<?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>0123-4226</journal-id>
<journal-title><![CDATA[Revista U.D.C.A Actualidad & Divulgación Científica]]></journal-title>
<abbrev-journal-title><![CDATA[rev.udcaactual.divulg.cient.]]></abbrev-journal-title>
<issn>0123-4226</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Aplicadas y Ambientales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-42262021000200004</article-id>
<article-id pub-id-type="doi">10.31910/rudca.v24.n2.2021.1818</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Effect of organic fertilization and pruning on cacao yield in Cundinamarca, Colombia]]></article-title>
<article-title xml:lang="es"><![CDATA[Efecto de la fertilización orgánica y la poda sobre la producción de cacao en Cundinamarca, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega]]></surname>
<given-names><![CDATA[Camilo Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Bazurto]]></surname>
<given-names><![CDATA[Jaime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrientos-Fuentes]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Magnitskiy]]></surname>
<given-names><![CDATA[Stanislav]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Balaguera-López]]></surname>
<given-names><![CDATA[Helber Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias Grupo de Investigación Horticultura]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias Grupo de Investigación Horticultura]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ciencias Agrarias Grupo de Investigación Horticultura]]></institution>
<addr-line><![CDATA[Bogotá, D.C. ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>24</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-42262021000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-42262021000200004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-42262021000200004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Cacao has high social importance in Colombia but requires cultivation techniques that improve its productivity, especially in the production of organic cacao. Pruning and organic fertilizers were assessed as treatments to increase the bean yield in an old cacao crop in Cundinamarca. The positive effects of organic fertilizer application and pruning on the pod morphometry and bean yield were established. The application of organic fertilizers with pruning, in general, increased the length and circumference of cacao pods. A negative correlation (R=-0.618) was found among the relative chlorophyll contents in leaves at the end of the harvest period and with the number of pods per tree. A positive correlation (R=0.748) was obtained between the fresh weight of pods and the dry weight of beans. No correlation was established between the relative chlorophyll contents in leaves and the bean dry weight. Pruning plus organic fertilization increased the total dry weight of beans per tree at almost 15 %, which makes pruning with organic fertilizer application the best tool for increasing yield in organic cacao production in old plantations in Cundinamarca.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El cultivo de cacao tiene una alta importancia social en Colombia, pero requiere la implementación de técnicas de cultivo que mejoren su productividad, principalmente, en la producción de cacao orgánico. La poda y los fertilizantes orgánicos fueron evaluados, como los tratamientos para incrementar el rendimiento de cacao, en una plantación antigua en el departamento Cundinamarca. La aplicación de fertilizantes orgánicos y la poda tuvieron efectos positivos sobre la morfometría del fruto y el rendimiento del cacao. La aplicación de fertilizantes orgánicos con poda, en general, aumentó la longitud y el diámetro de frutos de cacao. Se encontró una correlación negativa (R=-0,618) entre el contenido relativo de clorofila en hojas al final del período de cosecha y el número de frutos por árbol. Se obtuvo una correlación positiva (R=0,748) entre el peso fresco de frutos y el peso seco de semillas. No se estableció correlación entre el contenido relativo de clorofila en hojas y el peso seco de semillas. La poda más fertilización orgánica aumentó el peso seco total de semillas por árbol, en casi un 15 %, lo que convierte la poda con aplicación de fertilizante orgánicos en una herramienta para aumentar el rendimiento de cacao orgánico en antiguas plantaciones, en el departamento Cundinamarca.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Branch elimination]]></kwd>
<kwd lng="en"><![CDATA[Chlorophylls]]></kwd>
<kwd lng="en"><![CDATA[Compost]]></kwd>
<kwd lng="en"><![CDATA[Perennial crops]]></kwd>
<kwd lng="en"><![CDATA[Theobroma cacao L]]></kwd>
<kwd lng="es"><![CDATA[Eliminación de ramas]]></kwd>
<kwd lng="es"><![CDATA[Clorofilas]]></kwd>
<kwd lng="es"><![CDATA[Compost]]></kwd>
<kwd lng="es"><![CDATA[Cultivos perennes]]></kwd>
<kwd lng="es"><![CDATA[Theobroma cacao L]]></kwd>
</kwd-group>
</article-meta>
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