<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662019000100136</article-id>
<article-id pub-id-type="doi">10.15174/au.2019.1968</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Desempeño de un subsolador integral biomimético para laboreo sustentable de suelos agrícolas]]></article-title>
<article-title xml:lang="en"><![CDATA[Performance of a biomimetic integral subsoiler for sustainable tillage of agricultural soils]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osuna-Ceja]]></surname>
<given-names><![CDATA[Esteban Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garibaldi Márquez]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Hernández]]></surname>
<given-names><![CDATA[Raúl Vidal]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Campo Experimental Pabellón ]]></institution>
<addr-line><![CDATA[Pabellón de Arteaga Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>29</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662019000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662019000100136&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662019000100136&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este estudio fue evaluar el desempeño de un subsolador integral biomimético (SIB) para el laboreo sustentable del suelo, comparado con un multiarado (M), un equipo subsolador (S) y el sistema convencional de arado (AD) y rastra de discos (Ra). El trabajo se estableció en un suelo franco arenoso, en franjas de 15 m de ancho por 110 m de longitud, sin repeticiones. Se encontró que SIB y M tienen mayor anchura de trabajo, demandan más fuerza de tiro y menor consumo de combustible por hectárea (ha), por lo que estadísticamente son diferentes a AD y S. La velocidad de trabajo de SIB repercute directamente en su rendimiento operativo (ha h-1), ya que es 33.8% mayor al rendimiento de AD. En calidad y operación de los implementos, estos no produjeron cambios temporales sobre la densidad aparente (Da), diámetro medio de los agregados (DG50), resistencia a la penetración (Rp) y humedad gravimétrica (&#415;g); estadísticamente no mostraron diferencias (p &#8804; 0.05), aunque en promedio Da en M fue mayor que en AD, S y SIB para todas las profundidades de muestreo. Por tanto, se concluye que SIB representa una alternativa sustentable para la preparación primaria del suelo y puede utilizarse en lugar de la labranza convencional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The goal of this study was to evaluate the performance of a biomimetic integral subsoiler (SIB) for the sustainable tillage of soil compared to a multiplough (M), a subsoiler equipment (S) and the conventional tillage which is relied on disc plough (AD) and disk harrow (Ra). The experiment was established on a sandy loam soil in strips of 15 m width and 110 m long, without replications. It was found that SIB and M have a more working width, demand bigger pull force and less fuel consumption per hectare (ha) than AD and S; therefore, SIB and M are statistically different than AD and S. The working speed of SIB has direct repercussions on its operating performance (ha h-1); it was 33.8% higher than the performance of AD. About the quality and operation of the equipment, these did not produce temporary changes on the soil bulk density (Da), mean diameter of the aggregates (DG50), resistance to penetration (Rp) and gravimetric humidity (&#415;g); hence, these did not show statistical differences (p &#8804; 0.05) although, in average, Da in M was bigger than in AD, S, and SIB for all the sampled depths. Therefore, it is concluded that SIB represents a sustainable choice to primary tillage of soils and can be used instead of conventional tillage.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Labranza]]></kwd>
<kwd lng="es"><![CDATA[subsolador integral biomimético]]></kwd>
<kwd lng="es"><![CDATA[combustible]]></kwd>
<kwd lng="es"><![CDATA[rendimiento operativo]]></kwd>
<kwd lng="en"><![CDATA[Tillage]]></kwd>
<kwd lng="en"><![CDATA[biomimetic integral subsoiler]]></kwd>
<kwd lng="en"><![CDATA[fuel]]></kwd>
<kwd lng="en"><![CDATA[operating performance]]></kwd>
</kwd-group>
</article-meta>
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