<?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>0253-5785</journal-id>
<journal-title><![CDATA[Centro Agrícola]]></journal-title>
<abbrev-journal-title><![CDATA[Ctro. Agr.]]></abbrev-journal-title>
<issn>0253-5785</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo, Universidad Central de Las Villas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0253-57852020000200075</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Extractos de Pimenta dioica, Callistemon citrinus y Syzygium malaccense sobre Sitophilus oryzae]]></article-title>
<article-title xml:lang="en"><![CDATA[Extracts of Pimenta dioica, Callistemon citrinus and Syzygium malaccense on Sitophilus oryzae]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Rodríguez]]></surname>
<given-names><![CDATA[Yhosvanni]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés Herrera]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerra de León]]></surname>
<given-names><![CDATA[José Orestes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Madruga Suarez]]></surname>
<given-names><![CDATA[Michael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castellanos González]]></surname>
<given-names><![CDATA[Leónides]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Cienfuegos &#8220;Carlos Rafael Rodríguez&#8221; Facultad de Ciencias Agrarias Centro de Estudios para la Transformación Agraria Sostenible (CETAS)]]></institution>
<addr-line><![CDATA[Cienfuegos ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Centro de Investigaciones Agropecuarias ]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad Química y Farmacia ]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Pamplona Facultad de Ciencias Agrarias ]]></institution>
<addr-line><![CDATA[ Municipio de Pamplona]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>47</volume>
<numero>2</numero>
<fpage>75</fpage>
<lpage>83</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0253-57852020000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0253-57852020000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0253-57852020000200075&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Son varios los productos que han sido utilizados para el control de Sitophilus oryzae L.; sin embargo, la alta resistencia del insecto a diversos productos químicos ha motivado la búsqueda de nuevas alternativas para su control, lo que motivó a evaluar el efecto in vitro de los extractos de Pimenta dioica (L.) Merr, Callistemon citrinus (Curtis) Skeels y Syzygium malaccense (L.) Merr. &amp;L.M. Perry sobre S. oryzae. El material vegetal fue molinado en partículas menores de 1 mm. El polvo obtenido fue utilizado para la obtención de extractos a través de tres métodos de extracción (Soxhlet, extracción asistida con Ultrasonido y Maceración), con solventes n-hexano, acetato de etilo y metanol. Se determinó el rendimiento de los extractos y fue evaluada la acción biológica sobre S. oryzae mediante el porcentaje de mortalidad emergencia del insecto y pérdida de peso. Los extractos conformados por Soxhlet, n-hexano fueron más efectivos en el control in vitro de S. oryzae, pero todos los extractos mostraron alta repelencia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT There are several products that have been used for the control of Sitophilus oryzae L. However, the high resistance of the insect to various chemical products has motivated the search for new alternatives for its control, which led to evaluating the in vitro effect of the extracts from Pimenta dioica (L.) Merr, Callistemon citrinus (Curtis) Skeels and Syzygium malaccense (L.) Merr. &amp; L.M. Perry on S. oryzae. The plant material was ground into particles smaller than 1 mm. The powder obtained was used to obtain extracts through three extraction methods (Soxhlet, assisted extraction with Ultrasound and Maceration), with n-hexane, ethyl acetate and methanol solvents. The yield of the extracts was determined and the biological action on S. oryzae was evaluated by means of the percentage of insect emergency mortality and weight loss. The extracts formed by Soxhlet and n-hexane were more effective in vitro on S. oryzae, but all showed high repellency.]]></p></abstract>
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<kwd lng="es"><![CDATA[gorgojos]]></kwd>
<kwd lng="es"><![CDATA[granos almacenados]]></kwd>
<kwd lng="en"><![CDATA[phyto-pesticides]]></kwd>
<kwd lng="en"><![CDATA[weevils]]></kwd>
<kwd lng="en"><![CDATA[stored grains]]></kwd>
</kwd-group>
</article-meta>
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