchers have demonstrated the importance of soil electrical variables in defining management zones. The objective of this study was to evaluate the relationship between the spatial variability of the apparent electrical conductivity and the soil properties in the coffee production of mountain regions. Spatial variability maps were generated using a geostatistical method. Based on the spatial variability results,... Tipo: Info:eu-repo/semantics/other Palavras-chave: Geostatistical; Management zone; Sensors. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600017 The relationship between apparent soil electrical conductivity and soil properties Rev. Ciênc. Agron. Valente,Domingos Sárvio Magalhães; Queiroz,Daniel Marçal de; Pinto,Francisco de Assis de Carvalho; Santos,Nerilson Terra; Santos,Fábio Lúcio. Precision agriculture that is based on the physical and chemical properties of soil requires a dense sampling to evaluate spatial variability in the field. This dense sampling is often expensive and time consuming. One technique to reduce the number of samples is to define management zones based on information that is collected in the field. Some researchers have demonstrated the importance of the electrical properties of soil in defining management zones. Thus, the objective of this study was to evaluate the relationship between the apparent soil electrical conductivity and soil properties in mountainous areas of coffee production. The electrical conductivity of soil was evaluated at soil depths ranging from 0.00-0.20 m (EC20) and 0.00-0.40 m (EC40) using... Tipo: Info:eu-repo/semantics/article Palavras-chave: Precision agriculture; Management zone; Sensors. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000400009 Registros recuperados: 3 Primeira ... 1 ... Última

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