Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Ciência e Agrotecnologia (3) Autor Curi,Nilton (3) Silva,Elidiane da (3) Silva,Sérgio Henrique Godinho (3) Santos,Walbert Júnior Reis dos (2) Ferreira,Mozart Martins (1) Fonseca,Sebastião da (1) Marques,João José (1) Menezes,Michele Duarte de (1) Owens,Phillip Ray (1) Pelegrino,Marcelo Henrique Procópio (1) Volpato,Margarete Marin Lordelo (1) Mais... Palavra-chave Database (1) Decision trees (1) Field capacity (1) GIS (1) Geoprocessing (1) Pedofunction (1) Pedology (1) Permanent wilting point (1) Soil map (1) Tropical soils (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2016 (1) 2015 (1) 2014 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última PEDOTRANSFER FUNCTIONS FOR WATER RETENTION IN THE MAIN SOILS FROM THE BRAZILIAN COASTAL PLAINS Ciência e Agrotecnologia Silva,Elidiane da; Curi,Nilton; Ferreira,Mozart Martins; Volpato,Margarete Marin Lordelo; Santos,Walbert Júnior Reis dos; Silva,Sérgio Henrique Godinho. Pedotransfer functions (PTFs) are equations used to estimate soil characteristics difficult to determine from other easily obtained ones. Water retention in soil is used in several agronomic and environmental applications, but its direct determination is time consuming and onerous, therefore PTFs are alternatives to obtaining this information more quickly and economically. The aims of this study were to generate a database and develop PTFs for water retention at potentials of -33 kPa (field capacity) and -1500 kPa (permanent wilting point) for Yellow Argisol and Yellow Latosol from the Brazilian Coastal Plains region. The Coastal Plains soils are mostly developed from Barreiras formation (pre-weathered sediments) and their main uses are sugarcane,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Database; Pedofunction; Permanent wilting point; Field capacity. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000400331 Detailed soil survey of an experimental watershed representative of the Brazilian Coastal Plains and its practical application Ciência e Agrotecnologia Santos,Walbert Júnior Reis dos; Curi,Nilton; Silva,Sérgio Henrique Godinho; Fonseca,Sebastião da; Silva,Elidiane da; Marques,João José. This paper presents a detailed soil survey of an experimental watershed with representative pedoclimatic characteristics of the Coastal Plains in Espírito Santo State and its practical applications. For the pedological survey, 35 observation sites and three soil profiles were sampled and described, which were morphologically characterized and subjected to physical (particle size) and chemical analyses (routine and sulfuric acid digestion). The soil map was made using the geographic information system ArcGIS 9.3. This GIS software was also used to generate the digital elevation model (DEM) for identifying the slope classes. SAGA software was used to calculate the topographic wetness index (WI) which aided in a more accurate separation of Haplic Organosol... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil map; Geoprocessing; GIS. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100006 Mapping soils in two watersheds using legacy data and extrapolation for similar surrounding areas Ciência e Agrotecnologia Pelegrino,Marcelo Henrique Procópio; Silva,Sérgio Henrique Godinho; Menezes,Michele Duarte de; Silva,Elidiane da; Owens,Phillip Ray; Curi,Nilton. ABSTRACT Existing soil maps (legacy data) associated with digital mapping techniques are alternatives to obtain information at lower costs, however, tests are required to do it more efficiently. This study had as objectives to compare different methods to extract information from detailed scale soil maps using decision trees for mapping soil classes at two watersheds in Minas Gerais, validate these maps in the field and use the best method to extrapolate information to larger areas, also validating these maps of larger areas. Detailed soil maps of Vista Bela creek (VBW) and Marcela creek (MCW) watersheds were used as source of information. Seven methods to extract information from maps were compared: the whole polygon, eliminating 20 and 40 m from the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Decision trees; Pedology; Tropical soils. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000500534 Registros recuperados: 3 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco