Direct measurement and prediction of bulk density on alluvial soils of central Chile

The significance of soil bulk density (ρ) as a key indicator of soil quality was examined in this study. Bulk density values obtained by direct methods (clod, cylinder, and excavation) with three sample sizes (small, medium, and large) were compared with those obtained by 10 published pedot...

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Autores principales:	Casanova,Manuel, Tapia,Elizabeth, Seguel,Oscar, Salazar,Osvaldo
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2016
Materias:	Alluvial soils organic carbon pedotransfer function texture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000100015
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spelling	oai:scielo:S0718-583920160001000152018-10-01Direct measurement and prediction of bulk density on alluvial soils of central ChileCasanova,ManuelTapia,ElizabethSeguel,OscarSalazar,Osvaldo Alluvial soils organic carbon pedotransfer function texture The significance of soil bulk density (ρ) as a key indicator of soil quality was examined in this study. Bulk density values obtained by direct methods (clod, cylinder, and excavation) with three sample sizes (small, medium, and large) were compared with those obtained by 10 published pedotransfer functions (PTFs) for two alluvial soils (a massive fine-textured Fluventic Haploxeroll and an aggregated, coarse-textured Fluventic Haploxerept) of central Chile. With the exception of small cylinders in fine-textured soil, there were nonsignificant differences between the methods and sample sizes assessed. On the coarse-textured soil, there were nonsignificant differences between the excavation and clod methods, but medium-sized cylinders differed from other cylinder sizes. In general, the clod technique tended to give higher values than the other methods. Using basic information (texture and organic matter/C content) from the existing PTFs for both sites, a better fit for coarse-textured than fine-textured soils was obtained. This indicates that it is necessary to define a set of locally calibrated PTFs that address the complexity of the soil resource throughout Chile.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.76 n.1 20162016-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000100015en10.4067/S0718-58392016000100015
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Alluvial soils organic carbon pedotransfer function texture
spellingShingle	Alluvial soils organic carbon pedotransfer function texture Casanova,Manuel Tapia,Elizabeth Seguel,Oscar Salazar,Osvaldo Direct measurement and prediction of bulk density on alluvial soils of central Chile
description	The significance of soil bulk density (ρ) as a key indicator of soil quality was examined in this study. Bulk density values obtained by direct methods (clod, cylinder, and excavation) with three sample sizes (small, medium, and large) were compared with those obtained by 10 published pedotransfer functions (PTFs) for two alluvial soils (a massive fine-textured Fluventic Haploxeroll and an aggregated, coarse-textured Fluventic Haploxerept) of central Chile. With the exception of small cylinders in fine-textured soil, there were nonsignificant differences between the methods and sample sizes assessed. On the coarse-textured soil, there were nonsignificant differences between the excavation and clod methods, but medium-sized cylinders differed from other cylinder sizes. In general, the clod technique tended to give higher values than the other methods. Using basic information (texture and organic matter/C content) from the existing PTFs for both sites, a better fit for coarse-textured than fine-textured soils was obtained. This indicates that it is necessary to define a set of locally calibrated PTFs that address the complexity of the soil resource throughout Chile.
author	Casanova,Manuel Tapia,Elizabeth Seguel,Oscar Salazar,Osvaldo
author_facet	Casanova,Manuel Tapia,Elizabeth Seguel,Oscar Salazar,Osvaldo
author_sort	Casanova,Manuel
title	Direct measurement and prediction of bulk density on alluvial soils of central Chile
title_short	Direct measurement and prediction of bulk density on alluvial soils of central Chile
title_full	Direct measurement and prediction of bulk density on alluvial soils of central Chile
title_fullStr	Direct measurement and prediction of bulk density on alluvial soils of central Chile
title_full_unstemmed	Direct measurement and prediction of bulk density on alluvial soils of central Chile
title_sort	direct measurement and prediction of bulk density on alluvial soils of central chile
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000100015
work_keys_str_mv	AT casanovamanuel directmeasurementandpredictionofbulkdensityonalluvialsoilsofcentralchile AT tapiaelizabeth directmeasurementandpredictionofbulkdensityonalluvialsoilsofcentralchile AT segueloscar directmeasurementandpredictionofbulkdensityonalluvialsoilsofcentralchile AT salazarosvaldo directmeasurementandpredictionofbulkdensityonalluvialsoilsofcentralchile
_version_	1714205357119635456

Direct measurement and prediction of bulk density on alluvial soils of central Chile

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