<?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>2071-0054</journal-id>
<journal-title><![CDATA[Revista Ciencias Técnicas Agropecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cie Téc Agr]]></abbrev-journal-title>
<issn>2071-0054</issn>
<publisher>
<publisher-name><![CDATA[Universidad Agraria de La Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2071-00542024000200002</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Estimation of the dynamic variables of irrigation scheduling in common bean crop (Phaseolus vulgaris L.)]]></article-title>
<article-title xml:lang="es"><![CDATA[Estimación de las variables dinámicas de programación del riego en frijol común (Phaseolus vulgaris L.)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Masjuan]]></surname>
<given-names><![CDATA[Yarisbel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tornés-Olivera]]></surname>
<given-names><![CDATA[Norge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brown-Manrique]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero-Alega]]></surname>
<given-names><![CDATA[Arnaldo Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Granma Departamento de Producción Agrícola ]]></institution>
<addr-line><![CDATA[Bayamo Granma]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Ciego de Ávila &#8220;Máximo Gómez Báez&#8221; Centro de Estudios Hidrotécnicos ]]></institution>
<addr-line><![CDATA[ Ciego de Ávila]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>33</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2071-00542024000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2071-00542024000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2071-00542024000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The research was carried out between the months of November 2020 and March 2021 and aimed to estimate the crop coefficient, root depth and abatement factor, depending on thermal time. The research area belongs to the UBPC Grito de Yara, Granma, Cuba, which is located at 200 25' 02'' N Latitude and 760 53' 27'' O Longitude. The estimation of the crop coefficient, root growth and exhaustion fraction was carried out using curvilinear models as a function of degree days. The estimation of root growth in the bean crop, using the three models evaluated, depending on the degree days, is reliable and is a very useful indicator for irrigation programming, since it facilitates the timely estimation of the sheet of water from the depth of the root. Growing degree days explain the allowable depletion levels of soil water for bean cultivation; In this regard, it was confirmed that the curvilinear model is accurate, which allows irrigation management, using information on degree days, to avoid water stress.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La investigación se desarrolló entre los meses de noviembre de 2020 a marzo de 2021 y tuvo como objetivo estimar el coeficiente del cultivo, la profundidad radicular y el factor de abatimiento, en función del tiempo térmico. El área de la investigación pertenece a la UBPC Grito de Yara, Granma, Cuba, la cual se encuentra ubicada a los 200 25' 02'' de Latitud N y a los 760 53' 27'' de Longitud O. La estimación del coeficiente del cultivo, crecimiento radicular y fracción de agotamiento, se realizó mediante modelos curvilíneos en función de los grados día. La estimación del crecimiento radicular en el cultivo de frijol, mediante los tres modelos evaluados, en función de los grados día, es confiable y, es un indicador de suma utilidad para la programación del riego, ya que facilita la estimación oportuna de la lámina de agua a partir de la profundidad de la raíz. Los grados día de crecimiento explican los niveles de agotamiento permisibles de agua en el suelo para el cultivo de frijol; al respecto, se corroboró que el modelo curvilíneo es exacto, lo cual permite el manejo del riego, utilizando la información de los grados día, para evitar estrés hídrico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Degree Days]]></kwd>
<kwd lng="en"><![CDATA[Root]]></kwd>
<kwd lng="en"><![CDATA[Depletion Fraction]]></kwd>
<kwd lng="es"><![CDATA[grados día]]></kwd>
<kwd lng="es"><![CDATA[raíz]]></kwd>
<kwd lng="es"><![CDATA[fracción de agotamiento]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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