Alternative method for measuring soil particle density - exactness, precision, and processing time

Gubiani, P.I.; Reinert, D.J.; Reichert, J.M.

Ciencia Rural 36(2): 664-668

2006


ISSN/ISBN: 0103-8478
DOI: 10.1590/s0103-84782006000200049
Accession: 004395854

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Abstract
Soil particle density (Dp) has been mainly determined using methods which measure the volume of solids by liquid displacement and its volumetric quantification. The volumetric measurement shows low precision, requires time for complete liquid drainage and is the longer lasting step. An alternative method of measuring soil particle density is presented by weighing the volume displaced instead of measuring the volume of the solid. The particle density of 60 soil samples varying in texture and organic matter was determined by the volumetric flask and modified volumetric flask method, estimating exactness, precision and processing time. The average particle density for both methods was similar, with the modified flask method presenting greater precision and smaller processing time.