<?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>S0188-62662019000100186</article-id>
<article-id pub-id-type="doi">10.15174/au.2019.2202</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Productividad de variedades de alfalfa en el Valle de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Productivity of alfalfa varieties in the Valley of Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Santillán]]></surname>
<given-names><![CDATA[Paulino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado Peralta]]></surname>
<given-names><![CDATA[María de los Ángeles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas García]]></surname>
<given-names><![CDATA[Adelaido Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres Salado]]></surname>
<given-names><![CDATA[Nicolás]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera Pérez]]></surname>
<given-names><![CDATA[Jerónimo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bottini Luzardo]]></surname>
<given-names><![CDATA[María Benedicta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Wilson García]]></surname>
<given-names><![CDATA[Claudia Yanet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quero Carrillo]]></surname>
<given-names><![CDATA[Adrian Raymundo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Guerrero Facultad de Medicina Veterinaria y Zootecnia No. 2 ]]></institution>
<addr-line><![CDATA[Cuajinicuilapa Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[Montecillo ]]></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=S0188-62662019000100186&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662019000100186&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662019000100186&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La alfalfa es una de las leguminosas más importantes a nivel mundial y es la más utilizada en la alimentación de ganado lechero en México. El objetivo de la presente investigación consistió en analizar parámetros productivos de variedades de alfalfa comerciales con intervalos de corte definidos estacionalmente, en el Campo Experimental del Colegio de Postgraduados, Montecillo, Estado de México. Las variedades evaluadas fueron Aragón, Valenciana, Chipilo, Milenia y Oaxaca. Las variables evaluadas fueron: tasa de crecimiento, intercepción de luz, índice de área foliar y altura de planta. Milenia y Aragón, con 57 kg DM ha-1 d-1 y 40 kg MS ha-1 d-1, registraron la mayor y menor tasa de crecimiento, respectivamente. La variedad que mayor intercepción de luz registró fue Milenia, con un promedio de 84%. En las cinco variedades de alfalfa, existe una relación positiva entre intercepción de luz, tasa de crecimiento, índice de área foliar y altura de planta. Por sus cualidades de producción se recomienda utilizar la variedad Milenia en el Valle de México.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Alfalfa is one of the most important legumes worldwide and is the most used in the feeding of dairy cattle in Mexico. The objective of this research was to analyze productive parameters of commercial alfalfa varieties with cut-off intervals defined seasonally in Campo Experimental del Colegio de Postgraduados, Montecillo, Estado de México. The varieties evaluated were Aragón, Valenciana, Chipilo, Milenia, and Oaxaca. The variables evaluated were growth rate, light interception, leaf area index, and plant height. Milenia and Aragón, with 57 kg DM ha-1 d-1 and 40 kg DM ha-1 d-1, recorded the highest and lowest growth rate, respectively. The variety with the highest light interception was Milenia, with an average of 84%. In the five varieties of alfalfa, there is a positive relationship between light interception, growth rate, leaf area index, and plant height. Due to its production qualities, it is recommended to use the Milenia variety in the Valley of Mexico.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Medicago sativa]]></kwd>
<kwd lng="es"><![CDATA[tasa de crecimiento]]></kwd>
<kwd lng="es"><![CDATA[intercepción de luz]]></kwd>
<kwd lng="es"><![CDATA[índice de área foliar]]></kwd>
<kwd lng="en"><![CDATA[Medicago sativa]]></kwd>
<kwd lng="en"><![CDATA[growth rate]]></kwd>
<kwd lng="en"><![CDATA[radiation interception]]></kwd>
<kwd lng="en"><![CDATA[leaf area index]]></kwd>
</kwd-group>
</article-meta>
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