<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282018000100143</article-id>
<article-id pub-id-type="doi">10.19136/era.a5nl3.1144</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Toxicidad de extractos de Carya illinoinensis (Fágales: Junglandaceae) contra Meloidogyne incógnita (Tylenchida: Heteroderidae) en tomate]]></article-title>
<article-title xml:lang="en"><![CDATA[Toxicity of Carya illinoinensis (Fágales: Junglandaceae) extracts against Meloidogyne incógnita (Tylenchida: Heteroderidae) in tomato]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cepeda-Siller]]></surname>
<given-names><![CDATA[Melchor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Calvario]]></surname>
<given-names><![CDATA[José Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Juárez]]></surname>
<given-names><![CDATA[Agustín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-Fuentes]]></surname>
<given-names><![CDATA[Yisa María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garrido-Cruz]]></surname>
<given-names><![CDATA[Fabiola]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cerna-Chávez]]></surname>
<given-names><![CDATA[Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dávila-Medina]]></surname>
<given-names><![CDATA[Miriam Desireé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Departamento de Parasitología ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,aff2  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<volume>5</volume>
<numero>13</numero>
<fpage>143</fpage>
<lpage>148</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282018000100143&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282018000100143&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282018000100143&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN. Meloidogyne incógnita es importante en el cultivo de tomate, por su capacidad para reducir el rendimiento y la calidad del fruto. El objetivo fue evaluar la actividad tóxica de extractos de cáscara y ruezno de nogal pecanero (Carya illinoinensis), sobre el nematodo agallador (M. incógnita) en plantas de tomate en invernadero. Se evaluaron los extractos vegetales de ruezno y cáscara de nogal pecanero en siete tratamientos con cuatro repeticiones bajo un diseño en bloques completos al azar, mediante la valoración de la densidad de población de juveniles de segunda generación, y se determinó la eficiencia de los tratamientos. Se encontró efecto de la aplicación de los extractos de nogal sobre M. incógnita; sobresaliendo los extractos de ruezno acuoso con 99 y 97% de reducción de la población en concentraciones 1:50 y 1:75; seguido del extracto de ruezno etanólico con 87% en la concentración 1:50 y 71% en la concentración 1:75.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT. Meloidogyne incógnita is important in tomato cultivation because of its ability to reduce fruit yield and quality. The objective was to evalúate the toxic activity of extracts from the pecan (Carya illinoinensis) nut shell and husk on the southern root-knot nematode (M. incógnita) in greenhouse-grown tomato plants. Plant extracts of pecan nut husk and shell were evaluated in seven treatments with four replications under a randomized complete block design, by assessing the population density of second-generation juveniles, and the efficiency of the treatments was determined. Applying pecan nut extracts on M. incógnita was found to have an effect, highlighted by the aqueous shell extracts with a 99 and 97% M. incógnita population reduction at concentrations of 1:50 and 1:75, followed by the ethanol husk extract with 87% at the 1:50 concentration and 71% at the 1:75 concentration.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Control]]></kwd>
<kwd lng="es"><![CDATA[extractos vegetales]]></kwd>
<kwd lng="es"><![CDATA[nematodo agallador]]></kwd>
<kwd lng="es"><![CDATA[nogal pecanero]]></kwd>
<kwd lng="es"><![CDATA[Solanum lycopersicum]]></kwd>
<kwd lng="en"><![CDATA[Control]]></kwd>
<kwd lng="en"><![CDATA[plant extracts]]></kwd>
<kwd lng="en"><![CDATA[southern root-knot nematode]]></kwd>
<kwd lng="en"><![CDATA[pecan nut]]></kwd>
<kwd lng="en"><![CDATA[Solanum lycopersicum]]></kwd>
</kwd-group>
</article-meta>
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