Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics

The objective of this study was to predict the concentration of soil organic matter (SOM) in tropical soils using near-infrared spectroscopy (NIRS) for samples measured within a polyethylene bag and without a bag. One hundred and fifty six soil samples from the humid tropics of Tabasco, Mexico with...

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Autores principales:	Jarquín-Sánchez,Aarón, Salgado-García,Sergio, Palma-López,David J, Camacho-Chiu,Wilder
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2012
Materias:	Chemical analysis tropical soil optical fiber model organic matter prediction
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200015
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spelling	oai:scielo:S0718-162020120002000152012-10-24Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometricsJarquín-Sánchez,AarónSalgado-García,SergioPalma-López,David JCamacho-Chiu,Wilder Chemical analysis tropical soil optical fiber model organic matter prediction The objective of this study was to predict the concentration of soil organic matter (SOM) in tropical soils using near-infrared spectroscopy (NIRS) for samples measured within a polyethylene bag and without a bag. One hundred and fifty six soil samples from the humid tropics of Tabasco, Mexico with contrasting chemical characteristics were selected. The samples were dried, ground, and sieved through 2 mm and 5 mm screens, and their SOM contents were determined using the Walkley-Black method. The soil samples were packed in polyethylene bags, and SOM was measured directly with and without a bag using a quartz probe (FOSS 5000 model of NIRsystems, DK-3400 Hillerod,Denmark) for a range from 1100 to 2000 nm to obtain a prediction model of SOM. The model for determining SOM for bagged samples had good fit and explained 88% of the variation (0 to 10, 2% of SOM of samples). The model for determining SOM for bag-less samples was not efficient for predicting independent samples and therefore was discarded. The analysis by NIRS was reliable, more rapid, and easier for the determination of SOM in soil samples measured through a plastic bag.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.39 n.2 20122012-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200015en10.4067/S0718-16202012000200015
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chemical analysis tropical soil optical fiber model organic matter prediction
spellingShingle	Chemical analysis tropical soil optical fiber model organic matter prediction Jarquín-Sánchez,Aarón Salgado-García,Sergio Palma-López,David J Camacho-Chiu,Wilder Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics
description	The objective of this study was to predict the concentration of soil organic matter (SOM) in tropical soils using near-infrared spectroscopy (NIRS) for samples measured within a polyethylene bag and without a bag. One hundred and fifty six soil samples from the humid tropics of Tabasco, Mexico with contrasting chemical characteristics were selected. The samples were dried, ground, and sieved through 2 mm and 5 mm screens, and their SOM contents were determined using the Walkley-Black method. The soil samples were packed in polyethylene bags, and SOM was measured directly with and without a bag using a quartz probe (FOSS 5000 model of NIRsystems, DK-3400 Hillerod,Denmark) for a range from 1100 to 2000 nm to obtain a prediction model of SOM. The model for determining SOM for bagged samples had good fit and explained 88% of the variation (0 to 10, 2% of SOM of samples). The model for determining SOM for bag-less samples was not efficient for predicting independent samples and therefore was discarded. The analysis by NIRS was reliable, more rapid, and easier for the determination of SOM in soil samples measured through a plastic bag.
author	Jarquín-Sánchez,Aarón Salgado-García,Sergio Palma-López,David J Camacho-Chiu,Wilder
author_facet	Jarquín-Sánchez,Aarón Salgado-García,Sergio Palma-López,David J Camacho-Chiu,Wilder
author_sort	Jarquín-Sánchez,Aarón
title	Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics
title_short	Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics
title_full	Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics
title_fullStr	Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics
title_full_unstemmed	Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics
title_sort	analysis of soil organic matter in tropical soils with near-infrared spectroscopy (nirs) and chemometrics
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200015
work_keys_str_mv	AT jarquinsanchezaaron analysisofsoilorganicmatterintropicalsoilswithnearinfraredspectroscopynirsandchemometrics AT salgadogarciasergio analysisofsoilorganicmatterintropicalsoilswithnearinfraredspectroscopynirsandchemometrics AT palmalopezdavidj analysisofsoilorganicmatterintropicalsoilswithnearinfraredspectroscopynirsandchemometrics AT camachochiuwilder analysisofsoilorganicmatterintropicalsoilswithnearinfraredspectroscopynirsandchemometrics
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Analysis of soil organic matter in tropical soils with near-infrared spectroscopy (NIRS) and chemometrics

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