<?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>2007-1132</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. forestales]]></abbrev-journal-title>
<issn>2007-1132</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11322022000400055</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v13i72.1279</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de tres sistemas de producción sobre el estado de la fertilidad física del suelo]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of three production systems on the physical fertility status of the soil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nuñez-Peñaloza]]></surname>
<given-names><![CDATA[Jorge Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cristóbal-Acevedo]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Acosta]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villanueva-Morales]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Chapingo División de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<volume>13</volume>
<numero>72</numero>
<fpage>55</fpage>
<lpage>81</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322022000400055&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322022000400055&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322022000400055&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La fertilidad física del suelo es importante y los sistemas de uso del suelo pueden modificarla. Los objetivos fueron determinar la influencia de la profundidad de muestreo (PM) y de los sistemas de uso del suelo (SUS) agrícola, forestal y pastizal sobre las propiedades físicas de un suelo tropical, y establecer si el tipo de muestreo (TM) incide en el cumplimiento de los supuestos de normalidad y homocedasticidad, así como en la significancia estadística de los efectos de los sistemas y las profundidades. Se realizó un muestreo de suelo simple (MS) y uno compuesto (MC) a las profundidades 0 a 10 cm y 10 a 20 cm. Se determinó la textura, densidad aparente, capacidad de campo, punto de marchitez permanente, humedad aprovechable, estabilidad de agregados, porosidad total y conductividad hidráulica saturada. Los SUS tuvieron efectos significativos sobre la capacidad de campo y punto de marchitez permanente con el MC, y estabilidad de agregados para los MS y MC. La única variable que presentó diferencias estadísticamente significativas para las PM fue la estabilidad de agregados en ambos tipos de muestreo; estos incidieron en la normalidad y homocedasticidad de datos para densidad aparente y la porosidad total. El MC mostró un no cumplimiento de la normalidad a diferencia del MS, también en la significancia de los efectos de los SUS y las PM, así como en su interacción. El pastizal presentó los valores más convenientes de las variables físicas desde el punto de vista agronómico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The physical fertility of the soil is important, and land use systems can modify it. The objectives of this study were to determine the influence of sampling depth (SD) and of the agricultural, forest and livestock land-use systems (LUS) on the physical properties of a tropical soil, and to establish whether the sampling type (ST) affects compliance with the assumptions of normality and homoscedasticity, as well as the statistical significance of the effects of systems and depth. A simple soil sampling (SS) and a composite soil sampling (CS) were performed at 0 to 10 cm and 10 to 20 cm deep. Texture, bulk density, field capacity, permanent wilting point, usable moisture, aggregate stability, total porosity and saturated hydraulic conductivity were determined. The LUS had significant effects on field capacity and on the permanent wilting point with CS, and on aggregate stability with SS and CS. The only variable that showed statistically significant differences for the various SD was aggregate stability, with both types of sampling; these impacted the normality and homoscedasticity of data for bulk density and total porosity. The CS exhibited non-compliance with normality, unlike the SS, it also influenced the significance of the effects of LUS and SD, as well as their interaction with each other. The pasture system exhibited the most convenient values for the physical variables from the agronomic point of view.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Agrícola]]></kwd>
<kwd lng="es"><![CDATA[fertilidad]]></kwd>
<kwd lng="es"><![CDATA[hule]]></kwd>
<kwd lng="es"><![CDATA[muestreo]]></kwd>
<kwd lng="es"><![CDATA[pastizal]]></kwd>
<kwd lng="es"><![CDATA[propiedades físicas]]></kwd>
<kwd lng="en"><![CDATA[Agricultural]]></kwd>
<kwd lng="en"><![CDATA[fertility]]></kwd>
<kwd lng="en"><![CDATA[rubber]]></kwd>
<kwd lng="en"><![CDATA[sampling]]></kwd>
<kwd lng="en"><![CDATA[pasture]]></kwd>
<kwd lng="en"><![CDATA[physical properties]]></kwd>
</kwd-group>
</article-meta>
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