<?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>0258-5936</journal-id>
<journal-title><![CDATA[Cultivos Tropicales]]></journal-title>
<abbrev-journal-title><![CDATA[cultrop]]></abbrev-journal-title>
<issn>0258-5936</issn>
<publisher>
<publisher-name><![CDATA[Ediciones INCA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0258-59362021000300003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio de la asociación Gluconacetobacter diazotrophicus-viandas tropicales. Efecto sobre el rendimiento en condiciones de extensión]]></article-title>
<article-title xml:lang="en"><![CDATA[Study of the association Gluconacetobacter diazotrophicus-tropical tubers and roots. Effect on performance under extension conditions]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dibut-Álvarez]]></surname>
<given-names><![CDATA[Bernardo Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortega-García]]></surname>
<given-names><![CDATA[Marisel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ríos-Rocafull]]></surname>
<given-names><![CDATA[Yoania]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Investigaciones Fundamentales en Agricultura Tropical &#8220;Alejandro de Humboldt&#8221; (INIFAT)  ]]></institution>
<addr-line><![CDATA[Santiago de Las Vegas La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>42</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0258-59362021000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0258-59362021000300003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0258-59362021000300003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Con el objetivo de evaluar el efecto de la aplicación de G. diazotrophicus en el rendimiento de viandas tropicales, en condiciones de extensión, se inoculó la cepa INIFAT Abn-1 del microorganismo en boniato, yuca y malanga, durante dos campañas de producción. Al finalizar el ciclo de los cultivos en las plantas de boniato inoculadas se incrementaron los indicadores de crecimiento entre 30 y 60 %, con un rendimiento de 13 t ha-1 más en las parcelas aplicadas en relación a los controles. En el caso de la yuca los indicadores del crecimiento aumentaron con la aplicación del microorganismo entre 36-48 % y el rendimiento en un 40 %, con la obtención de 17 t ha-1 más en las parcelas aplicadas; mientras que para la malanga, los indicadores del crecimiento aumentaron entre 58 y 94 % en las parcelas inoculadas y el rendimiento se incrementó un 40 y 58 % en cada campaña, respectivamente. La concentración de G. diazotrophicus en las hojas de los tres cultivos osciló entre 103 y 107 UFC por gramo de tejido fresco y fue entre dos y cuatro órdenes menor en las plantas controles que en las inoculadas. El trabajo demostró el efecto estimulador del crecimiento de G. diazotrophicus en boniato, yuca y malanga en condiciones de producción, la necesidad de inocular el microorganismo para incrementar su población autóctona en estos cultivos, así como las posibilidades de uso de la bacteria endófita en el manejo agronómico de estas especies vegetales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In order to evaluate the effect of G. diazotrophicus application on the yield of tropical tubers and roots, under extension conditions, the INIFAT Abn-1 strain of the microorganism was inoculated in sweet potato, cassava and taro, during two production campaigns. At the end of the crop cycle in the inoculated sweet potato plants, the growth indicators increased between 30 and 60 %, with a yield of 13 t ha-1 more in the plots applied in relation to controls. In the case of cassava, the growth indicators increased with the application of microorganism between 36-48 % and the yield by 40 %, with the obtaining of 17 t ha-1 more in applied plots; while for taro, the growth indicators increased between 58 and 94 % in the inoculated plots and the yield increased by 40 and 58 % in each campaign, respectively. The concentration of G. diazotrophicus in leaves of the three cultures ranged between 103 and 107 CFU per gram of fresh tissue and it was between two and four orders lower in the control plants than in the inoculated ones. The work demonstrated the growth stimulating effect of G. diazotrophicus in sweet potato, cassava and taro under production conditions, the need to inoculate the microorganism to increase its autochthonous population in these crops, as well as the possibilities of using the endophytic bacteria in the agronomic management of these plant species.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[boniato]]></kwd>
<kwd lng="es"><![CDATA[biofertilización]]></kwd>
<kwd lng="es"><![CDATA[malanga]]></kwd>
<kwd lng="es"><![CDATA[yuca]]></kwd>
<kwd lng="en"><![CDATA[sweet potato]]></kwd>
<kwd lng="en"><![CDATA[biofertilization]]></kwd>
<kwd lng="en"><![CDATA[taro]]></kwd>
<kwd lng="en"><![CDATA[cassava]]></kwd>
</kwd-group>
</article-meta>
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