Management units based on the physical properties of an Oxisol

In Colombia, the zone of the greatest agricultural expansion includes soils within the native savanna system. These soils are Oxisols, which have a stable structure but are susceptible to physical degradation. The objective of this paper was to study the spatial variability of the soil physical prop...

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Autores principales:	Camacho-Tamayo,J.H, Rubiano Sanabria,Y, Santana,L. M
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	Geostatistics multivariate analysis pedometrics spatial correlation soil management
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400001
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spelling	oai:scielo:S0718-951620130004000012014-01-29Management units based on the physical properties of an OxisolCamacho-Tamayo,J.HRubiano Sanabria,YSantana,L. M Geostatistics multivariate analysis pedometrics spatial correlation soil management In Colombia, the zone of the greatest agricultural expansion includes soils within the native savanna system. These soils are Oxisols, which have a stable structure but are susceptible to physical degradation. The objective of this paper was to study the spatial variability of the soil physical properties with the aim of determining management units. This study was carried out in the municipality of Puerto Gaitán, Meta, Colombia, in an area of 5100 ha where nodes were placed every 320 m in a grid. The samples were taken from the surface (A H) and subsurface (B H) horizons in which the texture, pore distribution, saturated hydraulic conductivity (K S), bulk density (B D) and soil particle density (P D) were determined. The data analysis was conducted using descriptive statistics, geostatistics and multivariate analysis. The predominant textures of the soil were loam and sandy loam. High values of B D, high values of microporosity, low presence of mesopores and slow K S were found, which result in physical limitations for adequate development of crops. The B D and the total porosity were the properties that best characterized the soil and showed the greatest number of significant correlations with the other physical properties. The K S was the only property that did not show spatial dependence. Geostatistics allowed the identification of spatial variability patterns, estimation of the properties at non-sampled sites, and identification of management units of the properties that fit the semivariogram models. Multivariate analysis identified the most representative properties of the soil and permitted the establishment of management units.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400001en10.4067/S0718-95162013005000061
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Geostatistics multivariate analysis pedometrics spatial correlation soil management
spellingShingle	Geostatistics multivariate analysis pedometrics spatial correlation soil management Camacho-Tamayo,J.H Rubiano Sanabria,Y Santana,L. M Management units based on the physical properties of an Oxisol
description	In Colombia, the zone of the greatest agricultural expansion includes soils within the native savanna system. These soils are Oxisols, which have a stable structure but are susceptible to physical degradation. The objective of this paper was to study the spatial variability of the soil physical properties with the aim of determining management units. This study was carried out in the municipality of Puerto Gaitán, Meta, Colombia, in an area of 5100 ha where nodes were placed every 320 m in a grid. The samples were taken from the surface (A H) and subsurface (B H) horizons in which the texture, pore distribution, saturated hydraulic conductivity (K S), bulk density (B D) and soil particle density (P D) were determined. The data analysis was conducted using descriptive statistics, geostatistics and multivariate analysis. The predominant textures of the soil were loam and sandy loam. High values of B D, high values of microporosity, low presence of mesopores and slow K S were found, which result in physical limitations for adequate development of crops. The B D and the total porosity were the properties that best characterized the soil and showed the greatest number of significant correlations with the other physical properties. The K S was the only property that did not show spatial dependence. Geostatistics allowed the identification of spatial variability patterns, estimation of the properties at non-sampled sites, and identification of management units of the properties that fit the semivariogram models. Multivariate analysis identified the most representative properties of the soil and permitted the establishment of management units.
author	Camacho-Tamayo,J.H Rubiano Sanabria,Y Santana,L. M
author_facet	Camacho-Tamayo,J.H Rubiano Sanabria,Y Santana,L. M
author_sort	Camacho-Tamayo,J.H
title	Management units based on the physical properties of an Oxisol
title_short	Management units based on the physical properties of an Oxisol
title_full	Management units based on the physical properties of an Oxisol
title_fullStr	Management units based on the physical properties of an Oxisol
title_full_unstemmed	Management units based on the physical properties of an Oxisol
title_sort	management units based on the physical properties of an oxisol
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400001
work_keys_str_mv	AT camachotamayojh managementunitsbasedonthephysicalpropertiesofanoxisol AT rubianosanabriay managementunitsbasedonthephysicalpropertiesofanoxisol AT santanalm managementunitsbasedonthephysicalpropertiesofanoxisol
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Management units based on the physical properties of an Oxisol

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