<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342020000900013</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v0i24.2354</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Componentes estructurales del pasto Chetumal a diferentes manejos de pastoreo]]></article-title>
<article-title xml:lang="en"><![CDATA[Structural components of Chetumal grass at different grazing management]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Hernández]]></surname>
<given-names><![CDATA[Aldenamar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chay-Canul]]></surname>
<given-names><![CDATA[Alfonso J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Lázaro]]></surname>
<given-names><![CDATA[Efraín de la]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Joaquín-Cansino]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas-Garcia]]></surname>
<given-names><![CDATA[Adelaido R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Vera]]></surname>
<given-names><![CDATA[Santiago]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Juárez Autónoma de Tabasco División Académica de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[La Huasteca Tabasco]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Tamaulipas Facultad de Ingeniería y Ciencias ]]></institution>
<addr-line><![CDATA[Ciudad Victoria Tamaulipas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Guerrero Unidad Académica de Medicina Veterinaria y Zootecnia núm. 2 ]]></institution>
<addr-line><![CDATA[Cuajinicuilapa Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>05</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>05</month>
<year>2020</year>
</pub-date>
<volume>11</volume>
<numero>spe24</numero>
<fpage>13</fpage>
<lpage>22</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342020000900013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342020000900013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342020000900013&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo fue estudiar el efecto de las diferentes frecuencias e intensidades de pastoreo en los componentes estructurales de una pradera de Brachiaria humidicola. Las frecuencias de cortes fueron a los 21 y 28 d y las intensidades de 9-11 y 13-15 cm de altura. Las variables se analizaron en un diseño de bloques al azar con arreglo factorial 2 x 2. Se determinó acumulación del forraje, dinámica de tallos y tasa de crecimiento foliar. En la época de lluvias se concentró 67 y 64% de la producción forrajera anual, al pastorear a 21 y 28 d, respectivamente. La densidad de tallos durante la época de lluvias fue 11% mayor en el primer ciclo, 11 y 20% en nortes de ambos ciclos al pastorear cada 21 día. La tasa de aparición de tallos en la época de lluvias disminuyó 21% al ampliar el intervalo entre pastoreo de 21 a 28 días, respectivamente. La mayor acumulación del forraje, recambio de tejido foliar y peso por tallo, se obtuvo al pastorear a una intensidad ligera de 13-15 cm de altura cada 28 días.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective was to study the effect of different grazing frequencies and intensities on the structural components of a Brachiaria humidicola grassland. The cutoff frequencies were at 21 and 28 d and the intensities were 9-11 and 13-15 cm high. Variables were analyzed in a randomized block design with a 2 x 2 factorial arrangement. Forage accumulation, stem dynamics and leaf growth rate were determined. In the rainy season 67 and 64% of the annual forage production were concentrated, grazing on 21 and 28 d, respectively. Stem density during the rainy season was 11% higher in the first cycle, 11 and 20% in the north of both cycles when grazing every 21 days. The rate of appearance of stems in the rainy season decreased 21% by expanding the interval between grazing from 21 to 28 days, respectively. The greatest forage accumulation, leaf tissue turnover and weight per stem, was obtained by grazing at a light intensity of 13-15 cm in height every 28 days.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[acumulación del forraje]]></kwd>
<kwd lng="es"><![CDATA[frecuencias]]></kwd>
<kwd lng="es"><![CDATA[intensidades de pastoreo]]></kwd>
<kwd lng="en"><![CDATA[forage accumulation]]></kwd>
<kwd lng="en"><![CDATA[frequencies]]></kwd>
<kwd lng="en"><![CDATA[grazing intensities]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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