<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-0135</journal-id>
<journal-title><![CDATA[Revista de Ciencias Agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Cienc. Agr.]]></abbrev-journal-title>
<issn>0120-0135</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Nariño]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-01352021000100134</article-id>
<article-id pub-id-type="doi">10.22267/rcia.213801.149</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Hydropedological behavior of a chromic vertisol under different plant covers]]></article-title>
<article-title xml:lang="es"><![CDATA[Comportamiento hidropedológico de un vertisol crómico bajo diferentes coberturas vegetales]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villazón-Gómez]]></surname>
<given-names><![CDATA[Juan-Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Holguín  ]]></institution>
<addr-line><![CDATA[Holguin ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>38</volume>
<numero>1</numero>
<fpage>134</fpage>
<lpage>143</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-01352021000100134&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-01352021000100134&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-01352021000100134&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Vertisols present edaphic limiting factors primarily of a physical nature. The study of their hydropedology, supported by multivariate techniques, is of vital importance. The work was developed with the objective of determining, through multivariate analysis, the hydropedological behavior of a Chromic Vertisol under different plant covers. In areas under natural grass, sugarcane, and secondary forest, belonging to the Holguín Sugarcane Provincial Research Station, three random points were chosen in each. Soil penetration resistance, soil bulk density, gravimetric moisture, and volumetric moisture at depths of 0-10, 10-20 and 20-30cm were determined. A Principal Component Analysis and Canonical Correlations were performed using Statistica 7 and Statgraphics Plus XV.II. The first two components made the greatest contribution to the variance, with 83.09%. The greatest contributions (1st component) were given by moisture at all depths and by soil compaction at a depth of 20-30cm. The 2nd component was influenced by soil compaction in the 0-10 and 10-20cm layers. There was a contrast between the variables that characterize the solid phase with which they describe the liquid phase of the soil. There was a correlation between soil moisture and compaction. The first two pairs of canonical variables showed a strong linear correlation and regularly dispersed along the central values of the model, with a remarkable grouping by depths.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los Vertisoles presentan factores edáficos limitantes fundamentalmente de carácter físico. El estudio de su hidropedología, apoyado en técnicas multivariadas, es de vital importancia. El trabajo se desarrolló con el objetivo de determinar, mediante análisis multivariado, el comportamiento hidropedológico de un Vertisol Crómico bajo diferentes usos de la tierra. En áreas bajo pasto natural, caña de azúcar y bosque secundario, pertenecientes a la Estación Provincial de Investigaciones de la Caña de Azúcar de Holguín, se escogieron tres puntos al azar en cada una. Se determinó la resistencia a la penetración, la densidad aparente, la humedad gravimétrica y la humedad volumétrica a las profundidades de 0-10, 10-20 y 20-30 cm. Se realizó un Análisis de Componentes Principales y de Correlaciones Canónicas, con los softwares Statistica 7 y Statgraphics Plus XV.II. Se encontró que las dos primeras componentes realizaron la mayor contribución a la varianza, con un 83.09%. Los mayores aportes (1ra componente) estuvieron dados por la humedad en todas las profundidades y por la compactación del suelo en la profundidad de 20-30 cm. La 2da componente estuvo influenciada por la compactación del suelo en las capas de 0-10 y de 10-20 cm. Existió contraposición entre las variables que caracterizan la fase sólida con las que describen la fase líquida del suelo. Existió correlación entre la humedad del suelo y la compactación. Los dos primeros pares de variables canónicas mostraron una fuerte correlación lineal y dispersada regularmente a lo largo de los valores centrales del modelo, con un notable agrupamiento por profundidades.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Principal component analysis]]></kwd>
<kwd lng="en"><![CDATA[canonical correlations]]></kwd>
<kwd lng="en"><![CDATA[soil bulk density]]></kwd>
<kwd lng="en"><![CDATA[soil compaction]]></kwd>
<kwd lng="en"><![CDATA[soil moisture]]></kwd>
<kwd lng="en"><![CDATA[soil penetration resistance.]]></kwd>
<kwd lng="es"><![CDATA[Análisis de Componentes Principales]]></kwd>
<kwd lng="es"><![CDATA[Correlaciones canónicas]]></kwd>
<kwd lng="es"><![CDATA[Densidad aparente]]></kwd>
<kwd lng="es"><![CDATA[compactación de suelos]]></kwd>
<kwd lng="es"><![CDATA[Resistencia a la penetración]]></kwd>
<kwd lng="es"><![CDATA[humedad del suelo.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Badii]]></surname>
<given-names><![CDATA[M.-H.]]></given-names>
</name>
<name>
<surname><![CDATA[Castillo]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Cortez]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Wong]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Villalpando]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Análisis de correlación canónica (ACC) e investigación científica]]></article-title>
<source><![CDATA[InnOvaciOnes de NegOciOs]]></source>
<year>2007</year>
<volume>4</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>405-22</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Batey]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil compaction and soil management- a review]]></article-title>
<source><![CDATA[Soil Use and Management]]></source>
<year>2009</year>
<volume>25</volume>
<page-range>335-45</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cid-Lazo]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera-Puebla]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sierra]]></surname>
<given-names><![CDATA[L.-O.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Seijas]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Metodología para el manejo hidropedológico de los suelos con arcillas dilatables en Cuba. Parte I: Parámetros fundamentales para la caracterización física de los suelos]]></article-title>
<source><![CDATA[Revista Ciencias Técnicas Agropecuarias]]></source>
<year>2004</year>
<volume>13</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>7-12</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cid-Lazo]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera-Puebla]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Seijas]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[González-Robaina]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Resultados de algunas investigaciones en suelos Vérticos de Cuba]]></article-title>
<source><![CDATA[Ingeniería Agrícola]]></source>
<year>2016</year>
<volume>6</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>51-6</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cid-Lazo]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Herrera-Puebla]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sierra]]></surname>
<given-names><![CDATA[L.-O.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Seijas]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Gestión del agua en el manejo integral de los Vertisuelos bajo diferentes agroecosistemas]]></article-title>
<source><![CDATA[Revista Ciencias Técnicas Agropecuarias]]></source>
<year>2004</year>
<volume>13</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>1-5</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cid-Lazo]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Seijas]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[González-Robaina]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Parámetros fundamentales para la caracterización hidropedológica general de los suelos]]></article-title>
<source><![CDATA[Revista Ciencias Técnicas Agropecuarias.]]></source>
<year>2006</year>
<volume>15</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>42-7</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Whalley]]></surname>
<given-names><![CDATA[W. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Tian]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ren]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A simple model to predict soil penetrometer resistance as a function of density, drying and depth in the field]]></article-title>
<source><![CDATA[Soil &amp; Tillage Research]]></source>
<year>2016</year>
<volume>155</volume>
<page-range>190-8</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gutiérrez-Rodríguez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Vaca-García]]></surname>
<given-names><![CDATA[V.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-López]]></surname>
<given-names><![CDATA[D.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Franco-Mora]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Rubí-Arriaga]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Castañeda-Vildózola]]></surname>
<given-names><![CDATA[Á.]]></given-names>
</name>
<name>
<surname><![CDATA[Morales-Rosales]]></surname>
<given-names><![CDATA[E.-J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Compactación mecánica en suelos Vertisoles]]></article-title>
<source><![CDATA[Ciencias Agrícolas Informa]]></source>
<year>2014</year>
<volume>23</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>7-21</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hamza]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Anderson]]></surname>
<given-names><![CDATA[W.K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Soil compaction in cropping system. A review of the nature, causes and posible solutions]]></article-title>
<source><![CDATA[Soil &amp; Tillage Research]]></source>
<year>2005</year>
<volume>82</volume>
<page-range>121-45</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hernández-Jiménez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Llanes-Hernández]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Pérez]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez-Cabello]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Características de Vertisoles en áreas periféricas de La Habana]]></article-title>
<source><![CDATA[Cultivos Tropicales]]></source>
<year>2014</year>
<volume>35</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>68-74</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hernández-Jiménez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Jiménez]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bosch-Infante]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Castro-Speck]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Clasificación de los suelos de Cuba]]></source>
<year>2015</year>
<page-range>91</page-range><publisher-loc><![CDATA[San José de Las Lajas ]]></publisher-loc>
<publisher-name><![CDATA[INCA Ediciones]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<collab>IUSS Working Group WRB</collab>
<source><![CDATA[Base referencial mundial del recurso suelo 2014, Actualización 2015. Sistema internacional de clasificación de suelos para la nomenclatura de suelos y la creación de leyendas de mapas de suelos. Informes sobre recursos mundiales de suelos 106]]></source>
<year>2015</year>
<page-range>205</page-range><publisher-loc><![CDATA[Roma ]]></publisher-loc>
<publisher-name><![CDATA[FAO.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jorbenadze]]></surname>
<given-names><![CDATA[L.T.]]></given-names>
</name>
<name>
<surname><![CDATA[Urushadze]]></surname>
<given-names><![CDATA[T.F.]]></given-names>
</name>
<name>
<surname><![CDATA[Urushadze]]></surname>
<given-names><![CDATA[T.T.]]></given-names>
</name>
<name>
<surname><![CDATA[Kunchulia]]></surname>
<given-names><![CDATA[I.O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Physical properties of the soils of Georgia]]></article-title>
<source><![CDATA[Annals of Agrarian Science]]></source>
<year>2017</year>
<volume>15</volume>
<page-range>224-34</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Krüger]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Frolla]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Zilio]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Un indicador de compactación relacionado con el agua del suelo]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Quiroga]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Álvarez]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[(Comps.). Análisis y evaluación de las propiedades físico hídricas de los suelos.]]></source>
<year>2018</year>
<page-range>45-9</page-range><publisher-loc><![CDATA[INTA Ediciones. Anguil, La Pampa ]]></publisher-loc>
<publisher-name><![CDATA[Argentina.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lin]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Bouma]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Pachepsky]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Western]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Thompson]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Van Genuchten]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Vogel]]></surname>
<given-names><![CDATA[H.-J.]]></given-names>
</name>
<name>
<surname><![CDATA[Lilly]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hydropedology: synergistic integration of pedology and hydrology]]></article-title>
<source><![CDATA[Water Resources Research]]></source>
<year>2006</year>
<volume>42</volume>
<page-range>W05301</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Millán]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Feria]]></surname>
<given-names><![CDATA[M.E.]]></given-names>
</name>
<name>
<surname><![CDATA[Díaz]]></surname>
<given-names><![CDATA[F.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Millán]]></surname>
<given-names><![CDATA[C.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Incorporación de biomasa en un suelo Vertisol y su relación con la densidad de compactación]]></article-title>
<source><![CDATA[Temas Agrarios]]></source>
<year>2013</year>
<volume>18</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>57-65</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mota]]></surname>
<given-names><![CDATA[J.C.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Alves]]></surname>
<given-names><![CDATA[C.V.O.]]></given-names>
</name>
<name>
<surname><![CDATA[Freire]]></surname>
<given-names><![CDATA[A.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Assis]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Uni and multivariate analyses of soil physical quality indicators of a Cambisol from Apodi Plateau-CE, Brazil]]></article-title>
<source><![CDATA[Soil &amp; Tillage Research]]></source>
<year>2014</year>
<volume>140</volume>
<page-range>66-73</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peel]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Finlayson]]></surname>
<given-names><![CDATA[B.L.]]></given-names>
</name>
<name>
<surname><![CDATA[McMahon]]></surname>
<given-names><![CDATA[T.A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Updated world map of the Köppen-Geiger climate classification]]></article-title>
<source><![CDATA[Hydrology and Earth System Sciences]]></source>
<year>2007</year>
<volume>11</volume>
<page-range>1633-44</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="book">
<collab>Soil Survey Staff</collab>
<source><![CDATA[Key to Soil Taxonomy]]></source>
<year>2010</year>
<edition>11</edition>
<page-range>346</page-range><publisher-loc><![CDATA[Washington, D.C. ]]></publisher-loc>
<publisher-name><![CDATA[United States Department of Agriculture &amp; Natural Resources Conservation Service.]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stolf]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Teoria e teste experimental de fórmulas de transformação dos dados de penetrômetro de impacto emresistência do solo]]></article-title>
<source><![CDATA[Revista Brasileira de Ciência do Solo]]></source>
<year>1991</year>
<volume>15</volume>
<page-range>229-35</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres-Guerrero]]></surname>
<given-names><![CDATA[C.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Gutiérrez-Castorena]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz-Solorio]]></surname>
<given-names><![CDATA[C.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Gutiérrez-Castorena]]></surname>
<given-names><![CDATA[E.V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Manejo agronómico de los Vertisoles en México: una revisión]]></article-title>
<source><![CDATA[Terra Latinoamericana]]></source>
<year>2016</year>
<volume>34</volume>
<page-range>457-66</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[Q.Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Luo]]></surname>
<given-names><![CDATA[W.Q.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[Z.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[W.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Yuan]]></surname>
<given-names><![CDATA[D.X.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Improve the prediction of soil bulk density by cokriging with predicted soil water content as auxiliary variable]]></article-title>
<source><![CDATA[Journal of Soil Sediment]]></source>
<year>2016</year>
<volume>16</volume>
<page-range>77-84</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
