Data/hora: 10/06/2024 17:57:36

Provedor de dados: 	Scientia Agricola	
País: 	Brazil	
Título: 	Alternative method for volumetric core removal in hardsetting soils	
Autores: 	Lima,Herdjania Veras de; Silva,Álvaro Pires da; Imhoff,Sílvia; Neves Junior,Afrânio Ferreira.	
Data: 	2005-10-01	
Ano: 	2005	
Palavras-chave: 	Soil sampler; Undisturbed samples; Soil bulk density.	
Resumo: 	Due to the narrow window of ideal moisture conditions required for collecting undisturbed soil samples from hardsetting horizons in the field, this study compared the efficiency of an alternative method of soil core removal in the laboratory with that of the traditional field method by using measurements of soil bulk density data (Db). In a first sampling, cylinders were removed with a soil sampler in the field. In a second sampling, large soil blocks were removed with Kubiena-type zinc (brass) boxes in the field. Volumetric core cylinder samples were removed from these blocks in the laboratory with a manual hydraulic pump. There were no differences between the Db values determined from the laboratory and the field coring method. The laboratory method was considered more efficient than the field method because it allowed reductions in the errors made by operators in the field, and those caused by differences in soil water content. The laboratory method allows sampling in hardsetting horizons throughout the year, and collecting soil core samples under conditions of controlled moisture and applied force.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500015	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/S0103-90162005000500015	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.62 n.5 2005	
Fonte: 	info:eu-repo/semantics/openAccess