<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792011000400379</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Ventilación natural y forzada de invernaderos tipo Almería y su relación con el rendimiento de tomate]]></article-title>
<article-title xml:lang="en"><![CDATA[Natural and Forced Ventilation in Almeria-Type Greenhouse and its Relationship to Tomato Yield]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arellano-García]]></surname>
<given-names><![CDATA[Marco A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valera-Martínez]]></surname>
<given-names><![CDATA[Diego L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urrestarazu-Gavilán]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quezada-Martín]]></surname>
<given-names><![CDATA[Ma. del Rosario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murguía-López]]></surname>
<given-names><![CDATA[Juan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zermeño-González]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigación en Química Aplicada  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Almería  ]]></institution>
<addr-line><![CDATA[Almería ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<volume>29</volume>
<numero>4</numero>
<fpage>379</fpage>
<lpage>386</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792011000400379&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792011000400379&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792011000400379&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El riesgo de transmisión de virus por insectos ha obligado a establecer mallas anti-áfidos en las entradas de la ventilación natural de los invernaderos. Sin embargo, esto ha provocado una disminución en la eficiencia del control de clima dentro del invernadero. La solución a esta disminución en la ventilación natural, fue la instalación de sistemas de ventilación forzada, para incrementar las renovaciones de aire o en su defecto igualarla a la condición anterior (sin mallas anti-áfidos). En este trabajo de investigación se compararon los sistemas de ventilación natural con los sistemas de ventilación forzada diseñados a 15 y 30 renovaciones de aire por hora. Los resultados indicaron que las renovaciones de aire estudiadas en los sistemas de ventilación forzada, no tuvieron cambios significativos en el control del microclima del interior del invernadero. El rendimiento de fruto no fue afectado por el sistema de ventilación forzada. Con base en los resultados obtenidos, es posible afirmar que el sistema de ventilación forzada con índices de diseño de 15 y 30 renovaciones de aire por hora tiene el mismo efecto que el sistema de ventilación natural en el rendimiento de tomate.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The virus transmission risk caused by insects, has forced to establish anti-aphids mesh in the entrances of the natural ventilation greenhouses. Nevertheless, this has brought a problem in the reduction of the efficiency of the greenhouse climate control. The Almeria greenhouses natural ventilation is one of the climate control tools more economical in this region. Its decrement will generate problems of diseases and a drop of crop yield and quality. The solution to the reduction of natural ventilation was the installation of forced exhaust fans, to increase the renovations of air or at least to equal the previous condition (without anti-aphids mesh). In this research, the natural and forced ventilation with 15 and 30 air renovations per hour were studied. The results of the study indicated that the air renovations studied in the forced ventilation did not make a significant change in the greenhouse control microclimate. It was found that the fruit yield was not affected by the forced ventilation. Therefore, the forced ventilation did not improve the greenhouses microclimate control.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[temperatura]]></kwd>
<kwd lng="es"><![CDATA[humedad relativa]]></kwd>
<kwd lng="es"><![CDATA[humedad absoluta]]></kwd>
<kwd lng="es"><![CDATA[DPV]]></kwd>
<kwd lng="es"><![CDATA[Solanum lycopersicon]]></kwd>
<kwd lng="en"><![CDATA[temperature]]></kwd>
<kwd lng="en"><![CDATA[relative humidity]]></kwd>
<kwd lng="en"><![CDATA[absolute humidity]]></kwd>
<kwd lng="en"><![CDATA[VPD]]></kwd>
<kwd lng="en"><![CDATA[Solanum lycopersicon]]></kwd>
</kwd-group>
</article-meta>
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