Soil texture analyses using a hydrometer: modification of the Bouyoucos method

A.N. Beretta, A.V. Silbermann, L. Paladino, D. Torres, D. Bassahun, R. Musselli, and A. García-Lamohte. 2014. Soil texture analyses by hydrometer: modifications of the Bouyoucos method. Cien. Inv. Agr. 41(2): 263-271. The Robinson pipette method (Pipette) is accurate and precise but time consuming....

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Autores principales:	Beretta,Andrés N, Silbermann,Ana V, Paladino,Leonardo, Torres,Deborah, Bassahun,Daniel, Musselli,Raquel, García-Lamohte,Adriana
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2014
Materias:	particle sedimentation particle size distribution Pipette method
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200013
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spelling	oai:scielo:S0718-162020140002000132014-09-24Soil texture analyses using a hydrometer: modification of the Bouyoucos methodBeretta,Andrés NSilbermann,Ana VPaladino,LeonardoTorres,DeborahBassahun,DanielMusselli,RaquelGarcía-Lamohte,Adriana particle sedimentation particle size distribution Pipette method A.N. Beretta, A.V. Silbermann, L. Paladino, D. Torres, D. Bassahun, R. Musselli, and A. García-Lamohte. 2014. Soil texture analyses by hydrometer: modifications of the Bouyoucos method. Cien. Inv. Agr. 41(2): 263-271. The Robinson pipette method (Pipette) is accurate and precise but time consuming. Bouyoucos (1936) proposed a more rapid and simpler procedure called the hydrometer method. Both analytical techniques are sedimentation procedures accepted as standard techniques for particle-size analysis. The sand, silt, and clay contents of several soil samples were determined using the Pipette method as a control and compared with the Bouyoucus, the Bouyoucos Modified (Bouyoucos_M) and the Bouyoucos Modified with gravimetric determination of the sand content (Bouyoucos_M-T) methods. Data obtained from these procedures was used to assess soil textural class, the soil erodibility coefficient (K), the water retained at field capacity (FC) and the permanent wilting point (PWP). In the Bouyoucos_M method, the soil organic matter (SOM) was destroyed and the dispersingagent concentration was increased. In the Bouyoucos_M-T method, the sand was quantified gravimetrically by sieving samples through a 53 µm mesh. The hydrometer and Pipette methods measurements correlated well. The Bouyoucos and the Bouyoucus-M methods overestimated the sand content. The performance of the Bouyoucos_M-T method did not differ from that of the Pipette method. Compared with the Pipette method, the Bouyoucus method underestimated the clay content, and the Bouyoucos_M method did not differ from the Pipette method. The values obtained with the Bouyoucos_M and the Bouyoucos methods underestimated the FC and the PWP, and Bouyoucos_M-T method did not differ from estimations based on the Pipette method data. The assessed K value was underestimated with the Bouyoucos_M method. The Bouyoucos and the Bouyoucos_M-T methods estimated the K values similar to the Pipette method. The Bouyucus_M-T method is suitable for determining the soil texture and inferring soil properties but is unacceptable for assessing the class texture for soil taxonomic classification.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.41 n.2 20142014-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200013en10.4067/S0718-16202014000200013
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	particle sedimentation particle size distribution Pipette method
spellingShingle	particle sedimentation particle size distribution Pipette method Beretta,Andrés N Silbermann,Ana V Paladino,Leonardo Torres,Deborah Bassahun,Daniel Musselli,Raquel García-Lamohte,Adriana Soil texture analyses using a hydrometer: modification of the Bouyoucos method
description	A.N. Beretta, A.V. Silbermann, L. Paladino, D. Torres, D. Bassahun, R. Musselli, and A. García-Lamohte. 2014. Soil texture analyses by hydrometer: modifications of the Bouyoucos method. Cien. Inv. Agr. 41(2): 263-271. The Robinson pipette method (Pipette) is accurate and precise but time consuming. Bouyoucos (1936) proposed a more rapid and simpler procedure called the hydrometer method. Both analytical techniques are sedimentation procedures accepted as standard techniques for particle-size analysis. The sand, silt, and clay contents of several soil samples were determined using the Pipette method as a control and compared with the Bouyoucus, the Bouyoucos Modified (Bouyoucos_M) and the Bouyoucos Modified with gravimetric determination of the sand content (Bouyoucos_M-T) methods. Data obtained from these procedures was used to assess soil textural class, the soil erodibility coefficient (K), the water retained at field capacity (FC) and the permanent wilting point (PWP). In the Bouyoucos_M method, the soil organic matter (SOM) was destroyed and the dispersingagent concentration was increased. In the Bouyoucos_M-T method, the sand was quantified gravimetrically by sieving samples through a 53 µm mesh. The hydrometer and Pipette methods measurements correlated well. The Bouyoucos and the Bouyoucus-M methods overestimated the sand content. The performance of the Bouyoucos_M-T method did not differ from that of the Pipette method. Compared with the Pipette method, the Bouyoucus method underestimated the clay content, and the Bouyoucos_M method did not differ from the Pipette method. The values obtained with the Bouyoucos_M and the Bouyoucos methods underestimated the FC and the PWP, and Bouyoucos_M-T method did not differ from estimations based on the Pipette method data. The assessed K value was underestimated with the Bouyoucos_M method. The Bouyoucos and the Bouyoucos_M-T methods estimated the K values similar to the Pipette method. The Bouyucus_M-T method is suitable for determining the soil texture and inferring soil properties but is unacceptable for assessing the class texture for soil taxonomic classification.
author	Beretta,Andrés N Silbermann,Ana V Paladino,Leonardo Torres,Deborah Bassahun,Daniel Musselli,Raquel García-Lamohte,Adriana
author_facet	Beretta,Andrés N Silbermann,Ana V Paladino,Leonardo Torres,Deborah Bassahun,Daniel Musselli,Raquel García-Lamohte,Adriana
author_sort	Beretta,Andrés N
title	Soil texture analyses using a hydrometer: modification of the Bouyoucos method
title_short	Soil texture analyses using a hydrometer: modification of the Bouyoucos method
title_full	Soil texture analyses using a hydrometer: modification of the Bouyoucos method
title_fullStr	Soil texture analyses using a hydrometer: modification of the Bouyoucos method
title_full_unstemmed	Soil texture analyses using a hydrometer: modification of the Bouyoucos method
title_sort	soil texture analyses using a hydrometer: modification of the bouyoucos method
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200013
work_keys_str_mv	AT berettaandresn soiltextureanalysesusingahydrometermodificationofthebouyoucosmethod AT silbermannanav soiltextureanalysesusingahydrometermodificationofthebouyoucosmethod AT paladinoleonardo soiltextureanalysesusingahydrometermodificationofthebouyoucosmethod AT torresdeborah soiltextureanalysesusingahydrometermodificationofthebouyoucosmethod AT bassahundaniel soiltextureanalysesusingahydrometermodificationofthebouyoucosmethod AT musselliraquel soiltextureanalysesusingahydrometermodificationofthebouyoucosmethod AT garcialamohteadriana soiltextureanalysesusingahydrometermodificationofthebouyoucosmethod
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Soil texture analyses using a hydrometer: modification of the Bouyoucos method

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